阅读说明：本技术 多频天线模块 (Multi-frequency antenna module ) 是由 刘建昇 罗国兆 于 2020-04-22 设计创作，主要内容包括：本发明提供一种多频天线模块,适于配置在壳体,多频天线模块包括馈入端、第一接地端、第二接地端、低频天线、中频天线及高频天线。低频天线连接馈入端及第一接地端,用以形成低频回路,以产生低频。中频天线连接于低频天线,用以形成中频回路,以产生中频。高频天线位于中频天线旁,且高频天线连接第二接地端,用以形成高频回路,高频天线与中频天线之间具有间隙,高频天线用以与中频天线共同耦合出高频,其中低频天线、中频天线及高频天线适于沿着壳体配置而呈现出立体结构。(The invention provides a multi-frequency antenna module which is suitable for being configured on a shell. The low-frequency antenna is connected with the feed-in terminal and the first grounding terminal and used for forming a low-frequency loop so as to generate low frequency. The intermediate frequency antenna is connected with the low frequency antenna and used for forming an intermediate frequency loop so as to generate an intermediate frequency. The high-frequency antenna is located beside the medium-frequency antenna and connected with the second grounding end to form a high-frequency loop, a gap is formed between the high-frequency antenna and the medium-frequency antenna, the high-frequency antenna and the medium-frequency antenna are coupled together to form high frequency, and the low-frequency antenna, the medium-frequency antenna and the high-frequency antenna are suitable for being arranged along the shell to form a three-dimensional structure.)

1. A multi-frequency antenna module adapted to be disposed in a housing, the multi-frequency antenna module comprising:

a feed-in terminal;

a first ground terminal;

a second ground terminal;

the low-frequency antenna is connected with the feed-in end and the first grounding end and used for forming a low-frequency loop so as to generate low frequency;

the intermediate frequency antenna is connected with the low frequency antenna and used for forming an intermediate frequency loop so as to generate an intermediate frequency; and

and the high-frequency antenna is positioned beside the medium-frequency antenna and connected with the second grounding end to form a high-frequency loop, a gap is formed between the high-frequency antenna and the medium-frequency antenna, the high-frequency antenna and the medium-frequency antenna are coupled out high frequency together, and the low-frequency antenna, the medium-frequency antenna and the high-frequency antenna are suitable for being configured along the shell to present a three-dimensional structure.

2. The multi-frequency antenna module of claim 1, wherein the housing has a bottom surface, a first side surface, and a top surface that are connected, wherein the low-frequency antenna comprises a first section, a second section, a third section, and a fourth section that are connected in a meandering manner, wherein the feed-in end is located on the first section and located on the bottom surface, wherein the first section extends from the bottom surface and the first side surface of the housing to the top surface, and wherein the second section and the fourth section are located on the top surface.

3. The multi-frequency antenna module of claim 2, wherein the second and fourth segments are parallel to each other.

4. The multi-frequency antenna module of claim 2, wherein the housing further has a second side surface connected to the top surface, and the third section adjustably extends to the second side surface.

5. The multi-frequency antenna module of claim 2, wherein the low-frequency antenna further comprises a fifth section connected to the second section and located parallel to and beside the first section, the fifth section extending from the bottom surface, first side surface to the top surface of the housing.

6. The multi-frequency antenna module of claim 5, wherein the first ground is on the fifth segment and on the bottom surface.

7. The multi-frequency antenna module of claim 2, wherein the if antenna is connected to the second section and located on the top surface.

8. The multi-frequency antenna module of claim 2, wherein the mid-frequency antenna extends in a direction opposite to that of the second section.

9. The multi-band antenna module of claim 2, wherein the high-frequency antenna comprises a sixth section and a seventh section connected in a bending manner, the sixth section extends from the bottom surface to the first side surface, the seventh section is located on the first side surface, and an extending direction of the seventh section is the same direction as an extending direction of the if antenna.

10. The multi-frequency antenna module of claim 9, wherein the second ground is on the sixth segment and on the bottom surface.

11. The multi-band antenna module of claim 1, wherein the low frequency is between 824 mhz and 894 mhz, the intermediate frequency is between 1700 mhz and 1900mhz, and the high frequency is between 2.1ghz and 2.17 ghz.

