阅读说明：本技术 天线装置以及电器设备 (Antenna device and electric appliance ) 是由 高井均 滨边太一 今井计裕 于 2018-12-25 设计创作，主要内容包括：天线装置(10)具备：第一导体层(20)；配置为与第一导体层(20)相对的第二导体层(30)；配置为与第二导体层(30)相对的第三导体层(40),第一导体层(20)具有：供电元件(21)；接地的第一接地元件(22),与供电元件(21)在第一方向上相邻；无供电元件(23),沿着供电元件(21)以及第一接地元件(22)而被配置,与供电元件(21)以及第一接地元件(22)绝缘,第二导体层(30)具有：浮游元件(31),配置为与供电元件(21)相对,与第一导体层(20)绝缘；接地的第二接地元件(32),与第一接地元件(22)相对,与浮游元件(31)相邻,第三导体层(40)具有被接地的第三接地元件(41)。(An antenna device (10) is provided with: a first conductor layer (20); a second conductor layer (30) arranged opposite to the first conductor layer (20); a third conductor layer (40) arranged opposite to the second conductor layer (30), the first conductor layer (20) having: a power supply element (21); a grounded first grounding element (22) adjacent to the power feeding element (21) in the first direction; a passive element (23) which is arranged along the feed element (21) and the first ground element (22) and is insulated from the feed element (21) and the first ground element (22), wherein the second conductor layer (30) has: a floating element (31) which is arranged so as to face the power feeding element (21) and is insulated from the first conductor layer (20); and a second grounded element (32) which is grounded and faces the first grounded element (22) and is adjacent to the floating element (31), and the third conductor layer (40) has a third grounded element (41) which is grounded.)

1. An antenna device is provided with:

a first conductor layer;

a second conductor layer configured to be opposite to the first conductor layer;

a first dielectric layer disposed between the first conductor layer and the second conductor layer;

a third conductor layer configured to be opposite to the second conductor layer; and

a second dielectric layer disposed between the second conductor layer and the third conductor layer,

the first conductor layer has:

a power supply element to be supplied with power;

a first ground element that is disposed so as to be grounded and is adjacent to the feeding element in a first direction with a first gap therebetween; and

a non-feeding element disposed along the feeding element and the first ground element and insulated from the feeding element and the first ground element,

the second conductor layer has:

a floating element arranged to be opposed to the feeding element and the non-feeding element and insulated from the first conductor layer; and

a second grounded element disposed so as to be grounded, facing the first grounded element and the parasitic element, and adjacent to the floating element in the first direction with a second gap therebetween,

the third conductor layer has a third ground element that is disposed so as to be grounded and that faces the floating element and the second ground element.

2. The antenna device as claimed in claim 1,

the floating element and the second ground element have an asymmetrical shape with respect to the second gap.

3. The antenna device as claimed in claim 1 or 2,

at least a part of the first gap overlaps the second gap when the first conductor layer is viewed in a plan view.

4. The antenna device according to any of claims 1 to 3,

the second conductor layer further includes:

a first intermediate element, in the second gap, configured to be opposed to the non-power-supplying element and extending in a second direction intersecting the first direction; and

a second intermediate element that is disposed in the second gap at a position adjacent to the first intermediate element in the second direction with a third gap therebetween and extends in the second direction,

at least a part of the third gap is disposed at a position overlapping with at least one of the feeding element, the first ground element, and the first gap when the first conductor layer is viewed in a plan view.

5. The antenna device as claimed in claim 4,

the first intermediate element is connected to the second ground element at an end portion on a side remote from the third gap,

the second intermediate element is connected to the second ground element at an end portion on a side away from the third gap.

6. The antenna device as claimed in claim 4 or 5,

the second conductor layer further includes:

a third intermediate element between the first intermediate element and the buoyant element, configured to oppose the unpowered element, and extending in the second direction; and

a fourth intermediate element that is disposed at a position adjacent to the third intermediate element in the second direction with a fourth gap therebetween and extends in the second direction,

at least a part of the fourth gap is disposed at a position overlapping with at least one of the feeding element, the first ground element, and the first gap when the first conductor layer is viewed in a plan view.

7. The antenna device as claimed in claim 6,

the third intermediate element is connected to the buoyant element at an end portion on a side remote from the fourth gap,

the fourth intermediate element is connected to the buoyant element at an end portion on a side away from the fourth gap.

8. The antenna device as claimed in any of claims 1 to 7,

at least a part of the passive element overlaps the second gap when the first conductor layer is viewed in a plan view.

9. The antenna device of any one of claims 1 to 8,

the length of the passive element in the first direction is greater than the sum of the lengths of the passive element, the first gap, and the first ground element.

10. An electrical appliance provided with the antenna device according to any one of claims 1 to 9.

Technical Field

The present disclosure relates to an antenna device and an electric appliance including the antenna device.

Background

Patent documents 1 and 2 disclose antenna devices using an Artificial Magnetic Conductor (AMC).

(Prior art document)

(patent document)

Patent document 1: japanese patent laid-open publication No. 2015-70542

Patent document 2: japanese patent laid-open publication No. 2016-146558

Disclosure of Invention

The present disclosure provides an antenna device capable of improving directivity in a predetermined direction and isolation from other antennas.

An antenna device according to the present disclosure includes: a first conductor layer; a second conductor layer configured to be opposite to the first conductor layer; a first dielectric layer disposed between the first conductor layer and the second conductor layer; a third conductor layer configured to be opposite to the second conductor layer; and a second dielectric layer disposed between the second conductor layer and the third conductor layer, the first conductor layer having: a power supply element to be supplied with power; a first ground element that is disposed so as to be grounded and is adjacent to the feeding element in a first direction with a first gap therebetween; and a non-feeding element disposed along the feeding element and the first ground element and insulated from the feeding element and the first ground element, the second conductor layer including: a floating element arranged to be opposed to the feeding element and the non-feeding element and insulated from the first conductor layer; and a second ground element disposed so as to be grounded, facing the first ground element and the parasitic element, and being adjacent to the floating element in the first direction with a second gap therebetween, wherein the third conductor layer includes a third ground element disposed so as to be grounded, and facing the floating element and the second ground element.

The antenna device of the present disclosure can improve directivity in a predetermined direction and isolation from other antennas.

Drawings

Fig. 1 is a perspective view showing the structure of an antenna device according to embodiment 1.

Fig. 2 is a sectional view of the printed wiring board according to embodiment 1.

Fig. 3 is a plan view of the first conductor layer of the printed wiring board according to embodiment 1.

Fig. 4 is a plan view of the second conductor layer of the printed wiring board according to embodiment 1.

Fig. 5 is a plan view of a third conductor layer of the printed wiring board according to embodiment 1.

Fig. 6 is a graph showing the frequency dependence of the Voltage Standing Wave Ratio (VSWR) of the antenna device according to embodiment 1.

Fig. 7A is a plan view of the first conductor layer of the antenna device according to modification 1 of embodiment 1.

Fig. 7B is a plan view of the second conductor layer of the antenna device according to modification 1 of embodiment 1.

Fig. 7C is a plan view of the third conductor layer of the antenna device according to modification 1 of embodiment 1.

Fig. 8 is a plan view of the first conductor layer of the antenna device according to modification 2 of embodiment 1.

Fig. 9 is a plan view of a second conductor layer of the antenna device according to modification 3 of embodiment 1.

Fig. 10 is a plan view of a second conductor layer of the antenna device according to modification 4 of embodiment 1.

Fig. 11 is a plan view of a second conductor layer of the antenna device according to modification 5 of embodiment 1.

Fig. 12 is a plan view of a second conductor layer of the antenna device according to modification 6 of embodiment 1.

Fig. 13 is a plan view of a second conductor layer of the antenna device according to modification 7 of embodiment 1.

Fig. 14 is a plan view of a second conductor layer of the antenna device according to modification 8 of embodiment 1.

Fig. 15 is a plan view of a second conductor layer of the antenna device according to modification 9 of embodiment 1.

Fig. 16 is a plan view of a second conductor layer of the antenna device according to modification 10 of embodiment 1.

Fig. 17 is a plan view of a second conductor layer of the antenna device according to modification 11 of embodiment 1.

Fig. 18 is a plan view of a second conductor layer of the antenna device according to modification 12 of embodiment 1.

Fig. 19 is a plan view of a second conductor layer of the antenna device according to modification 13 of embodiment 1.

Fig. 20 is a plan view of a second conductor layer of the antenna device according to modification 14 of embodiment 1.

Fig. 21 is a rear view showing an arrangement example 1 in which the antenna device according to embodiment 1 is arranged in a television set.

Fig. 22 is a sectional view showing an arrangement example 1 in which the antenna device according to embodiment 1 is arranged in a television set.

Fig. 23 is a graph showing the measurement results of the horizontal plane radiation characteristics of the antenna device according to embodiment 1 alone.

Fig. 24 is a graph showing the measurement results of the horizontal plane radiation characteristics in a state where the antenna device according to embodiment 1 is placed in a television according to placement example 1.

Fig. 25 is a rear view showing an example of arrangement 2 in which the antenna device according to embodiment 1 is arranged in a television set.

Fig. 26 is a sectional view showing an arrangement example 2 in which the antenna device according to embodiment 1 is arranged in a television set.

Fig. 27 is a graph showing the measurement results of the horizontal plane radiation characteristics in a state where the antenna device according to embodiment 1 is placed on a television according to placement example 2.

Fig. 28 is a perspective view showing the structure of the antenna device according to embodiment 2.

Fig. 29 is a sectional view showing a configuration of an antenna device according to embodiment 2.

Fig. 30 is a rear view showing an example of the arrangement in which the antenna device according to embodiment 2 is arranged in a television set.

