Antenna module and electronic device

Abstract

The invention provides an antenna module which comprises an antenna structure, a ground plane and an electromagnetic shielding structure. The antenna structure comprises a radiation part and a feed-in part which are coupled with each other. The ground plane is adjacent to the antenna structure in the width direction of the antenna module. The feed part is coupled between the radiation part and the ground plane. The electromagnetic shielding structure is integrally connected to the ground plane. In addition, an electronic device comprising the antenna module is also provided. The antenna module provided by the invention has good signal transceiving efficiency.

Description

Technical Field

[0001] The present invention relates to an antenna module and an electronic device, and in particular to an antenna module including an electromagnetic shielding portion and an electronic device having the antenna module. Background Art

[0002] With the development and popularization of wireless communication technology, most consumer electronic devices have the function of mobile communication devices. For example, laptop computers are generally equipped with antenna modules for transmitting and receiving wireless signals. However, due to the trend of thin and compact design of laptop computers, the configuration space of antenna modules is limited. Therefore, how to configure an antenna module with good signal transmission and reception performance in a limited space is an important issue in this field. Summary of the invention

[0003] The present invention is directed to an antenna module having good signal receiving and transmitting performance.

[0004] The present invention is directed to an electronic device, the antenna module of which has good signal receiving and transmitting performance.

[0005] According to an embodiment of the present invention, an antenna module includes an antenna structure, a ground plane and an electromagnetic shielding structure. The antenna structure includes a radiating portion and a feeding portion coupled to each other. The ground plane is adjacent to the antenna structure in the width direction of the antenna module. The feeding portion is coupled between the radiating portion and the ground plane. The electromagnetic shielding structure is integrally connected to the ground plane.

[0006] According to an embodiment of the present invention, an electronic device includes a device body and an antenna module. The antenna module is configured in the device body and includes an antenna structure, a ground plane and an electromagnetic shielding structure. The antenna structure includes a radiating portion and a feeding portion coupled to each other. The ground plane is adjacent to the antenna structure in the width direction of the antenna module. The feeding portion is coupled between the radiating portion and the ground plane. The electromagnetic shielding structure is integrally connected to the ground plane.

[0007] In an embodiment according to the present invention, the electromagnetic shielding structure includes an electromagnetic shielding portion, and a gap is provided between the electromagnetic shielding portion and the antenna structure in a length direction of the antenna module.

[0008] In an embodiment according to the present invention, the gap is not less than 1 mm.

[0009] In an embodiment according to the present invention, a width of the electromagnetic shield extending from the ground plane in the width direction is not less than a width of the antenna structure extending from the ground plane in the width direction.

[0010] In an embodiment according to the present invention, the electromagnetic shielding structure includes an electromagnetic shielding portion, and a gap is formed between the electromagnetic shielding portion and the antenna structure in a width direction.

[0011] In an embodiment according to the present invention, the gap is not less than 3 mm.

[0012] In an embodiment according to the present invention, the thickness of the electromagnetic shielding structure in the thickness direction of the antenna module is not less than the thickness of the antenna structure in the thickness direction.

[0013] In an embodiment of the present invention, the antenna module further includes an isolation portion, and the isolation portion is integrally connected to the ground plane.

[0014] In an embodiment according to the present invention, a gap is provided between the isolating portion and the antenna structure in a width direction.

[0015] In an embodiment according to the present invention, the device body is a screen or a housing of a notebook computer.

[0016] In an embodiment of the present invention, the screen has a back cover, and the antenna structure, the ground plane and the electromagnetic shielding structure are directly disposed on the back cover.

[0017] In an embodiment of the present invention, the antenna module further includes a short-circuit portion, the short-circuit portion is connected to the radiation portion, and the ground plane is connected to the short-circuit portion.

[0018] Based on the above, in the antenna module of the present invention, the antenna structure includes an electromagnetic shielding portion. Accordingly, the electromagnetic shielding portion can be used to shield the noise from the mainboard of the electronic device or other noise, thereby preventing the signal receiving and transmitting efficiency of the antenna structure from being reduced due to the interference of the noise. Furthermore, in the antenna module of the present invention, the electromagnetic shielding structure is integrally connected to the ground plane, so that the antenna structure, the ground plane and the electromagnetic shielding structure can be integrally made of a single metal base material, thereby making the structure of the antenna module simple and easy to install on the device body. Accordingly, the manufacturing and assembly cost of the antenna module can be saved, and the antenna module including the electromagnetic shielding structure can be smoothly configured in the limited configuration space of the device body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a partial schematic diagram of an electronic device according to an embodiment of the present invention;

