阅读说明：本技术 天线模块以及具有这种天线模块的便携式终端盖 (Antenna module and portable terminal cover having the same ) 是由 白亨一 柳炅铉 李灿雨 李承晔 朴在日 于 2020-04-24 设计创作，主要内容包括：提出了一种天线模块,用于短程通信的辐射图案、用于发送和接收无线电力的辐射图案、用于电子支付的辐射图案中的至少一个以及用于超宽带通信的辐射图案一体地形成在天线模块中,以使得能够与车辆进行通信。所提出的天线模块包括：第一天线,第一天线具有在第一频带中谐振的第一辐射图案；以及,第二天线,第二天线设置在第一天线的一个表面上,并且具有在不同于第一频带的UWB频带中谐振的第二辐射图案。第一天线包括在其上形成有第一辐射图案的基底基板和从基底基板向外延伸的延伸基板,并且,第二天线设置在延伸基板的上表面上。(An antenna module is provided in which at least one of a radiation pattern for short-range communication, a radiation pattern for transmitting and receiving wireless power, a radiation pattern for electronic payment, and a radiation pattern for ultra-wideband communication are integrally formed to enable communication with a vehicle. The proposed antenna module comprises: a first antenna having a first radiation pattern that resonates in a first frequency band; and a second antenna provided on one surface of the first antenna and having a second radiation pattern resonating in a UWB band different from the first band. The first antenna includes a base substrate on which a first radiation pattern is formed and an extension substrate extending outward from the base substrate, and the second antenna is disposed on an upper surface of the extension substrate.)

1. An antenna module, the antenna module comprising:

a first antenna having a first radiation pattern that resonates in a first frequency band; and

a second antenna provided on a surface of the first antenna and having a second radiation pattern to resonate in a UWB frequency band different from the first frequency band,

wherein the first antenna comprises: a base substrate formed with the first radiation pattern and an extension substrate extending outward from the base substrate, and

wherein the second antenna is disposed on an upper surface of the extension substrate.

2. The antenna module as set forth in claim 1,

wherein the base substrate includes:

a first extension substrate extending outward from one side end of the base substrate; and

a second extension substrate spaced apart from the first extension substrate by a set interval or more and extending outward from the other side end of the base substrate.

3. The antenna module as claimed in claim 2,

wherein the second antenna comprises:

a first UWB antenna disposed on an upper surface of the first extension substrate; and

a second UWB antenna disposed on an upper surface of the second extension substrate.

4. The antenna module as set forth in claim 1,

wherein the second antenna comprises:

a substrate disposed on an upper surface of the extension substrate; and

a ground pattern provided on one of the upper and lower surfaces of the substrate, and

wherein the second radiation pattern is spaced apart from the ground pattern on the upper surface of the substrate.

5. The antenna module as claimed in claim 4,

wherein the second antenna further comprises:

a feeding pattern disposed on the upper surface of the substrate and connected to the second radiation pattern; and

a connection pattern disposed on the upper surface of the substrate and connecting the second radiation pattern and the ground pattern.

6. An antenna module, the antenna module comprising:

a flexible substrate;

a UWB radiation pattern formed on the flexible substrate;

an extension substrate extending outwardly from the flexible substrate;

a connector formed on the extension substrate; and

a connection pattern formed on the extension substrate to connect the UWB radiation pattern and the connector.

7. The antenna module as claimed in claim 6,

wherein the UWB radiation pattern comprises:

a radiation pattern;

a feeding pattern formed on the flexible substrate and connected to the radiation pattern;

a ground pattern formed on the flexible substrate and spaced apart from the radiation pattern; and

another connection pattern formed on the extension substrate and connecting the radiation pattern and the ground pattern.

8. A portable terminal cover to be fixed to a portable terminal, the portable terminal cover comprising:

a UWB antenna; and

a signal processing circuit configured to process signals transmitted and received by the UWB antenna,

wherein the UWB antenna includes:

a radiation pattern;

a feeding pattern connected to the radiation pattern;

a ground pattern spaced apart from the radiation pattern; and

a connection pattern connecting the radiation pattern and the ground pattern.