Fig. 31 is a sectional view showing an example of the arrangement of the antenna device according to embodiment 2 in a television set.

Fig. 32 is a perspective view showing the structure of the antenna device according to embodiment 3.

Fig. 33 is a sectional view showing a configuration of an antenna device according to embodiment 3.

Fig. 34 is a rear view showing an example of the arrangement of the antenna device according to embodiment 3 in a television set.

Fig. 35 is a sectional view showing an example of the arrangement of the antenna device according to embodiment 3 in a television set.

Detailed Description

(insight underlying the present disclosure)

First, the findings that form the basis of the present disclosure will be described.

In recent years, in addition to information devices such as personal computers, wireless terminals have been mounted on home appliances such as televisions in accordance with standards such as wireless lan (local Area network) and Bluetooth (registered trademark). When a wireless terminal is mounted on a television, the wireless terminal is generally disposed on the rear side (back side) in terms of appearance and design. On the other hand, wireless terminals based on the Bluetooth (registered trademark) standard often communicate with wireless devices used in front of a television, such as a remote controller and an earphone, and therefore, radiation of electromagnetic waves in front of the television is required. However, when the wireless terminal based on the Bluetooth (registered trademark) standard is installed behind the television as described above, electromagnetic waves radiated from the antenna of the wireless terminal are hindered by the housing of the television when the electromagnetic waves propagate to the front of the television. Further, when a wireless terminal based on the standard of a wireless LAN driven in a 2.4GHz band and a wireless terminal based on the standard of Bluetooth (registered trademark) are mounted on a television set and used simultaneously, the two wireless terminals interfere with each other internally, which is a problem. From this viewpoint, since electromagnetic waves propagate from one wireless terminal to the other wireless terminal in the two wireless terminals disposed behind the television, there is a possibility that the internal mutual interference between the two wireless terminals increases, which is disadvantageous.

As described above, it is desired that the radio terminal suppress mutual interference inside while securing radiation of electromagnetic waves in front while suppressing damage to the external design of a television set or the like.

As a small and thin antenna capable of suppressing damage to the external shape of a television set or the like, antennas described in patent document 1 and patent document 2 are known. However, a technique for suppressing electromagnetic waves propagating through a space between antennas of two wireless terminals is not known.

The present disclosure is made based on the above-described findings, and provides an antenna capable of improving directivity in a predetermined direction and isolation from other antennas.

Hereinafter, the embodiments will be described in detail with reference to the accompanying drawings as appropriate. However, the above detailed description may be omitted. For example, detailed descriptions of well-known matters and repetitive descriptions having substantially the same configuration are omitted. This is to avoid unnecessary redundancy in the following description, which will be readily understood by those skilled in the art.

In addition, the inventors provide the drawings and the following description in order to fully understand the present disclosure for those skilled in the art, and do not limit the subject matter of the technical solution.

(embodiment mode 1)

The antenna device 10 according to embodiment 1 is explained.

[1-1. constitution of antenna device ]

First, the configuration of the antenna device 10 according to the present embodiment will be described with reference to fig. 1. Fig. 1 is a perspective view showing the structure of an antenna device 10 according to the present embodiment. The antenna device 10 is a device that transmits and receives electromagnetic waves modulated based on signals. In the present embodiment, the antenna device 10 is based on the Bluetooth (registered trademark) standard, and transmits and receives electromagnetic waves in the 2.4GHz band.

As shown in fig. 1, the antenna device 10 includes a printed wiring board 11 and a coaxial cable 90.

The coaxial cable 90 is a cable that guides electromagnetic waves. One end of the coaxial cable 90 is connected to the printed wiring board 11, and the other end is connected to another device. A coaxial connector 91 is provided at the other end of the coaxial cable 90.

The printed wiring board 11 is a substrate having a conductor constituting an antenna. The detailed structure of the printed wiring board 11 will be described with reference to fig. 2 to 5. Fig. 2 is a sectional view of the printed wiring board 11 according to the present embodiment. Fig. 2 shows a cross section of the printed wiring substrate 11 along the line II-II shown in fig. 1. Fig. 3, 4, and 5 are plan views of the first conductor layer 20, the second conductor layer 30, and the third conductor layer 40, respectively, of the printed wiring board 11 according to the present embodiment. In addition, in fig. 3, a first dielectric layer 61 is also shown together with the first conductor layer 20.

As shown in fig. 2, the printed wiring board 11 includes a first conductor layer 20, a second conductor layer 30, a first dielectric layer 61, a third conductor layer 40, a second dielectric layer 62, a first via electrode 51, and a second via electrode 52.

As shown in fig. 3, the first conductor layer 20 includes a feeding element 21, a first grounding element 22, and a non-feeding element 23. In the present embodiment, the first conductor layer 20 is a conductor film formed of a metal foil such as a copper foil.

The feed element 21 is an antenna conductor to which power is fed via the coaxial cable 90, the first via electrode 51, and the like. In the present embodiment, the feeding element 21 is an elongated conductor extending in a first direction, which is a longitudinal direction of the printed wiring substrate 11. An end portion of the feeding element 21 close to the first ground element 22 (in other words, an end portion close to the first gap 24 described later) is connected to the first through hole electrode 51.

The first ground element 22 is a conductor arranged to be grounded, and is adjacent to the feeding element 21 in the first direction with a first gap 24 therebetween. In the present embodiment, the first ground element 22 is an elongated conductor extending in a first direction. The first ground element 22 is grounded via the second via electrode 52. The end of the first ground element 22 close to the feeding element 21, in other words, the end close to the first gap 24, is connected to the second via electrode 52.

The passive element 23 is a conductor that is disposed along the feed element 21 and the first ground element 22 and is insulated from the feed element 21 and the first ground element 22. In the present embodiment, the passive element 23 is an elongated conductor extending in the first direction along the feed element 21 and the first ground element 22. As shown in fig. 2 and 3, the passive element 23 extends in the first direction from the end of the feed element 21 on the side away from the first gap 24 to the end of the first ground element 22 on the side away from the first gap 24. The non-feeding element 23 may protrude further than an end of the feeding element 21 on a side farther from the first gap 24 in the first direction. Further, the non-feeding element 23 may protrude further than an end portion of the first ground element 22 on a side farther from the first gap 24 in the first direction.

The second conductor layer 30 is a conductor layer disposed opposite to the first conductor layer 20, and functions as AMC. As shown in fig. 4, the second conductor layer 30 includes a floating element 31, a second ground element 32, a first intermediate element 33, and a second intermediate element 34. In the present embodiment, the second conductor layer 30 is a conductor film formed of a metal foil such as a copper foil.

The floating element 31 is a conductor insulated from the first conductor layer 20 and disposed to face the feeding element 21 and the parasitic element 23. In the present embodiment, the floating element 31 is an elongated conductor extending in the first direction. The floating element 31 is penetrated by the first through-hole electrode 51. An opening 31a is formed in a portion of the floating element 31 through which the first through-hole electrode 51 penetrates.

The second grounding element 32 is a conductor disposed so as to be grounded, and is opposed to the first grounding element 22 and the parasitic element 23, and is adjacent to the floating element 31 in the first direction with the second gap 37 therebetween. In the present embodiment, the second ground element 32 is an elongated conductor that is grounded via the second via electrode 52 and extends in the first direction. The floating member 31 and the second grounded member 32 have asymmetrical shapes with respect to the second gap 37. In addition, at least a part of the first gap 24 overlaps the second gap 37 when the first conductor layer 20 is viewed in a plan view.

The first intermediate element 33 is a conductor that is arranged in the second gap 37 so as to oppose the passive element 23 of the first conductor layer 20 and extends in a second direction that intersects the first direction. The first intermediate element 33 is disposed at a position adjacent to the second ground element 32 in the first direction with a first intermediate gap 35 therebetween. The first intermediate element 33 is insulated from the floating element 31. The first intermediate element 33 may be insulated from the second ground element 32.

The second intermediate element 34 is a conductor extending in the second direction and disposed in a position adjacent to the first intermediate element 33 in the second direction with the third gap 38 therebetween in the second gap 37. The second intermediate element 34 is disposed at a position adjacent to the second ground element 32 in the first direction with a second intermediate gap 36 therebetween. The second intermediate element 34 is insulated from the floating element 31. The second intermediate element 34 may also be insulated from the second ground element 32. In addition, when the first conductor layer 20 is viewed in a plan view, at least a part of the third gap 38 is disposed at a position overlapping with at least one of the feeding element 21, the first ground element 22, and the first gap 24 (see fig. 2 to 4).

The third conductor layer 40 is a conductor layer disposed opposite to the second conductor layer 30. As shown in fig. 5, the third conductor layer 40 includes a third ground element 41 and a pad electrode 42. In the present embodiment, the third conductor layer 40 is a conductor film formed of a metal foil such as a copper foil.

The third ground element 41 is a conductor disposed so as to be grounded, and faces the second conductor layer 30. The third ground element 41 is disposed to face the floating element 31, the second ground element 32, the first intermediate element 33, and the second intermediate element 34. The third ground element 41 is connected to the second via electrode 52. An opening 41a is formed in the third ground element 41, and a pad electrode 42 is disposed in the opening 41 a. The third grounding element 41 is connected to the outer conductor of the coaxial cable 90.

The pad electrode 42 is an electrode that is disposed in the opening 41a formed in the third ground element 41 and insulated from the third ground element 41. The pad electrode 42 is connected to the first via electrode 51. The pad electrode 42 is connected to the inner conductor of the coaxial cable 90.