[0020] Figure 2 yes Figure 1 A schematic diagram of an antenna module;

[0021] Figure 3 is a schematic diagram of an antenna module according to another embodiment of the present invention;

[0022] Figure 4 is a schematic diagram of an antenna module according to another embodiment of the present invention;

[0023] Figure 5 is a schematic diagram of an antenna module according to another embodiment of the present invention;

[0024] Figure 6 is a schematic diagram of an antenna module according to another embodiment of the present invention;

[0025] Figure 7 is a schematic diagram of an antenna module according to another embodiment of the present invention;

[0026] Figure 8 is a schematic diagram of an antenna module according to another embodiment of the present invention;

[0027] Fig. 9 yes Figure 1 Return loss diagram of the antenna module. DETAILED DESCRIPTION

[0028] Reference will now be made in detail to exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Whenever possible, the same reference numerals are used in the drawings and the description to refer to the same or like parts.

[0029] Figure 1 FIG. 4 is a partial schematic diagram of an electronic device according to an embodiment of the present invention. Figure 2 yes Figure 1 Please refer to the schematic diagram of the antenna module. Figure 1 and Figure 2 , the electronic device 100 of this embodiment includes a device body 110 and an antenna module 120. The antenna module 120 is configured on the device body 110 and includes an antenna structure 122, a ground plane 124 and an electromagnetic shielding structure 126. The antenna structure 122 includes a radiating portion 1221 and a feeding portion 1222 coupled to each other, and a short-circuit portion 1223. The feeding portion 1222 is coupled between the radiating portion 1221 and the ground plane 124. The "coupling" may be a "direct connection" or an "indirect connection", and the "indirect connection" is, for example, a connection through a cable. Specifically, the feeding portion 1222 is connected to the radiating portion 1221 and the ground plane 124, for example, through a cable.

[0030] The ground plane 124 is adjacent to the antenna structure 122 in the width direction (axial direction Y) of the antenna module 120 and is connected to the short-circuit portion 1223. The electromagnetic shielding structure 126 is connected to the ground plane 124 in an integral manner. Figure 3 FIG. 1 is a schematic diagram of an antenna module according to another embodiment of the present invention. In some embodiments, the antenna structure 122 may be as follows: Figure 3 The illustrated embodiment does not include a short-circuit portion, but the present invention is not limited thereto.

[0031] As described above, in the antenna module 120 of the present embodiment, the antenna structure 122 includes the electromagnetic shielding structure 126. Accordingly, the electromagnetic shielding structure 126 can be used to shield the noise from the mainboard of the electronic device 100 or other noise, so as to prevent the signal receiving and transmitting performance of the antenna structure 122 from being reduced due to the interference of the noise. Further, in the antenna module 120 of the present embodiment, the electromagnetic shielding structure 126 is integrally connected to the ground plane 124 as described above, so that the antenna structure 122, the ground plane 124 and the electromagnetic shielding structure 126 can be integrally made of a single metal base material, thereby making the structure of the antenna module 120 simple and easy to install on the device body 110. Accordingly, the manufacturing and assembly cost of the antenna module 120 can be saved, and the antenna module 120 including the electromagnetic shielding structure 126 can be smoothly configured in the limited configuration space of the device body 100.

[0032] The device body 110 of the present embodiment is, for example, a screen or a housing of a notebook computer. The antenna structure 122, the ground plane 124 and the electromagnetic shielding structure 126 may be as follows: Figure 1 As shown, the antenna module 120 is directly configured on the back cover 112 or the housing (not shown) of the screen. Accordingly, it is not necessary to provide an additional substrate for carrying the antenna structure 122, the ground plane 124 and the electromagnetic shielding structure 126, and the structure of the antenna module 120 can be simplified. In other embodiments, the device body 110 can be other types of electronic devices, and the antenna module 120 can be installed thereon in other ways, and the present invention is not limited to this.

[0033] Please refer to Figure 2 In detail, the electromagnetic shielding structure 126 of this embodiment includes two electromagnetic shielding parts 1261 and 1262. The two electromagnetic shielding parts 1261 and 1262 are connected to each other and bent relative to each other to form an L shape, so as to effectively shield the noise when the noise mainly comes from the right and / or below the antenna module 120. In other embodiments, the configuration of the electromagnetic shielding structure can be adjusted accordingly according to the relative position relationship between the noise source and the antenna module 120, and the present invention is not limited to this.