Technical Field

The present invention relates to an antenna module, and more particularly, to a multi-band antenna module.

Background

Currently, a multi-frequency antenna is generally configured on a substrate in a planar form. With the development of technology, the size of electronic products is becoming thinner and smaller, and the matching of the multi-frequency antenna and the substrate occupies more internal space of the electronic products, so that the size of the electronic products is difficult to be reduced.

Disclosure of Invention

The invention provides a multi-frequency antenna module which can be coupled out of multiple frequency bands and is arranged along with a shell, so that the space is saved.

The invention discloses a multi-frequency antenna module which is suitable for being configured on a shell. The low-frequency antenna is connected with the feed-in terminal and the first grounding terminal and used for forming a low-frequency loop so as to generate low frequency. The intermediate frequency antenna is connected with the low frequency antenna and used for forming an intermediate frequency loop so as to generate an intermediate frequency. The high-frequency antenna is located beside the medium-frequency antenna and connected with the second grounding end to form a high-frequency loop, a gap is formed between the high-frequency antenna and the medium-frequency antenna, the high-frequency antenna and the medium-frequency antenna are coupled together to form high frequency, and the low-frequency antenna, the medium-frequency antenna and the high-frequency antenna are suitable for being arranged along the shell to form a three-dimensional structure.

In an embodiment of the invention, the housing has a bottom surface, a first side surface and a top surface connected to each other, the low-frequency antenna includes a first section, a second section, a third section and a fourth section connected in a bending manner, the feed-in end is located on the first section and located on the bottom surface, the first section extends from the bottom surface and the first side surface of the housing to the top surface, and the second section and the fourth section are located on the top surface.

In an embodiment of the invention, the second segment and the fourth segment are parallel to each other.

In an embodiment of the invention, the housing further has a second side surface connected to the top surface, and the third section adjustably extends to the second side surface.

In an embodiment of the invention, the low frequency antenna further includes a fifth section connected to the second section and located beside the first section in parallel, and the fifth section extends from the bottom surface and the first side surface of the housing to the top surface.

In an embodiment of the invention, the first ground terminal is on the fifth segment and located on the bottom surface.

In an embodiment of the invention, the if antenna is connected to the second section and located on the top surface.

In an embodiment of the invention, an extending direction of the if antenna is opposite to an extending direction of the second segment.

In an embodiment of the invention, the high-frequency antenna includes a sixth section and a seventh section connected in a bending manner, the sixth section extends from the bottom surface to the first side surface, and an extending direction of the seventh section is the same as an extending direction of the intermediate-frequency antenna.

In an embodiment of the invention, the second ground terminal is on the sixth segment and located on the bottom surface.

In an embodiment of the invention, the low frequency is 824-894 megahertz (MHz), the medium frequency is 1700-1900 MHz, and the high frequency is 2.1-2.17 gigahertz (GHz).

Based on the above, the multi-band antenna module of the present invention has a low-frequency antenna, an intermediate-frequency antenna, and a high-frequency antenna, and the antennas can resonate and couple out multiple frequency bands through a special configuration. In addition, the multi-frequency antenna module is suitable for being arranged along the shell to present a three-dimensional structure, so that the space can be effectively saved, and the antenna performance is good.

Drawings

Fig. 1A is a schematic diagram of a multi-frequency antenna module disposed on a housing according to an embodiment of the invention;

FIG. 1B is a schematic view of another perspective of FIG. 1A;

fig. 2 is a schematic diagram of frequency-return loss of the multi-frequency antenna module of fig. 1A.

Description of the reference numerals

1, low frequency;

2, intermediate frequency;

3, high frequency;

10, a shell;

11, a bottom surface;

12, a first side;

13, a top surface;

14, a second side;

110, a low frequency antenna;

111, a feed-in end;

112, a first section;

113 a second section;

114: a third section;

115: a fourth section;

116, a fifth section;

117 a first ground terminal;

120, an intermediate frequency antenna;

130, high-frequency antenna;

132: a sixth section;

134, seventh section;

136 to a second ground terminal.