As shown in fig. 2, the first dielectric layer 61 is a dielectric layer disposed between the first conductor layer 20 and the second conductor layer 30. The first dielectric layer 61 is formed of a dielectric material such as glass epoxy. The first dielectric layer 61 is formed with a through hole through which the first via electrode 51 and the second via electrode 52 penetrate. In the present embodiment, the first dielectric layer 61 has an elongated substantially rectangular shape extending in the first direction. As shown in fig. 3, the entire first conductor layer 20 is disposed on one main surface of the first dielectric layer 61. The entire second conductor layer 30 is disposed on the other main surface of the first dielectric layer 61. Further, a protective film covering the first conductor layer 20 may be disposed on the main surface of the first dielectric layer 61 on the first conductor layer 20 side.

As shown in fig. 2, the second dielectric layer 62 is a dielectric layer disposed between the second conductor layer 30 and the third conductor layer 40. The second dielectric layer 62 is formed of a dielectric material such as glass epoxy. The second dielectric layer 62 is formed with a through hole through which the first via electrode 51 and the second via electrode 52 pass. In this embodiment, the second dielectric layer 62 has an elongated substantially rectangular shape extending in the first direction, as in the first dielectric layer 61. The entire second conductor layer 30 is disposed on one main surface of the second dielectric layer 62. The entire third conductor layer 40 is disposed on the other main surface of the second dielectric layer 62. Further, a protective film covering the third conductor layer 40 may be disposed on the main surface of the second dielectric layer 62 on the third conductor layer 40 side. The second dielectric layer 62 may be integrated with the first dielectric layer 61. In the case where the third conductor layer 40 is covered with a protective film, the protective film may be removed from the pad electrode 42 and the portion of the third ground element 41 connected to the second via electrode 52. Accordingly, the third ground element 41 and the pad electrode 42 are connected to the outer conductor and the inner conductor of the coaxial cable 90, respectively.

As described above, the floating element 31 and the second ground element 32 have asymmetric shapes with respect to the second gap 37. Specifically, the length of the second ground element 32 in the first direction may be shorter than the length of the floating element 31. In this case, the length in the first direction of the portion of the third conductor layer 40 that faces the second ground element 32 can also be shortened. Similarly, the length of the portion of the first dielectric layer 61 and the second dielectric layer 62 facing the second ground element 32 in the first direction can be shortened. In this way, the length of the second ground element 32 in the first direction is made shorter than the length of the floating element 31 in the first direction, and the length of the entire antenna device in the first direction can be shortened. In other words, further miniaturization of the antenna device can be achieved. Therefore, the degree of freedom in installation of the antenna device can be improved. Also in such a configuration, the same effect can be obtained as in the case where the length of the second grounded element 32 in the first direction is approximately the same as the length of the floating element 31 in the first direction.

[1-2. frequency characteristics ]

The frequency characteristics of the antenna device 10 according to the present embodiment will be described with reference to fig. 6. Fig. 6 is a graph showing the frequency dependence of the Voltage Standing Wave Ratio (VSWR) of the antenna device 10 according to the present embodiment. Fig. 6 shows the frequency dependence determined by actual measurement.

As shown in fig. 6, it is understood that the antenna device 10 according to the present embodiment can achieve a VSWR of less than 2 in a 2.4GHz band (2.4GHz to 2.475 GHz) which is an assumed use band. As described above, the antenna device 10 according to the present embodiment can widen the usable frequency.

[1-3. modified examples ]

The configuration of the antenna device 10 according to the present embodiment is described above as an example, but the configuration of the antenna device according to the present embodiment is not limited to the above configuration example. A modification of the antenna device according to the present embodiment will be described below.

[1-3-1. modified example 1]

The following describes an antenna device according to modification 1 of the present embodiment. The antenna device according to the present modification is different from the antenna device 10 according to embodiment 1 mainly in the arrangement of the first conductor layer. The following description will focus on differences from the antenna device 10 according to embodiment 1, regarding the structure of the antenna device according to the present modification, with reference to fig. 7A to 7C.

Fig. 7A, 7B, and 7C are plan views of the first conductor layer 20A, the second conductor layer 30A, and the third conductor layer 40A, respectively, of the antenna device according to the present modification. In addition, a first dielectric layer 61 is also shown in fig. 7A together with the first conductor layer 20A. As shown in fig. 7A, the first conductor layer 20A of the antenna device according to the present modification includes a feed element 21, a first ground element 22, and a parasitic element 23, as in the first conductor layer 20 according to embodiment 1. The first conductor layer 20A according to the present modification example moves in the second direction on the first dielectric layer 61 as compared with the first conductor layer 20 according to embodiment 1. The first conductor layer 20A is moved to a position closer to the passive element 23 than the first conductor layer 20 according to embodiment 1, at the end of the first dielectric layer 61. Therefore, the positions of the first via electrode 51 and the second via electrode 52 in the second direction are also shifted in the second direction compared to the positions of the first via electrode 51 and the second via electrode 52 in the antenna device 10 according to embodiment 1.

The configurations of the second conductor layer 30A and the third conductor layer 40A are changed according to the position of the first conductor layer 20A. As shown in fig. 7B, the second conductor layer 30A includes, as in the second conductor layer 30 according to embodiment 1: a floating element 31A, a second grounding element 32A, a first intermediate element 33A, and a second intermediate element 34A. The first intermediate element 33A is disposed at a position adjacent to the second ground element 32A in the first direction with a first intermediate gap 35A interposed therebetween. The second intermediate element 34A is disposed at a position adjacent to the second ground element 32A in the first direction with a second intermediate gap 36A therebetween. The position of the third gap 38 between the first intermediate element 33A and the second intermediate element 34A is shifted in the second direction from the position of the third gap 38 in embodiment 1. The same applies to the position of the opening 31A in the floating element 31A.

Similarly to the third conductor layer 40 according to embodiment 1, the third conductor layer 40A shown in fig. 7C includes a third ground element 41A and a pad electrode 42. As shown in fig. 7C, the positions of the opening 41A of the third ground element 41A, the pad electrode 42, and the second via electrode 52 are shifted in the second direction from those in embodiment 1.

The antenna device according to the present modification also has the same effects as the antenna device 10 according to embodiment 1. The antenna device according to the present modification can increase the radiation intensity in the second direction as compared with the antenna device 10 according to embodiment 1.

[1-3-2. modified example 2]

The following describes an antenna device according to modification 2 of the present embodiment. The antenna device according to the present modification is different from the antenna device 10 according to embodiment 1 in the configuration of the first conductor layer. The following description focuses on differences from the antenna device 10 according to embodiment 1 with respect to the configuration of the antenna device according to the present modification, and is made with reference to fig. 8.

Fig. 8 is a plan view of the first conductor layer 20B of the antenna device according to the present modification. In fig. 8, the first dielectric layer 61 is also shown together with the first conductor layer 20B. As shown in fig. 8, the first conductor layer 20B includes a feeding element 21, a first ground element 22, and a non-feeding element 23B, as in the first conductor layer 20 according to embodiment 1. In the first conductor layer 20B according to the present modification, the length of the passive element 23B in the first direction is shorter than the passive element 23 according to embodiment 1. The antenna device including the first conductor layer 20B can obtain the same effects as those of the antenna device 10 according to embodiment 1.

[1-3-3. modified example 3]

The following describes an antenna device according to modification 3 of the present embodiment. The antenna device according to the present modification is different from the antenna device 10 according to embodiment 1 in the configuration of the second conductor layer. The following description focuses on differences from the antenna device 10 according to embodiment 1 with respect to the configuration of the antenna device according to the present modification, and is made with reference to fig. 9.

Fig. 9 is a plan view of the second conductor layer 30C of the antenna device according to the present modification. As shown in fig. 9, the second conductor layer 30C according to the present modification is different from the second conductor layer 30 according to embodiment 1 in that the first intermediate element 33 and the second intermediate element 34 are not provided. The antenna device including the second conductor layer 30C can also obtain the same effects as those of the antenna device 10 according to embodiment 1. However, in the antenna device 10 according to embodiment 1, the second conductor layer 30 includes the first intermediate element 33 and the second intermediate element 34, and the usable frequency can be made wider.

[1-3-4. modified example 4]

The following describes an antenna device according to modification 4 of the present embodiment. The antenna device according to the present modification is different from the antenna device 10 according to embodiment 1 in the configuration of the second conductor layer. Hereinafter, the configuration of the antenna device according to the present modification will be described with reference to fig. 10, focusing on differences from the antenna device 10 according to embodiment 1.

Fig. 10 is a plan view of the second conductor layer 30D of the antenna device according to the present modification. As shown in fig. 10, the second conductor layer 30D according to the present modification includes a floating element 31, a second ground element 32, a first intermediate element 33D, and a second intermediate element 34D.

The first intermediate element 33D is disposed at a position adjacent to the second ground element 32 in the first direction with the first intermediate gap 35D interposed therebetween. The first intermediate member 33D is connected to the second ground member 32 at an end portion on the side away from the third gap 38.

The second intermediate element 34D is disposed at a position adjacent to the second ground element 32 in the first direction with a second intermediate gap 36D therebetween. The second intermediate member 34D is connected to the second ground member 32 at the end on the side away from the third gap 38.

The antenna device including the second conductor layer 30D can also obtain the same effects as those of the antenna device 10 according to embodiment 1.

[1-3-5 ] modified example 5]

The following describes an antenna device according to modification 5 of the present embodiment. The antenna device according to the present modification is different from the antenna device 10 according to embodiment 1 in the configuration of the second conductor layer. The following description will focus on differences from the antenna device 10 according to embodiment 1 regarding the structure of the antenna device according to the present modification, with reference to fig. 11.

Fig. 11 is a plan view of the second conductor layer 130 of the antenna device according to the present modification. As shown in fig. 11, the second conductor layer 130 according to the present modification includes a floating element 131, a second ground element 132, a first intermediate element 33, and a second intermediate element 34. The second conductor layer 130 according to the present modification is different from the second conductor layer 30 according to embodiment 1 in the shapes of the floating element 131 and the second ground element 132.