9. The portable terminal cover according to claim 8,

wherein the UWB antenna further comprises: another radiation pattern.

10. The portable terminal cover according to claim 8, further comprising: another UWB antenna spaced apart from the UWB antenna and connected to the signal processing circuit.

Technical Field

The present disclosure relates to an antenna module and a portable terminal cover having the same, and more particularly, to an antenna module mounted on a portable terminal to transmit and receive data to and from a vehicle and a portable terminal cover having the same.

Background

In recent years, vehicles provide various conveniences to drivers using a distance between the driver and the vehicle, a driver position, a vehicle position, and the like. For example, the vehicle provides a driver with a function of navigating a path to a parked vehicle using a driver position and a vehicle position, and provides a function of opening a vehicle door when the driver approaches the vehicle and locking the vehicle door when the driver leaves the vehicle using a distance between the driver and the vehicle.

Conventional vehicles use Low Frequency (LF) or Radio Frequency (RF) communication to measure the distance between the driver and the vehicle, the driver position, and the vehicle position.

Recently, a position measurement technique using Ultra-Wide Band (UWB) communication is being applied to vehicles. UWB communication can provide high-precision wireless positioning and communication functions through pulse signals. UWB communication uses a frequency band ranging from about 3.1GHz to 10.6GHz and a transmission distance of about 10m to 1 km. UWB communication facilitates distance measurement due to its excellent time resolution with pulses of several nanoseconds, and can realize low power with a low duty ratio.

Therefore, UWB communication is applied to the field of position measurement required for application services based on low-speed position identification and the field of position measurement with an accuracy of about +/-10 cm.

For this reason, it is studied to mount a second antenna on the portable terminal to measure the relative position of the vehicle. As the second antenna mounted on the portable terminal, there are a UWB chip antenna, a Laser Direct Structuring (LDS) antenna, and the like.

However, when the UWB chip antenna is mounted on the portable terminal, there are problems in that the performance is lowered, and there are problems in that the LDS antenna increases the price of the portable terminal due to its expensive price, and the LDS antenna requires a certain degree or more of space, and thus, the LDS antenna is difficult to mount on the portable terminal due to insufficient mounting space.

Disclosure of Invention

Technical problem

The present disclosure is proposed to solve the above-mentioned conventional problems, and an object of the present disclosure is to provide an antenna module having one or more of a near field communication radiation pattern, a wireless power transmission/reception radiation pattern, an electronic payment radiation pattern, and an ultra wide band communication radiation pattern integrally formed thereon to enable communication with a vehicle.

Further, another object of the present disclosure is to provide an antenna module having a radiation pattern for a UWB band, the radiation pattern being formed on a base substrate having a low dielectric loss factor; and a connector formed on an extension substrate extending outward from the base substrate.

Further, another object of the present disclosure is to provide a portable terminal cover coupled to a portable terminal to support communication between a vehicle and the portable terminal through a UWB band.

Technical scheme

To achieve the above object, an antenna module according to an exemplary embodiment of the present disclosure includes: a first antenna having a first radiation pattern that resonates in a first frequency band; and a second antenna provided on a surface of the first antenna and having a second radiation pattern to resonate in a UWB band different from the first band, wherein the first antenna includes: a base substrate formed with a first radiation pattern and an extension substrate extending outward from the base substrate, and a second antenna is disposed on an upper surface of the extension substrate.

The base substrate may include: a first extension substrate extending outward from one side of the base substrate; and a second extension substrate spaced apart from the first extension substrate by a set interval or more and extending outward from the other side of the base substrate, wherein the second antenna may include: a first UWB antenna disposed on an upper surface of the first extension substrate; and a second UWB antenna disposed on the upper surface of the second extension substrate.