Detailed Description

Reference will now be made in detail to exemplary embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings and the description to refer to the same or like parts.

Fig. 1A is a schematic diagram of a multi-frequency antenna module disposed on a housing according to an embodiment of the invention. Fig. 1B is a schematic view of another perspective of fig. 1A.

Referring to fig. 1A and 1B, the multi-frequency antenna module of the present embodiment may be applied to a driving recorder, a Digital Video Recorder (DVR), an Internet of Things (IoT) for a vehicle, or a mobile phone, for example, and may upload information of an electronic device to a cloud system. Of course, the application of the multi-frequency antenna module is not limited thereto.

The multi-frequency antenna module of the present embodiment is adapted to be disposed on the housing 10. In the present embodiment, the multi-band antenna module includes a feeding terminal 111, a first ground terminal 117, a second ground terminal 136, a low-band antenna 110, an intermediate-band antenna 120, and a high-band antenna 130. The low frequency antenna 110, the intermediate frequency antenna 120 and the high frequency antenna 130 may be manufactured by Laser Direct Structuring (LDS), or may be copper foil or copper wire on a flexible printed circuit board, and the forms of the low frequency antenna 110, the intermediate frequency antenna 120 and the high frequency antenna 130 are not limited thereto.

As can be seen from fig. 1A and 1B, the housing 10 has a bottom surface 11, a first side surface 12, a top surface 13, and a second side surface 14 connected together. The bottom surface 11 is, for example, a bottom surface, the first side surface 12 is, for example, a side surface, the top surface 13 is, for example, a top surface, the second side surface 14 is, for example, another side surface, and the second side surface 14 is connected to the top surface 13 and to the first side surface 12, but the positional relationship between the bottom surface 11, the first side surface 12, the top surface 13, and the second side surface 14 is not limited thereto.

In the present embodiment, the shape of the housing 10 is irregular, for example, as shown in fig. 1A, the top surface 13 of the housing 10 is a slope, and as can be seen from fig. 1A and fig. 1B, the bottom surface 11, the first side surface 12 and the top surface 13 are all non-planar. Of course, the shape of the housing 10 is not limited thereto. In an embodiment, the housing 10 may also be a three-dimensional shape with a partial circular arc, or the housing 10 may also be a combination of polygons or a regular shape (such as a common polygon).

Since the size of the electronic product is smaller and smaller, in the embodiment, the low frequency antenna 110, the intermediate frequency antenna 120, and the high frequency antenna 130 of the multi-frequency antenna module are directly disposed on the housing 10 (for example, on the bottom surface 11, the first side surface 12, the top surface 13, and the second side surface 14) along with the shape of the housing 10, so as to reduce the space occupied by the multi-frequency antenna module in the electronic product, and can be well applied to the housing 10 with an irregular shape, thereby providing a good multi-frequency effect.

The low frequency antenna 110, the intermediate frequency antenna 120, and the high frequency antenna 130 of the multi-frequency antenna module of the present embodiment will be described below.

In detail, the low frequency antenna 110 includes a first segment 112, a second segment 113, a third segment 114 and a fourth segment 115 connected in a zigzag manner. As shown in fig. 1B, the feeding end 111 is located on the first segment 112 and is located at the bottom surface 11. With reference to fig. 1A and 1B, the first section 112 extends from the bottom surface 11 and the first side surface 12 of the housing 10 to the top surface 13, and the second section 113 and the fourth section 115 are located on the top surface 13.

In the present embodiment, the second section 113, the third section 114 and the fourth section 115 are shaped like a U, and the second section 113 and the fourth section 115 are parallel to each other. In the present embodiment, the width of the second segment 113 is the same as that of the fourth segment 115, and the width of the second segment 113 and the fourth segment 115 is, for example, 1 cm to 2 cm (for example, 1.5 cm), but not limited thereto. The distance between the second segment 113 and the fourth segment 115 is greater than or equal to about 2 cm, so as to avoid signal interference caused by coupling effect.

In addition, in the present embodiment, the width of the third segment 114 is greater than the widths of the second segment 113 and the fourth segment 115, so that the third segment 114 can be adjustably extended to the second side 14. The width of the third segment 114 can be fine-tuned, if during the testing stage, the designer can adjust the width of the third segment 114 to adjust the frequency band to be resonated out. Thus, in one embodiment, the third segment 114 may not extend to the second side 14.