The outer edge of the floating element 131 is substantially rectangular in shape as in the floating element 31 according to embodiment 1, but the inner region is cut out. More specifically, the floating element 131 includes a floating basal portion 1311, a first floating extension portion 1312, a second floating extension portion 1313, a floating tongue 1314, a first floating bending portion 1315, a second floating bending portion 1316, a first floating inward portion 1317, and a second floating inward portion 1318.

The floating stem 1311 is a portion extending in the second direction along the second gap 37 and serving as a stem of the floating element 131.

The first buoyant extension 1312 is an elongated portion extending in the first direction from one end of the buoyant base stem 1311. The first floating extension portion 1312 extends from an end of the floating base portion 1311 on the side close to the passive element 23 in a direction away from the second gap 37 (in the left direction in fig. 11).

The second floating extension 1313 is an elongated portion extending in the first direction from the other end of the floating base 1311. The second floating extension portion 1313 extends from the end of the floating base portion 1311 on the side closer to the feeding element 21 in a direction away from the second gap 37 (in the left direction in fig. 11). In the present embodiment, the second buoyant extension portion 1313 has a width (in other words, a dimension in the second direction) and a length (in other words, a dimension in the first direction) that are substantially the same as those of the first buoyant extension portion 1312.

The buoyant tongue 1314 is an elongated tongue extending in a first direction from the buoyant stem 1311. The floating tongue 1314 is disposed between the first floating extension 1312 and the second floating extension 1313 at a position facing the feeding element 21 of the first conductor layer 20. The width (in other words, the dimension in the second direction) of the floating tongue 1314 is, for example, equal to or greater than the width of the feeding element 21. In addition, the feed element 21 may be disposed in the region of the floating stem 1311 or the floating tongue 1314 when the first conductor layer 20 is viewed in plan. In this case, the sum of the dimension of the floating base portion 1311 in the first direction and the dimension of the floating tongue-shaped portion 1314 in the first direction is equal to or greater than the length of the feeding element 21 (in other words, the dimension in the first direction).

The first floating bent portion 1315 is an end portion of the first floating extending portion 1312 on the side far from the floating base portion 1311, and extends in the second direction. The first floating bent portion 1315 extends from the first floating extension portion 1312 in a direction approaching the second floating extension portion 1313.

The second floating bent portion 1316 is a portion extending in the second direction at an end of the second floating extension portion 1313 on the side away from the floating base portion 1311. The second floating bent portion 1316 extends from the second floating extension portion 1313 in a direction approaching the first floating extension portion 1312. In the present embodiment, the second floating curved portion 1316 has the same degree of width (in other words, dimension in the first direction) and the same degree of length (in other words, dimension in the second direction) as the first floating curved portion 1315.

The first floating inward portion 1317 is a portion extending in the first direction at an end of the first floating bending portion 1315 on the side farther from the first floating extension portion 1312. The first floating inward section 1317 extends from the first floating bending section 1315 in a direction approaching the floating basal section 1311.

The second floating inward portion 1318 is a portion extending in the first direction at an end of the second floating bending portion 1316 on a side away from the second floating extension 1313. The second floating inward portion 1318 extends from the second floating bent portion 1316 in a direction approaching the floating base portion 1311. In the present embodiment, the second floating inward portion 1318 has a width (in other words, a dimension in the second direction) and a length (in other words, a dimension in the first direction) of the same degree as those of the first floating inward portion 1317.

The outer edge of the second ground element 132 is shaped substantially in a rectangular shape as in the second ground element 32 according to embodiment 1, but the inner region is cut. More specifically, the second ground element 132 includes a ground stem 1321, a first ground extension 1322, a second ground extension 1323, a ground tongue 1324, a first ground bent 1325, a second ground bent 1326, a first ground inward portion 1327, and a second ground inward portion 1328.

The ground stem 1321 is a portion that becomes a stem of the second ground element 132, extending in the second direction along the second gap 37.

The first ground extension 1322 is an elongated portion extending in the first direction from one end of the ground stem 1321. First ground extension 1322 extends from an end of ground stem 1321 on the side closer to passive element 23 in a direction away from second gap 37 (in the right direction in fig. 11).

The second ground extension 1323 is an elongated portion extending in the first direction from the other end of the ground stem 1321. The second ground extension portion 1323 extends from the end portion of the ground stem 1321 on the side closer to the first ground element 22 in the direction away from the second gap 37 (in the right direction in fig. 11). In the present embodiment, the second ground bent portion 1323 has the same degree of width (in other words, a dimension in the second direction) and the same degree of length (in other words, a dimension in the first direction) as the first ground extension 1322.

The ground tongue 1324 is an elongated tongue extending in a first direction from the ground stem 1321. The ground tongue 1324 is disposed between the first ground extension 1322 and the second ground extension 1323 at a position facing the first ground element 22 of the first conductor layer 20. The width (in other words, the dimension in the second direction) of the grounding tongue 1324 is, for example, equal to or larger than the width of the first grounding element 22. In a plan view of the first conductor layer 20, the first ground element 22 may be disposed in the region of the ground stem 1321 or the ground tongue 1324. In this case, the sum of the dimension of the ground stem 1321 in the first direction and the dimension of the floating tongue 1324 in the first direction is equal to or greater than the length of the first ground element 22 (in other words, the dimension in the first direction).

The first ground bent portion 1325 is a portion of the first ground extension 1322 that extends in the second direction from the end portion of the ground stem 1321 on the far side. The first ground bent portion 1325 extends from the first ground extension 1322 in a direction approaching the second ground extension 1323.

The second ground bent portion 1326 is a portion extending in the second direction at an end portion of the second ground extending portion 1323 on the side farther from the ground base portion 1321. The second ground bent portion 1326 extends from the second ground extension portion 1323 in a direction approaching the first ground extension portion 1322. In the present embodiment, the second ground bent portion 1326 has the same degree of width (in other words, a dimension in the first direction) and the same degree of length (in other words, a dimension in the second direction) as the first ground bent portion 1325.

The first ground inward portion 1327 is a portion that extends in the first direction at an end portion of the first ground bent portion 1325 on the side farther from the first ground extension 1322. The first ground inward portion 1327 extends from the first ground bent portion 1325 in a direction approaching the ground trunk portion 1321.

The second ground inward portion 1328 is a portion that extends in the first direction at an end portion of the second ground bent portion 1326 on the side farther from the second ground extending portion 1323. The second ground inward portion 1328 extends from the second ground bent portion 1326 in a direction approaching the ground trunk portion 1321. In the present embodiment, the second ground inward portion 1328 has a width (in other words, a dimension in the second direction) of the same degree as the first ground inward portion 1327 and a length (in other words, a dimension in the first direction) of the same degree.

With the second conductor layer 130 having such a configuration, the floating element 131 and the second ground element 132 of the second conductor layer 130 according to the present modification can have an increased electrical length without increasing the size. For example, in the floating element 31 according to embodiment 1, the electrical length is the length of the floating element 31 in the first direction. On the other hand, in the floating element 131 according to the present modification, the electrical length can be the sum of the length of the floating tongue portion 1314, the length of the first floating extension portion 1312, the length of the first floating bending portion 1315, and the first floating inward portion 1317. In other words, the floating element 131 and the second ground element 132 according to the present modification have electrical lengths equal to or longer than the lengths of the respective elements themselves. Therefore, in the present modification, the size of the second conductor layer 130, particularly the size in the longitudinal direction (in other words, the first direction), can be reduced as compared with the second conductor layer 30 according to embodiment 1. For example, in the present modification, the floating element 131 and the second ground element 132 have respective dimensions of about 22mm and about 21.5mm in the first direction. Therefore, the printed wiring board of the antenna device can have a length of about 45mm and a width of about 9.5 mm.

With the antenna device according to the present modification, in addition to the same effects as those of the antenna device 10 according to embodiment 1, the antenna device can be further downsized as described above.

In the antenna device according to the present modification, as in the antenna devices according to the present embodiment and the modifications, the floating element 131 and the second ground element 132 have asymmetric shapes with respect to the second gap 37. Specifically, the second ground element 132 may be shorter than the length of the floating element 131 in the first direction. In this case, the length of the portion of the third conductor layer 40 that faces the second ground element 132 in the first direction can also be shortened. Similarly, the length of the portion of the first dielectric layer 61 and the second dielectric layer 62 facing the second ground element 132 in the first direction can be shortened. In this way, the length of the second ground element 132 in the first direction is made shorter than the length of the floating element 131 in the first direction, and the length of the entire antenna device in the first direction can be shortened. In other words, further miniaturization of the antenna device can be achieved. Therefore, the degree of freedom in installation of the antenna device can be improved. In such a configuration, the same effect as that of the configuration in which the length of the second ground element 132 in the first direction is the same as that of the floating element 131 can be obtained.

As a configuration for shortening the length of the second ground element 132 in the first direction, for example, the lengths of the first ground extension 1322 and the second ground extension 1323 may be shortened. Further, the first ground bent portion 1325, the second ground bent portion 1326, the first ground inward portion 1327, and the second ground inward portion 1328 may be shortened or eliminated. As a structure for obtaining such a characteristic that the length of the second grounding element 132 in the first direction is shortened to be substantially the same, a structure may be adopted in which the grounding tongue 1324 is shortened or removed.

[1-3-6 ] modified example 6]

The following describes an antenna device according to modification 6 of the present embodiment. The antenna device according to the present modification is different from the antenna device according to modification 5 in the configurations of the first intermediate element and the second intermediate element of the second conductor layer. Hereinafter, the configuration of the antenna device according to the present modification will be described with reference to fig. 12, focusing on differences from the antenna device according to modification 5.