The second antenna may include: a substrate disposed on an upper surface of the extension substrate; and a ground pattern disposed on one of the upper and lower surfaces of the substrate, and the second radiation pattern may be disposed spaced apart from the ground pattern on the upper surface of the substrate. At this time, the second antenna may further include: a feeding pattern disposed on the upper surface of the substrate and connected to the second radiation pattern; and a connection pattern disposed on the upper surface of the substrate and connecting the second radiation pattern and the ground pattern.

In order to achieve the above object, an antenna module according to another exemplary embodiment of the present disclosure includes: a flexible substrate; a UWB radiation pattern formed on the flexible substrate; an extension substrate extending outward from the flexible substrate; a connector formed on the extension substrate; and a connection pattern formed on the extension substrate to connect the UWB radiation pattern and the connector. At this time, the UWB radiation pattern may include: a radiation pattern; a feeding pattern formed on the flexible substrate and connected to the radiation pattern; a ground pattern formed on the flexible substrate and spaced apart from the radiation pattern; and another connection pattern formed on the flexible substrate and connecting the radiation pattern and the ground pattern.

To achieve the above object, a portable terminal cover according to an exemplary embodiment of the present disclosure includes: a UWB antenna and a signal processing circuit configured to process signals transmitted and received by the UWB antenna, wherein the UWB antenna comprises: a radiation pattern; a feeding pattern connected to the radiation pattern; a ground pattern spaced apart from the radiation pattern; and a connection pattern connecting the radiation pattern and the ground pattern. At this time, the UWB antenna may further include: another radiation pattern.

The antenna terminal cover according to an exemplary embodiment may further include: another UWB antenna spaced apart from the UWB antenna and connected to the signal processing circuit.

Technical effects

According to the antenna module of the present disclosure, one or more of a near field communication radiation pattern, a wireless power transmission/reception radiation pattern, an electronic payment radiation pattern, and a UWB communication radiation pattern may be integrally formed, thereby minimizing an installation space and enabling UWB communication between a vehicle and a portable terminal.

Further, the antenna module may have a UWB radiation pattern formed on a base substrate having a low dielectric loss factor, and the antenna module may have a connector formed on an extension substrate extending outward from the base substrate, thereby occupying a minimum space when mounted on the portable terminal and enabling UWB communication.

Further, a portable terminal cover having an antenna module may be coupled to the portable terminal to support communication between the vehicle and the portable terminal through a UWB band.

Drawings

Fig. 1 is a diagram for explaining an antenna module mounted on a portable terminal according to an exemplary embodiment of the present disclosure.

Fig. 2 and 3 are diagrams for explaining an antenna module according to an exemplary embodiment of the present disclosure.

Fig. 4 is a diagram for explaining a second antenna according to an exemplary embodiment of the present disclosure.

Fig. 5 is a diagram for explaining an antenna module according to another exemplary embodiment of the present disclosure.

Fig. 6 is a diagram for explaining a modified example of the second antenna according to an exemplary embodiment of the present disclosure.

Fig. 7 is a diagram for explaining a portable terminal cover according to an exemplary embodiment of the present disclosure.

Detailed Description

Hereinafter, the most preferred exemplary embodiments of the present disclosure will be described with reference to the accompanying drawings so as to particularly describe the exemplary embodiments, so that those skilled in the art to which the present disclosure pertains can easily realize the technical spirit of the present disclosure. First, in adding reference numerals to components of each figure, it should be noted that the same components have the same reference numerals as much as possible even though shown in different figures. Further, in describing the present disclosure, when it is determined that a detailed description of a related well-known configuration or function may make the gist of the present disclosure unclear, the detailed description thereof will be omitted.

Referring to fig. 1, an antenna module (100) according to an exemplary embodiment of the present disclosure is a combination antenna mounted inside a portable terminal (10). At this time, the combined antenna refers to an antenna provided between the portable terminal body (12) and the rear cover (14) to include two or more radiation patterns resonating in different frequency bands.