In addition, in the present embodiment, the low frequency antenna 110 further includes a fifth segment 116 connected to the second segment 113 and located beside the first segment 112 in parallel. The fifth segment 116 is located farther from the high frequency antenna 130 than the first segment 112. The distance between the fifth section 116 and the first section 112 is, for example, 1 cm to 2 cm, but not limited thereto. The fifth section 116 extends from the bottom surface 11, the first side surface 12 to the top surface 13 of the housing 10. The first ground 117 is located on the bottom surface 11 on the fifth segment 116.

In the present embodiment, the low frequency antenna 110 is used to form a low frequency loop to generate a low frequency 1 (shown in fig. 2). The length of the low frequency antenna 110 is, for example, 1/4 wavelengths of low frequency 1. The low frequency 1 is, for example, a low frequency, and the low frequency 1 is, for example, between 0.824GHz and 0.894GHz, but the range of the low frequency 1 is not limited thereto.

On the other hand, the intermediate frequency antenna 120 is connected to the low frequency antenna 110. Intermediate frequency antenna 120 is connected to second segment 113 and is located on top surface 13. In the present embodiment, the width of the if antenna 120 is the same as that of the second segment 113 of the lf antenna 110, and the extending direction of the if antenna 120 is opposite to that of the second segment 113. The if antenna 120 is used to form an if loop to generate an if 2 (shown in fig. 2). The length of the if antenna 120130 is, for example, 1/4 wavelengths of if 2. The intermediate frequency 2 is, for example, an intermediate frequency, and the frequency range is 1.71GHz to 1.99GHz, but the intermediate frequency 2 is not limited thereto.

Furthermore, the high frequency antenna 130 is located beside the low frequency antenna 110 and the medium frequency antenna 120, and is connected to the second ground terminal 136 to form a high frequency loop. The high-frequency antenna 130 includes a sixth segment 132 and a seventh segment 134 connected in a bent manner, and is L-shaped. The sixth section 132 extends from the bottom surface 11 to the first side surface 12, the seventh section 134 is located on the first side surface 12, and the extending direction of the seventh section 134 is the same as the extending direction of the if antenna 120. The second ground terminal 136 is located on the bottom surface 11 and on the sixth section 132. The width of the high-frequency antenna 130 is, for example, 1 cm to 2 cm (for example, 1.5 cm), but is not limited thereto.

The high frequency antenna 130 has a gap between the high frequency antenna 130 and the intermediate frequency antenna 120, the high frequency antenna 130 is used for coupling a high frequency 3 (indicated in fig. 2) together with the intermediate frequency antenna 120, the high frequency 3 is, for example, a high frequency, and the frequency band is 2.1GHz to 2.17GHz, but the high frequency 3 is not limited thereto.

In the embodiment, the low frequency antenna 110, the intermediate frequency antenna 120 and the high frequency antenna 130 are suitable for being configured along the shape of the housing 10 to present a three-dimensional structure, so that the space occupied in the electronic product can be reduced, and the antenna can be well applied to the housing 10 with an irregular shape. In addition, in the present embodiment, the shapes and the arrangement positions of the low frequency antenna 110, the medium frequency antenna 120 and the high frequency antenna 130 can avoid nearby metal objects, so as to avoid interference.

Fig. 2 is a schematic diagram of frequency-return loss of the multi-frequency antenna module of fig. 1A. Referring to fig. 2, in the present embodiment, the multi-band antenna module has good performance at low frequency 1, intermediate frequency 2 and high frequency 3 by the relative position configuration of the low-frequency antenna 110, the intermediate-frequency antenna 120 and the high-frequency antenna 130.

In summary, the multi-band antenna module of the present invention has a low-frequency antenna, an intermediate-frequency antenna, and a high-frequency antenna, and the antennas can resonate and couple out multiple frequency bands through a special configuration). In addition, the multi-frequency antenna module is suitable for being arranged along the shell to present a three-dimensional structure, so that the space can be effectively saved, and the antenna performance is good.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.