Fig. 12 is a plan view of the second conductor layer 130D of the antenna device according to the present modification. As shown in fig. 12, the second conductor layer 130D according to the present modification includes a floating element 131, a second ground element 132, a first intermediate element 33D, and a second intermediate element 34D. The first intermediate element 33D and the second intermediate element 34D according to the present modification have the same configurations as the first intermediate element 33D and the second intermediate element 34D according to modification 4. In other words, the first intermediate element 33D is connected to the second grounding element 132 at the end on the side away from the third gap 38, and the second intermediate element 34D is connected to the second grounding element 132 at the end on the side away from the third gap 38.

The antenna device including the second conductor layer 130D can also obtain the same effects as those of the antenna device according to modification 5.

[1-3-7. modified example 7]

The following describes an antenna device according to modification 7 of the present embodiment. In the antenna device according to the present modification, the shapes of the floating element and the second ground element of the second conductor layer are different from those of the antenna device according to modification 5. Hereinafter, the configuration of the antenna device according to the present modification will be described with reference to fig. 13, focusing on differences from the antenna device according to modification 5.

Fig. 13 is a plan view of the second conductor layer 230 of the antenna device according to the present modification. As shown in fig. 13, the second conductor layer 230 of the antenna device according to the present modification includes: a floating element 231, a second grounded element 232, a first intermediate element 33, a second intermediate element 34. The second conductor layer 230 according to the present modification differs from the second conductor layer 130 according to modification 5 in the shapes of the floating element 231 and the second ground element 232.

The floating element 231 includes a floating base portion 2311, a first floating extension portion 2312, a second floating extension portion 2313, a floating tongue portion 2314, a first floating curved portion 2315, and a second floating curved portion 2316, similarly to the floating element 131 according to modification 5. On the other hand, the floating element 231 includes a first floating outward portion 2317 and a second floating outward portion 2318, which are different from the floating element 131 according to modification 5.

The floating basal portion 2311, the first floating extension portion 2312, the second floating extension portion 2313, the floating tongue portion 2314, the first floating bending portion 2315 and the second floating bending portion 2316 according to the present modification have the same configurations as the floating basal portion 1311, the first floating extension portion 1312, the second floating extension portion 1313, the floating tongue portion 1314, the first floating bending portion 1315 and the second floating bending portion 1316 according to modification 5, respectively.

The first buoyant outward section 2317 is a section extending in the first direction from the end of the first buoyant curved section 2315 on the side farther from the first buoyant extension 2312. The first floating outward portion 2317 extends outward from the first floating bent portion 2315, i.e., away from the floating basal portion 2311.

The second buoyant outward section 2318 is a section extending in the first direction from the end of the second buoyant curved section 2316 on the side farther from the second buoyant extension 2313. The second floating outward portion 2318 extends outward from the second floating bent portion 2316, i.e., away from the floating basal portion 2311. In the present embodiment, the second buoyant outward section 2318 has a width (in other words, a dimension in the second direction) and a length (in other words, a dimension in the first direction) that are approximately the same as those of the first buoyant outward section 2317.

The second ground element 232 includes a ground stem 2321, a first ground extension 2322, a second ground extension 2323, a ground tongue 2324, a first ground bent 2325, and a second ground bent 2326, as in the second ground element 132 according to modification 5. On the other hand, the second ground element 232 is different from the second ground element 132 according to modification 5 in that it includes a first ground outward-facing portion 2327 and a second ground outward-facing portion 2328.

The ground base 2321, the first ground extension 2322, the second ground extension 2323, the ground tongue 2324, the first ground flexure 2325 and the second ground flexure 2326 according to the present modification have the same configurations as the ground base 1321, the first ground extension 1322, the second ground extension 1323, the ground tongue 1324, the first ground flexure 1325 and the second ground flexure 1326 according to modification 5, respectively.

The first ground outward portion 2327 is a portion that extends in the first direction from the end of the first ground bent portion 2325 on the side away from the first ground extension 2322. The first ground outward portion 2327 extends from the first ground bent portion 2325 in an outward direction, i.e., away from the ground stem 2321.

The second ground outward portion 2328 is a portion of the second ground bend 2326 that extends in the first direction from the end of the second ground extension 2323 that is distal. The second ground outward portion 2328 extends from the second ground bent portion 2326 in an outward direction, i.e., away from the ground stem 2321. In the present embodiment, the second ground outward 2328 has a width (in other words, a dimension in the second direction) of the same extent as the first ground outward 2327, and a length (in other words, a dimension in the first direction) of the same extent.

The antenna device including the second conductor layer 230 can also obtain the same effects as those of the antenna device according to modification 5.

In the antenna device according to the present modification, as in the antenna devices according to the present embodiment and the modifications, the floating element 231 and the second ground element 232 have asymmetric shapes with respect to the second gap 37. Specifically, the second ground element 232 may be shorter than the length of the floating element 231 in the first direction. In this case, the length of the portion of the third conductor layer 40 that faces the second ground element 232 in the first direction can also be shortened. Similarly, the length of the portion of the first dielectric layer 61 and the second dielectric layer 62 facing the second ground element 232 in the first direction can be shortened. In this way, the length of the second ground element 232 in the first direction is made shorter than the length of the floating element 231 in the first direction, and the length of the entire antenna device in the first direction can be shortened. In other words, further miniaturization of the antenna device can be achieved. Therefore, the degree of freedom in installation of the antenna device can be improved. In such a configuration, the same effect as that of the configuration in which the length of the second grounding element 232 in the first direction is substantially equal to the length of the floating element 231 in the first direction can be obtained.

As a configuration for shortening the length of the second ground element 232 in the first direction, for example, the lengths of the first ground extension 2322 and the second ground extension 2323 may be shortened. The first ground bent portion 2325, the second ground bent portion 2326, the first ground outward portion 2327 and the second ground outward portion 2328 may be shortened or eliminated. As a configuration for obtaining substantially the same characteristics by shortening the length of the second ground element 232 in the first direction, shortening or removing the ground tongue 2324 may be employed.

[1-3-8. modified example 8]

The following describes an antenna device according to modification 8 of the present embodiment. The antenna device according to this modification differs from the antenna device according to modification 7 in the configuration of the first intermediate element and the second intermediate element of the second conductor layer. The following description will be given of the configuration of the antenna device according to the present modification, focusing on differences from the antenna device according to modification 7, with reference to fig. 14.

Fig. 14 is a plan view of the second conductor layer 230D of the antenna device according to the present modification. As shown in fig. 14, the second conductor layer 230D according to the present modification includes a floating element 231, a second ground element 232, a first intermediate element 33D, and a second intermediate element 34D. The first intermediate element 33D and the second intermediate element 34D according to the present modification have the same configurations as the first intermediate element 33D and the second intermediate element 34D according to modification 4. In other words, the first intermediate element 33D is connected to the second grounding element 232 at the end on the side away from the third gap 38, and the second intermediate element 34D is connected to the second grounding element 232 at the end on the side away from the third gap 38.

The antenna device including the second conductor layer 230D can also obtain the same effects as those of the antenna device according to modification 7.

[1-3-9. modified example 9]

The following describes an antenna device according to modification 9 of the present embodiment. The antenna device according to the present modification is different from the antenna device according to modification 5 in the configuration of the second conductor layer. The following description will be given of the configuration of the antenna device according to the present modification, focusing on differences from the antenna device according to modification 5, with reference to fig. 15.

Fig. 15 is a plan view of the second conductor layer 330 of the antenna device according to the present modification. As shown in fig. 15, the second conductor layer 330 according to the present modification includes the floating element 131, the second ground element 132, the first intermediate element 33, and the second intermediate element 34, similarly to the second conductor layer 130 according to modification 5. The second conductor layer 330 according to the present modification is different from the second conductor layer 130 according to modification 5 in that it further includes a third intermediate element 333 and a fourth intermediate element 334.

The third intermediate element 333 is a conductor that is disposed in the second gap 37 so as to face the passive element 23 of the first wire layer 20 and extends in the second direction. The third intermediate element 333 is disposed at a position adjacent to the floating element 131 in the first direction with the third intermediate gap 335 interposed therebetween. In other words, the third intermediate element 333 is disposed between the floating element 131 and the first intermediate element 33 along the first intermediate element 33. In the present embodiment, the third intermediate element 333 has a length and a width equal to those of the first intermediate element 33. The third intermediate element 333 is insulated from the second ground element 132. The third intermediate element 333 may be insulated from the floating element 131.

The fourth intermediate element 334 is a conductor that is disposed in the second gap 37 at a position adjacent to the third intermediate element 333 in the second direction with the fourth gap 338 therebetween and extends in the second direction. The fourth intermediate element 334 is disposed at a position adjacent to the floating element 131 in the first direction with the fourth intermediate gap 336 therebetween. In other words, the fourth intermediate element 334 is disposed between the floating element 131 and the second intermediate element 34 along the second intermediate element 34. In this embodiment, the fourth intermediate element 334 has a length and width equal to the second intermediate element 34. And a fourth intermediate member 334 insulated from the second ground member 132. The fourth intermediate element 334 may be insulated from the floating element 131. In addition, when the first conductor layer 20 is viewed in a plan view, at least a part of the fourth gap 338 is disposed at a position where at least one of the feeding element 21, the first ground element 22, and the first gap 24 overlaps (see fig. 3 and fig. 15).

The antenna device including the second conductor layer 330 can also obtain the same effects as those of the antenna device according to modification 5.

[1-3-10. modified example 10]

The following describes an antenna device according to modification 10 of the present embodiment. The antenna device according to the present modification is different from the antenna device according to modification 9 in the configurations of the first intermediate element, the second intermediate element, the third intermediate element, and the fourth intermediate element of the second conductor layer. The following description will be given of the configuration of the antenna device according to the present modification, focusing on differences from the antenna device according to modification 9, with reference to fig. 16.