For example, the antenna module (100) is a flexible printed circuit board including one or more of a Near Field Communication (NFC) radiation pattern (hereinafter, referred to as "NFC radiation pattern"), a wireless power transmission/reception (WPC) radiation pattern (hereinafter, referred to as "WPC radiation pattern"), an electronic payment (MST) radiation pattern (hereinafter, referred to as "MST radiation pattern"), and an ultra wideband communication (UWB) radiation pattern (hereinafter, referred to as "UWB radiation pattern").

One or more antenna anchor points are installed in the vehicle, the anchor points transmitting and receiving a positioning signal and a response signal through an antenna resonating in the UWB band to accurately detect the position of the vehicle. At this time, the position of the vehicle may be measured using the signal reception time, the Received Signal Strength (RSSI), and the like of the positioning signal and the response signal transmitted and received by the UWB radiation pattern. In this example, the position of the vehicle is a relative position between the portable terminal (10) and the vehicle, and the position of the vehicle may include a distance, an angle, or the like.

Referring to fig. 2 and 3, the antenna module (100) is configured to include a first antenna (120) and a second antenna (140).

The first antenna (120) is an antenna resonating in one or more of an NFC frequency band, a WPC frequency band, and an MST frequency band. To this end, the first antenna (120) includes a base substrate (122), and a first radiation pattern (124) of one or more of an NFC radiation pattern, a WPC radiation pattern, and an MST radiation pattern is disposed on an upper surface of the substrate (122).

The base substrate (122) may be formed of a thin film substrate such as a film, a sheet, or a thin film substrate. The base substrate (122) may be a Flexible Printed Circuit Board (FPCB). The base substrate (122) is, for example, a Polyimide (PI) sheet. Here, the base substrate (122) is not limited thereto, and the base substrate may be used in various ways as long as the base substrate is a thin film substrate and a first radiation pattern (124) constituting an antenna may be formed.

The base substrate (122) includes an extension substrate having a second antenna (140) mounted (disposed) thereon. The extension substrate may be formed to extend outward from the base substrate (122), and may be integrally formed with the base substrate (122).

The second antenna (140) is an antenna resonating in the UWB band, and the second antenna includes a second radiation pattern (142) resonating in the UWB band. The second antenna (140) may further include a plurality of second radiation patterns (142). The second antenna (140) may be disposed on an upper surface of at least one extension substrate extending outward from the base substrate (122).

For example, referring to fig. 4, the second antenna (140) is configured to include a substrate (141), a second radiation pattern (142), and a ground pattern (143).

The substrate (141) is made of an insulating material or a dielectric material, and is formed in a plate shape having a predetermined shape. The substrate (141) is, for example, a polyimide sheet.

The base sheet (141) is disposed on an upper surface of an extension substrate extending outward from the base substrate (122). An adhesive sheet (not shown) is interposed between the base sheet (141) and the extension substrate, and the base sheet (141) is adhered to the upper surface of the extension substrate through the adhesive sheet.

The second radiation pattern (142) is made of a metal material such as copper, and is disposed on an upper surface of the substrate (141). The second radiation pattern (142) is formed in various shapes in a virtual rectangular space on the substrate (141). At this time, the second radiation pattern (142) is connected to the feed source through the feed pattern (144). Here, although it has been described that the second radiation pattern (142) is formed on the base sheet (141) and disposed on the extension substrate, the second radiation pattern (142) is not limited thereto, and the second radiation pattern may be directly formed on the upper surface of the extension substrate.

The ground pattern (143) is made of a metal material such as copper, and is disposed on an upper surface of the substrate (141). At this time, the ground pattern (143) is connected to the second radiation pattern (142) through the first connection pattern (145). Here, the ground pattern (143) may also be disposed on the lower surface of the substrate (141), and the ground pattern is connected to the first connection pattern (145) formed on the upper surface of the substrate (141) through a via hole. Here, although it has been described that the ground pattern (143) is formed on the base sheet (141) and provided on the extension substrate, the ground pattern (143) is not limited thereto, and the ground pattern may be directly formed on the upper surface or the lower surface of the extension substrate.