Fig. 16 is a plan view of the second conductor layer 330D of the antenna device according to the present modification. As shown in fig. 16, the second conductor layer 330D according to the present modification includes the floating element 131, the second ground element 132, the first intermediate element 33D, the second intermediate element 34D, the third intermediate element 333D, and the fourth intermediate element 334D. The first intermediate element 33D and the second intermediate element 34D according to the present modification have the same configurations as the first intermediate element 33D and the second intermediate element 34D according to modification 4. In other words, the first intermediate element 33D is connected to the second grounding element 132 at the end on the side away from the third gap 38, and the second intermediate element 34D is connected to the second grounding element 132 at the end on the side away from the third gap 38.

The third intermediate element 333D is disposed at a position adjacent to the floating element 131 in the first direction with the third intermediate gap 335D therebetween. The third intermediate element 333D is connected to the floating element 131 at the end portion on the side away from the fourth gap 338.

The fourth intermediate element 334D is disposed at a position adjacent to the floating element 131 in the first direction with a fourth intermediate gap 336D therebetween. The fourth intermediate element 334D is connected to the floating element 131 at an end portion on the side far from the fourth gap 338.

The antenna device including the second conductor layer 330D can also obtain the same effects as those of the antenna device according to modification 9.

[1-3-11. modified example 11]

The following describes an antenna device according to modification 11 of the present embodiment. In the antenna device according to the present modification, the shapes of the floating element and the second ground element of the second conductor layer are different from those of the antenna device according to modification 9. The following description will be given of the configuration of the antenna device according to the present modification, focusing on differences from the antenna device according to modification 9, with reference to fig. 17.

Fig. 17 is a plan view of the second conductor layer 430 of the antenna device according to the present modification. As shown in fig. 17, the second conductor layer 430 according to the present modification includes a floating element 231, a second ground element 232, a first intermediate element 33, a second intermediate element 34, a third intermediate element 333, and a fourth intermediate element 334, as in the second conductor layer 330 according to modification 9. The second conductor layer 430 according to this modification differs from the second conductor layer 330 according to modification 9 in that the shapes of the floating element 231 and the second ground element 232 are the same as those of the floating element 231 and the second ground element 232 according to modification 7 shown in fig. 13.

The antenna device including the second conductor layer 430 can also obtain the same effects as those of the antenna device according to modification 9.

[1-3-12. modified example 12]

The following describes an antenna device according to modification 12 of the present embodiment. The antenna device according to the present modification is different from the antenna device according to modification 11 in the configurations of the first intermediate element, the second intermediate element, the third intermediate element, and the fourth intermediate element of the second conductor layer. The following description will be given of the configuration of the antenna device according to the present modification, focusing on differences from the antenna device according to modification 11, with reference to fig. 18.

Fig. 18 is a plan view of the second conductor layer 430D of the antenna device according to the present modification. As shown in fig. 18, the second conductor layer 430 according to the present modification includes a floating element 231, a second ground element 232, a first intermediate element 33D, a second intermediate element 34D, a third intermediate element 333D, and a fourth intermediate element 334D.

The first intermediate element 33D and the second intermediate element 34D according to the present modification have the same configurations as the first intermediate element 33D and the second intermediate element 34D according to modification 4. In other words, the first intermediate element 33D is connected to the second grounding element 132 at the end on the side away from the third gap 38, and the second intermediate element 34D is connected to the second grounding element 132 at the end on the side away from the third gap 38.

The third intermediate element 333D and the fourth intermediate element 334D according to the present modification have the same configurations as the third intermediate element 333D and the fourth intermediate element 334D according to modification 1. In other words, the third intermediate element 333D is connected to the floating element 131 at the end portion on the side away from the fourth gap 38, and the fourth intermediate element 334D is connected to the floating element 131 at the end portion on the side away from the fourth gap 338.

The antenna device including the second conductor layer 430D can also obtain the same effects as those of the antenna device according to modification 11.

[1-3-13. modified example 13]

The following describes an antenna device according to modification 13 of the present embodiment. The antenna device according to the present modification is different from the antenna device according to modification 5 in the configuration of the second conductor layer. The following description will be given of the configuration of the antenna device according to the present modification, focusing on differences from the antenna device according to modification 5, with reference to fig. 19.

Fig. 19 is a plan view of the second conductor layer 530 of the antenna device according to the present modification. As shown in fig. 19, the second conductor layer 530 according to the present modification is different from the second conductor layer 130 according to modification 5 shown in fig. 9 in that the first intermediate element 33 and the second intermediate element 34 are not provided. The antenna device including the second conductor layer 530 can also obtain the same effects as those of the antenna device according to modification 5. However, in the antenna device according to modification 5, the second conductor layer 130 includes the first intermediate element 33 and the second intermediate element 34, and the usable frequency can be further widened.

[1-3-14. modified example 14]

The following describes an antenna device according to modification 14 of the present embodiment. The antenna device according to this modification is different from the antenna device according to modification 7 in the configuration of the second conductor layer. Hereinafter, the configuration of the antenna device according to the present modification will be described with reference to fig. 20, focusing on differences from the antenna device according to modification 7.

Fig. 20 is a plan view of the second conductor layer 630 of the antenna device according to the present modification. As shown in fig. 20, the second conductor layer 630 according to the present modification differs from the second conductor layer 230 according to modification 7 shown in fig. 13 in that the first intermediate element 33 and the second intermediate element 34 are not provided. The antenna device including the second conductor layer 630 can also obtain the same effects as those of the antenna device according to modification 7. However, in the antenna device according to modification 7, the second conductor layer 230 has the first intermediate element 33 and the second intermediate element 34, and the usable frequency can be further widened.

[1-4. configuration examples of antenna devices ]

An example of the configuration of the antenna device described above is explained below. The following describes a case where a television is used as an electric appliance in which the antenna device is disposed.

[1-4-1. configuration example 1]

An example 1 of the arrangement of the antenna device 10 according to embodiment 1 will be described with reference to fig. 21 and 22. Fig. 21 and 22 are a rear view and a cross-sectional view respectively showing a placement example 1 in which the antenna device 10 according to the present embodiment is placed in a television 1200. Fig. 22 shows a cross section along the line XXII-XXII shown in fig. 21. In fig. 21 and 22, the vertical direction is a Z-axis direction, the horizontal direction perpendicular to the vertical direction, the width direction of the screen of the television 1200 is a Y-axis direction, and the direction perpendicular to the screen of the television 1200 is an X-axis direction.

As shown in fig. 21, the television 1200 includes a metal base plate 1210 covering the rear surface, a resin bezel 1220 disposed on the edge of the base plate 1210, and a leg portion 1230 for supporting these members. As shown in fig. 22, the television 1200 includes: a liquid crystal cell 1241 constituting a display panel arranged on the front surface, and an optical sheet group 1242 arranged on the rear surface of the liquid crystal cell 1241. The television 1200 further includes: a light guide plate 1243 disposed on the back surface of the optical sheet group 1242, a light emitting element 1246 for emitting light to the light guide plate 1243, a reflective sheet 1244 disposed on the back surface of the light guide plate 1243, and a heat dissipating plate 1245 disposed between the reflective sheet 1244 and the base plate 1210. Further, other components such as a circuit board provided in the television 1200 are not shown.

As shown in fig. 21, the television 1200 includes the antenna device 10 according to the present embodiment and a wireless device 1270. The printed wiring board 11 of the antenna device 10 is disposed below the bottom surface of the base plate 1210. Accordingly, the radiation component from the antenna device 10 toward the front side of the television 1200 can be increased as compared with the case where the antenna device 10 is disposed on the rear surface of the base plate 1210.

The printed wiring board 11 is held by a holding member 1222 provided in the frame 1220. The holding member 1222 is disposed below the bottom surface of the base plate 1210. In the present arrangement example shown in fig. 22, the printed wiring board 11 is held in a posture in which the first conductor layer 20 is positioned below the second conductor layer 30 in the vertical direction and the passive element 23 is positioned on the front surface side of the television 1200 with respect to the feed element 21 and the first ground element 22. Accordingly, the electromagnetic wave radiated from the feeding element 21 is guided by the passive element 23 and propagates to the front of the television 1200 a. In addition, according to the present arrangement example, the radiation component in the front direction can be increased as compared with the case where the printed wiring board 11 is arranged on the rear surface of the base chassis 1210.

The wireless device 1270 is provided with an antenna 1271. The wireless device 1270 supplies radio frequency signals to the antenna 1271 and the antenna apparatus 10, respectively, and processes the radio frequency signals received through the antenna 1271 and the antenna apparatus 10. The wireless device 1270 supplies, for example, a radio frequency signal in a 2.4GHz band based on the wireless LAN standard to the antenna 1271, and supplies a radio frequency signal in a 2.4GHz band based on the Bluetooth (registered trademark) standard to the antenna device 10. The radio device 1270 transmits and receives radio frequency signals to and from the printed wiring board 11 of the antenna device 10 via the coaxial cable 90 of the antenna device 10. The coaxial cable of the antenna device 10 may be fixed to the base chassis 1210 by an adhesive tape 1212, for example. In the present configuration example, the wireless device 1270 is disposed at a position separated in the horizontal direction with respect to the antenna apparatus 10.

In fig. 21 and 22, illustration for disposing the antenna device 10 and the like is omitted, and the television 1200 may further include a cover portion made of resin or the like covering the base plate 1210, the antenna device 10, the wireless device 1270, and the like.

In the television 1200, from the viewpoint of design and downsizing, a reduction in width of the bezel 1220 is required. On the other hand, in general, in order to reduce the influence of the metal ground plane 1210 on the radiation characteristics of the antenna, the antenna is required to isolate the electromagnetic wave from the ground plane 1210 by not less than 1/4(2.4GHz band, about 31mm) at the wavelength λ of the electromagnetic wave. Therefore, when the antenna is disposed on the bezel 1220, it is difficult to narrow the width of the bezel 1220. However, in the antenna device 10 according to the present embodiment, the second conductor layer 30 of the printed wiring board 11 functions as an AMC, and therefore, the influence of the base plate 1210 on the radiation characteristics can be suppressed. In the present embodiment, the distance d1 from the base board 1210 to the printed wiring board 11 can be set to 5 mm. As described above, according to the antenna device 10 of the present embodiment, the radiation component of the television 1200 in the front direction is increased and the width of the bezel 1220 can be reduced by disposing it below the bottom surface of the base plate 1210.

Here, the directional dependence of the radiation intensity from the antenna device according to the present embodiment will be described with reference to fig. 23 and 24. Fig. 23 is a graph showing the measurement results of the horizontal plane radiation characteristics of the antenna device according to the present embodiment alone. Fig. 24 is a graph showing the measurement results of horizontal plane radiation characteristics in a state where the antenna device according to the present embodiment is disposed in the television 1200 according to the present configuration example. Fig. 23 and 24 show radiation characteristics at 2400MHz, 2450MH, and 2480 MHz. In each of the graphs of fig. 23 and 24, the direction of 0 degrees indicates the direction from the feeding element 21 to the non-feeding element 23, and the direction of 180 degrees indicates the direction from the non-feeding element 23 to the feeding element 21. The direction of 90 degrees indicates the direction from the first ground element 22 toward the feeding element 21, and the direction of 270 degrees indicates the direction from the feeding element 21 toward the first ground element 22. In the graph shown in fig. 24, the direction of 0 degree represents the front direction of the television 1200, and the direction of 90 degrees represents the horizontal direction. The measurements shown in fig. 23 and 24 are performed using the antenna device according to modification 6 of the present embodiment.

As shown in fig. 23 and 24, even when the antenna device 10 is disposed in the television 1200, a radiation component in the front direction from the antenna device 10 can be secured. As described above, according to the antenna device 10 of the present embodiment, the influence of the base plate 1210 on the radiation characteristics is suppressed by the second conductor layer 30 functioning as the AMC.

As shown in fig. 23 and 24, the antenna device according to the present embodiment can reduce the radiation component in the horizontal direction to be smaller than the radiation component in the front direction. Therefore, it is possible to ensure isolation of the wireless device 1270 arranged to be spaced apart from the antenna device in the horizontal direction, and to ensure radiation intensity in the front direction. In other words, the antenna device according to the present embodiment can improve directivity in the front direction and isolation between the wireless device 1270 and the antenna 1271 which are horizontally spaced from each other, as compared with the conventional antenna device.

[1-4-2. configuration example 2]

An example 2 of the arrangement of the antenna device 10 according to embodiment 1 will be described with reference to fig. 25 and 26. Fig. 25 and 26 are a rear view and a cross-sectional view, respectively, showing an arrangement example 2 in which the antenna device 10 according to the present embodiment is arranged in a television 1200 a. Fig. 26 shows a cross section along the line XXVI-XXVI shown in fig. 25. The television 1200a shown in fig. 25 and 26 has the same configuration as the television 1200 shown in fig. 21, except for the configuration relating to the arrangement of the antenna device 10.

As shown in fig. 25 and 26, in the present configuration example, the printed wiring board 11 of the antenna device 10 is disposed on the rear surface side of the base chassis 1210 at a position spaced apart from the wireless device 1270 in the horizontal direction. As shown in fig. 26, the printed wiring board 11 is held by a resin holding member 1222a attached to the base board 1210. As shown in fig. 26, the printed wiring board 11 is held in a posture in which the first conductor layer 20 is positioned in the rear surface direction of the second conductor layer 30. In other words, the first conductor layer 20 is disposed at a position farther from the base plate 1210 than the second conductor layer 30. The printed wiring board 11 is held in a posture in which the passive element 23 is positioned vertically below the feed element 21 and the first ground element 22. Accordingly, the electromagnetic wave radiated from the feeder element 21 is guided by the passive element 23 and propagated to the front of the television 1200a through the lower side of the chassis 1210.

In the antenna device 10 according to the present embodiment, the second conductor layer 30 of the printed wiring board 11 functions as an AMC, and therefore, the influence of the base plate 1210 on the radiation characteristics can be suppressed. In the present arrangement example, the distance d2 from the base board 1210 to the printed wiring board 11 can be set to 6 mm.

The radiation characteristic of the antenna device in such a configuration is described with reference to fig. 27. Fig. 27 is a graph showing the measurement results of horizontal plane radiation characteristics in a state where the antenna device according to the present embodiment is disposed in the television 1200a according to the present configuration example. The graphs of the broken line a and the solid line B shown in fig. 27 show the measurement results when the antenna devices according to modification 6 and modification 12 are used, respectively. In the graph shown in fig. 27, the direction of 0 degrees represents the front direction of the television 1200a, and the direction of 90 degrees represents the direction toward the wireless device 1270 in the horizontal direction.

As shown in fig. 27, the radiation characteristic of modification 12 shown by the solid line B is such that the radiation intensity in the front direction is larger. In other words, in configuration example 2, the second conductor layer of the antenna device includes the third intermediate element and the fourth intermediate element, and the radiation intensity of the television 1200a in the front direction can be increased.

(embodiment mode 2)

The antenna device according to embodiment 2 is explained below. The antenna device according to the present embodiment is different from the antenna device 10 according to embodiment 1 in that a radio circuit and the like are integrated. Hereinafter, the antenna device according to the present embodiment will be described mainly focusing on differences from the antenna device 10 according to embodiment 1.

[2-1. construction of antenna device ]

The structure of the antenna device according to the present embodiment will be described with reference to fig. 28 and 29. Fig. 28 and 29 are oblique and cross-sectional views showing the structure of the antenna device 710 according to the present embodiment. Fig. 29 shows a section along the line XXIX-XXIX shown in fig. 28.

As shown in fig. 29, the antenna device 710 according to the present embodiment includes a first conductor layer 20, a second conductor layer 30, a third conductor layer 740, a first dielectric layer 761, a second dielectric layer 762, a first wiring layer 720, a second wiring layer 730, a radio circuit 712, a connector 714, and a via electrode 750.

The first conductor layer 20 and the second conductor layer 30 have the same configurations as the first conductor layer 20 and the second conductor layer 30 according to embodiment 1.

The third conductor layer 740 has a conductor to be grounded, similarly to the third conductor layer 40 according to embodiment 1. The third conductor layer 740 extends to a position facing the radio circuit 712, and is used as a ground pattern conductor of the radio circuit 712. In other words, the first conductor layer 20, the second conductor layer 30, and the third conductor layer 740, which form the antenna of the antenna device 710, and the radio circuit 712 share a ground pattern conductor.

The first dielectric layer 761 is a dielectric layer disposed between the first conductor layer 20 and the second conductor layer 30. The first dielectric layer 761 is also disposed between the first wiring layer 720 and the second wiring layer 730.

Second dielectric layer 762 is a dielectric layer disposed between second conductor layer 30 and third conductor layer 740. A second dielectric layer 762 is also disposed between second wiring layer 730 and third wiring layer 740.

The radio circuit 712 is a circuit that supplies a radio frequency signal to the feeding element 21 and the first ground element 22 of the first conductor layer 20 and processes the radio frequency signal received by the feeding element 21 and the first ground element 22. The radio circuit 712 is formed as an ic (integrated circuit) chip, for example. A radio circuit 712, a first wiring layer 720 mounted on the first dielectric layer 761. Accordingly, the radio circuit 712 and the feeding element 21 are electrically connected via the first wiring layer 720 and the like.

The connector 714 is a component for connecting the antenna device 710 to another device. The connector 714 is used to obtain a signal transmitted from the antenna device 710 and output a signal received by the antenna device 710. Further, power may be provided from connector 714. The connector 714 is mounted on the first wiring layer 720 on the first dielectric layer 761.

The first wiring layer 720 is a conductor layer in which a pattern wiring for connecting the wireless circuit 712, the connector 714, and the feeding element 21 is formed.

The second wiring layer 730 is a conductor layer in which a pattern wiring for connecting the wireless circuit 712, the connector 714, and the feeding element 21 is formed. The second wiring layer 730 may not necessarily be provided.

The first wiring layer 720, the second wiring layer 730, and the third conductor layer 740 may be connected to each other at the via electrode 750.

The antenna device 710 having such a configuration can also obtain the same effects as those of the antenna device 10 according to embodiment 1.

[2-2. configuration example of antenna device ]

An example of the arrangement of the antenna device 710 according to the present embodiment will be described with reference to fig. 30 and 31. Fig. 30 and 31 are a rear view and a cross-sectional view, respectively, showing an example of an arrangement in which the antenna device 710 according to the present embodiment is arranged in the television 1200 b. Fig. 31 shows a cross-section along the XXXI-XXXI line shown in fig. 30.

As shown in fig. 30, the television 1200b includes a wireless device 1270b and the antenna device 710 according to the present embodiment. The television 1200b is different from the television 1200a shown in fig. 25 in the configuration of the wireless device 1270b and the antenna apparatus 710, and the others are the same.

The wireless device 1270b is different from the wireless device 1270 shown in fig. 25 in that a wireless circuit for the antenna apparatus 710 is not provided, and the others are the same.