Referring to fig. 5, a plurality of second antennas (140) may be formed, and the second antennas are configured to include a first UWB antenna (140a) and a second UWB antenna (140b), for example.

The first UWB antenna (140a) and the second UWB antenna (140b) communicate with a UWB antenna (not shown) installed in the vehicle to detect an accurate position of the vehicle. The first UWB antenna (140a) and the second UWB antenna (140b) are disposed at a predetermined interval from each other. The first UWB antenna (140a) may be disposed on one side of the base substrate (122), and the second UWB antenna (140b) may be disposed on the other side of the base substrate (122).

For example, the first UWB antenna (140a) is formed on a first extension substrate (ES1) extending outward from one side surface of the base substrate (122), and the first antenna (120) is formed on the base substrate. A second UWB antenna (140b) is formed on a second extension substrate (ES2) extending outward from the other side of the base substrate (122). At this time, the first extension substrate (ES1) and the second extension substrate (ES2) are disposed at a predetermined interval from each other.

Meanwhile, the antenna module (100) according to an embodiment of the present disclosure may be composed of the second antenna (140), and may also operate as an antenna for communication in a UWB band having a bandwidth of about 6GHz to 8 GHz. The Flexible Printed Circuit Board (FPCB) type mainly uses the UWB antenna of the coaxial cable type because the antenna performance of the UWB antenna of the coaxial cable type in the UWB band is degraded. However, since it is difficult to realize a thin film due to the thickness of the coaxial cable, the coaxial cable type antenna is difficult to be mounted on the portable terminal (10).

Therefore, referring to fig. 6, the second antenna (140) may be formed of a single antenna of a jumper flexible type. Here, the jumper flexible antenna is an antenna having a structure in which a radiation pattern and a connector (146) are formed on a flexible printed circuit board.

The second antenna (140) may be integrally formed with the UWB antenna and the connector (146). The second antenna (140) may be configured to include a flexible substrate (i.e., a base sheet (141)), a UWB radiation pattern (142) formed on the flexible substrate (141), an extension substrate (147) extending outward from the flexible substrate (141), and a connector (146) formed on the extension substrate (147). A second connection pattern (148) connecting the UWB radiation pattern (142) and the connector (146) is formed on the extension substrate (147). Here, the flexible substrate (141) is formed of a substrate having a low dielectric constant (low dielectric dissipation factor) because antenna performance is degraded when the flexible substrate is made of a material generally used for a flexible printed circuit substrate.

Referring to fig. 7, the portable terminal cover (200) according to an exemplary embodiment of the present disclosure is a substrate fixed to the portable terminal (10) to protect the portable terminal (10). A portable terminal cover (200) is fixed to a portable terminal (10) to support UWB band communication between the portable terminal (10) and a vehicle, the portable terminal having no antenna mounted thereon that resonates in the UWB band.

For this, a UWB antenna (210) formed of a Flexible Printed Circuit Board (FPCB) and a signal processing circuit (220) configured to process signals transmitted and received by the UWB antenna (210) are embedded in a portable terminal cover (200). The portable terminal cover (200) may include a plurality of UWB antennas (210) having one radiation pattern formed thereon, or may include one UWB antenna (210) having two or more radiation patterns formed thereon.

A signal processing circuit (220) transmits the reception time, the reception signal strength, and the like of a signal received by a UWB antenna (210) to a portable terminal (10). The signal processing circuit (220) can detect the relative position of the portable terminal (10) and the vehicle using the reception time, the received signal strength, and the like of the signal received by the UWB antenna (210).

While preferred exemplary embodiments of the present disclosure have been described above, it should be understood that the present disclosure may be modified in various forms and that various modified examples and changed examples may be practiced by those skilled in the art without departing from the scope of the claims of the present disclosure.