The antenna unit 710 is located on the back surface side of the base plate 1210 and is disposed at a position horizontally spaced from the wireless device 1270 b. As shown in fig. 31, the antenna device 710 is held by a resin holding member 1222b attached to the base plate 1210. The antenna device 710 is held in a posture in which the first conductor layer 20 is positioned in the rear surface direction of the second conductor layer 30. In other words, the first conductor layer 20 is disposed at a position farther from the base plate 1210 than the second conductor layer 30. The antenna device 710 is held in a posture in which the parasitic element 23 is positioned below the feed element 21 and the first ground element 22 in the vertical direction. Therefore, similarly to the arrangement example 2 of the antenna device 10 according to embodiment 1, the electromagnetic wave radiated from the feed element 21 is propagated to the front of the television 1200a via the lower side of the ground plane 1210 by the waveguide of the parasitic element 23.

With the antenna device 710 according to the present embodiment, the second conductor layer 30 functions as an AMC, and therefore, the influence of the base plate 1210 on the radiation characteristics can be suppressed. In the present arrangement example, the distance d2 from the base plate 1210 to the antenna device 710 can be set to 6 mm.

(embodiment mode 3)

The antenna device according to embodiment 3 is explained below. The antenna device according to this embodiment is different from the antenna device according to embodiment 2 in the arrangement of a radio circuit and the like. Hereinafter, the antenna device according to the present embodiment will be described mainly focusing on differences from the antenna device according to embodiment 2.

[3-1. construction of antenna device ]

The structure of the antenna device according to the present embodiment will be described with reference to fig. 32 and 33. Fig. 32 and 33 are oblique and cross-sectional views showing the structure of the antenna device 810 according to the present embodiment. Fig. 33 shows a cross-section along the line XXXIII-XXXIII shown in fig. 32.

As shown in fig. 33, the antenna device 810 according to the present embodiment includes: first conductor layer 20, second conductor layer 30, third conductor layer 840, first dielectric layer 861, second dielectric layer 862, first wiring layer 820, second wiring layer 830, radio circuit 712, connector 714, and via electrode 850.

The first conductor layer 20 and the second conductor layer 30 have the same configurations as the first conductor layer 20 and the second conductor layer 30 according to embodiment 1.

The third conductor layer 840 has a conductor to be grounded, similarly to the third conductor layer 40 according to embodiment 1. The third conductor layer 840 extends to a region where the wireless circuit 712 and the like are mounted, and is used as a ground pattern conductor of the wireless circuit 712. In other words, the first conductor layer 20, the second conductor layer 30, and the third conductor layer 840, which form the antenna of the antenna device 810, and the radio circuit 712 share a ground pattern conductor. In this embodiment, the third conductor layer 840 further includes a wiring layer connected to the wireless circuit 712 and the like.

The first dielectric layer 861 is a dielectric layer disposed between the first conductor layer 20 and the second conductor layer 30. First dielectric layer 861 is also disposed between first wiring layer 820 and second wiring layer 830.

The second dielectric layer 862 is a dielectric layer disposed between the second conductor layer 30 and the third conductor layer 840. A second dielectric layer 862 is also disposed between the second wiring layer 830 and the third wiring layer 840.

The radio circuit 712 is similar to the radio circuit 712 according to embodiment 2. A radio circuit 712, and a third conductor layer 840 mounted on the second dielectric layer 862. Thus, the radio circuit 712 is electrically connected to the feeding element 21 via the wiring layer and the like.

The connector 714 is the same as the connector 714 according to embodiment 2. A connector 714, and a third conductor layer 840 mounted on the second dielectric layer 862.

The first wiring layer 820 is a conductor layer in which a pattern wiring for connecting the wireless circuit 712, the connector 714, and the feeding element 21 is formed.

The second wiring layer 830 is a conductor layer in which a pattern wiring for connecting the wireless circuit 712, the connector 714, and the feeding element 21 is formed. The second wiring layer 830 may not necessarily be provided.

The first wiring layer 820, the second wiring layer 830, and the third conductor layer 840 may be connected to each other at the via electrode 850.

The antenna device 810 having such a configuration can also obtain the same effects as those of the antenna device 710 according to embodiment 2.

[3-2. configuration example of antenna device ]

An example of the arrangement of the antenna device 810 according to the present embodiment will be described with reference to fig. 34 and 35. Fig. 34 and 35 are a rear view and a cross-sectional view, respectively, showing an example of an arrangement in which the antenna device 810 according to the present embodiment is arranged in the television 1200 c. Fig. 35 shows a cross-section along the line XXXV-XXXV shown in fig. 34.

As shown in fig. 35, the television 1200c includes: a wireless device 1270b and the antenna device 810 according to the present embodiment. The television 1200c is different from the television 1200b according to embodiment 2 in the configuration and arrangement of the antenna device 810, and the other points are the same.

The antenna unit 810 is located below the bottom surface of the base plate 1210 and is disposed at a position horizontally spaced from the wireless device 1270 b. As shown in fig. 35, the antenna device 810 is held by a holding member 1222 provided in the frame 1220. The antenna device 810 is held in a posture in which the first conductor layer 20 is positioned below the second conductor layer 30 in the vertical direction and the parasitic element 23 is positioned on the front side of the television 1200c with respect to the feed element 21 and the first ground element 22. The electromagnetic wave radiated from the feeding element 21 passes through the waveguide of the passive element 23 and propagates to the front of the television 1200 c.

(other embodiments)

As described above, embodiments 1 to 3 and the respective modifications of embodiment 1 have been described as examples of the technique disclosed in the present application. However, the technique in the present disclosure is not limited to this, and can be applied to an embodiment in which changes, substitutions, additions, omissions, and the like are appropriately made. Further, each of the constituent elements described in embodiments 1 to 3 and the modification of embodiment 1 may be combined as a new embodiment.

For example, although the above-described embodiment shows an example of a configuration in which a television includes an antenna device, an electric appliance including an antenna device is not limited to a television. The antenna device may be provided by, for example, an audio player or the like.

Although the antenna device according to embodiment 1 includes the coaxial cable 90, the antenna device may not necessarily include the coaxial cable 90. Other forms of wiring may be used to provide the radio frequency signal to the antenna arrangement.

In the above embodiments, the respective conductor layers are formed on the dielectric layer by using copper foil, but the respective conductor layers may be formed by using sheet metal or by metal vapor deposition.

As described above, the embodiments are explained as an example of the technique in the present disclosure. The drawings and detailed description are provided for this purpose.

Therefore, the components described in the drawings and the detailed description include not only essential components for solving the problem but also components that are not essential for solving the problem for illustrating the above-described technique. Therefore, those components that are not essential cannot be immediately recognized as essential components from the descriptions of the drawings and the detailed description of those components that are not essential.

Further, the above-described embodiments are embodiments for illustrating the technology of the present disclosure, and therefore, various modifications, substitutions, additions, omissions, and the like can be made to the technical solutions and within the range equivalent thereto.

For example, in a part of the antenna device according to embodiment 1 and the modification thereof, the floating element and the second ground element have asymmetric shapes with respect to the second gap. Such a configuration can be applied to all the embodiments and the modifications described above. Specifically, in any of the antenna devices, the length of the second ground element may be shorter than the length of the buoyant element in the first direction. In this case, the length of the portion of the third conductor layer facing the second ground element in the first direction can also be shortened. Similarly, the length of the portion of the first dielectric layer and the second dielectric layer facing the second ground element in the first direction can be shortened. In this way, the length of the second ground element in the first direction can be made shorter than the length of the floating element in the first direction, and the length of the entire antenna device in the first direction can be shortened. In other words, further miniaturization of the antenna device can be achieved. Therefore, the degree of freedom in installation of the antenna device can be improved. In addition, even in such a configuration, the same effects as those of a configuration in which the length of the second grounded element in the first direction is substantially equal to the length of the floating element in the first direction can be obtained.

The present disclosure can be applied to a television set or the like as an antenna device having excellent directivity and isolation from other wireless devices.

Description of the symbols

10, 710, 810 antenna arrangement

11 printed wiring board

20, 20A, 20B first conductor layer

21 supply element

22 first ground element

23, 23B without power supply element

24 first gap

30, 30A, 30C, 30D, 130, 130D, 230, 230D, 330, 330D, 430, 430D, 530, 630 second conductor layer

31, 31A, 131, 231 floating element

31a, 41a opening part

32, 32A, 132, 232 second grounding element

33, 33A, 33D first intermediate element

34, 34A, 34D second intermediate member

35, 35A, 35D first intermediate gap

36, 36A, 36D second intermediate gap

37 second gap

38 third gap

40, 40A, 740, 840 third conductor layer

41, 41A third grounding element

42 pad electrode

51 first via electrode

52 second via electrode

61, 761, 861 a first dielectric layer

62, 762, 862 second dielectric layer

90 coaxial cable

91 coaxial connector

333, 333D third intermediate element

334, 334D fourth intermediate element

335, 335D third intermediate gap

336, 336D fourth intermediate gap

712 radio circuit

714 connector

720, 820 first wiring layer

730, 830 second wiring layer

750, 850 via electrode

1200, 1200a, 1200b, 1200c television

1210 base plate

1212 adhesive tape

1220 frame

1222, 1222a, 1222b holding member

1230 leg support part

1241 liquid crystal cell

1242 group of optical sheets

1243 light guide plate

1244 reflecting sheet

1245 Heat sink

1246 light emitting element

1270, 1270b Wireless device

1271 antenna

1311, 2311 Floating basal part

1312, 2312 first floating extension part

1313, 2313 second buoyant extension

1314, 2314 floating tongue

1315, 2315 first floating bending part

1316, 2316 second floating bend

1317 first floating inward part

1318 second Floating inward section

1321, 2321 ground backbone

1322, 2322 first ground extension

1323, 2323 second ground extension

1324, 2324 grounding tongue

1325, 2325 first ground flexure

1326, 2326 second ground flexure

1327 first grounded inward part

1328 second grounded inward part

2317 the first floating outward part

2318 the second floating outward part

2327 first grounded outward part

2328 second grounded outward part