[0034] Furthermore, there is a gap G1 between the electromagnetic shielding portion 1261 and the antenna structure 122 in the length direction (axial direction X) of the antenna module 120. In order to reduce the size of the antenna module 120, the gap G1 needs to be as small as possible but, for example, not less than 1 mm. Accordingly, the electromagnetic shielding portion 1261 is not too close to the antenna structure 122, so as to avoid excessive capacitance and impedance mismatch due to the electromagnetic shielding portion 1261 being too close to the antenna structure 122. In addition, the width W1 of the electromagnetic shielding portion 1261 extending from the ground plane 124 in the width direction (axial direction Y) is not less than the width W2 of the antenna structure 122 extending from the ground plane 124 in the width direction (axial direction Y). Accordingly, the electromagnetic shielding portion 1261 has a sufficient width to effectively exert a shielding effect.

[0035] On the other hand, there is a gap G2 between the electromagnetic shielding portion 1262 and the antenna structure 122 in the width direction (axial direction Y). In order to reduce the size of the antenna module 120, the gap G2 needs to be as small as possible but not less than 3 mm, for example. Accordingly, the electromagnetic shielding portion 1262 is not too close to the antenna structure 122, so as to avoid excessive inductance and impedance mismatch caused by the electromagnetic shielding portion 1262 connected to the ground plane 124 being too close to the antenna structure 122.

[0036] In addition, if Figure 1 As shown, the thickness T of the electromagnetic shielding structure 126 in the thickness direction (axial direction Z) of the antenna module 120 is not less than the thickness of the antenna structure 122 in the thickness direction (axial direction Z). Accordingly, the electromagnetic shielding structure 126 has sufficient thickness to effectively exert the shielding effect.

[0037] Figure 4 is a schematic diagram of an antenna module according to another embodiment of the present invention. Figure 4 The antenna module 120A is shown with Figure 2 The difference of the antenna module 120 shown is that the antenna module 120A also includes an isolation portion 128. The isolation portion 128 is integrally connected to the ground plane 124, and there is a gap between the isolation portion 128 and the antenna structure 122 in the width direction (axial direction X). The isolation portion 128 and the electromagnetic shielding portion 1261 are, for example, respectively located on opposite sides of the antenna structure 122 in the width direction (axial direction X). The isolation portion 128 is used to provide good isolation between the antenna structure 122 and other antennas of the electronic device 100. The isolation portion 128 is, for example, zigzag and can have a sufficient extension length within a limited space. Specifically, the extension length of the isolation portion 128 is, for example, between one quarter and one half of the signal wavelength corresponding to the antenna structure 122, but the present invention is not limited to this.

[0038] Figure 5 is a schematic diagram of an antenna module according to another embodiment of the present invention. Figure 5 The antenna module 120B is shown with Figure 2 The difference between the antenna module 120 shown is that the electromagnetic shielding structure 126 of the antenna module 120B further includes an electromagnetic shielding portion 1263. The electromagnetic shielding portions 1261 and 1263 are respectively connected to opposite ends of the electromagnetic shielding portion 1262 to perform electromagnetic shielding on opposite sides of the antenna structure 122. The configuration and function of the remaining parts of the antenna module 120B are the same or similar to those of the antenna module 120, and are not described in detail here.

[0039] Figure 6 is a schematic diagram of an antenna module according to another embodiment of the present invention. Figure 6 The antenna module 120C is shown with Figure 5 The difference between the antenna module 120B and the antenna module 120C is that the antenna module 120C further includes an isolation portion 128. The configuration and function of the isolation portion 128 are the same as those of the Figure 4 The isolation portion 128 shown and the configuration and operation of the remaining parts of the antenna module 120C are the same or similar to those of the antenna module 120B, and are not described in detail herein.

[0040] exist Figures 2 to 6 In the embodiment of FIG. 1 , the electromagnetic shielding structure 126 may not include the electromagnetic shielding portion 1262 .

[0041] Figure 7 is a schematic diagram of an antenna module according to another embodiment of the present invention. Figure 7 The antenna module 120D is shown with Figure 2 The difference between the antenna module 120 and the antenna module 120D is that the electromagnetic shielding structure 126 of the antenna module 120D does not include Figure 2 The electromagnetic shielding portion 1261 in.

[0042] Figure 8 is a schematic diagram of an antenna module according to another embodiment of the present invention. Figure 8 The antenna module 120E is shown with Figure 7 The difference between the antenna module 120D and the antenna module 120E is that the antenna module 120E further includes an isolation portion 128. The configuration and function of the isolation portion 128 are the same as those of the Figure 4 The isolation portion 128 shown and the configuration and operation of the remaining parts of the antenna module 120E are the same or similar to those of the antenna module 120D, and are not described in detail herein.

[0043] Fig. 9 yes Figure 1 Return loss diagram of the antenna module. Fig. 9 As shown, the antenna module 120 of the embodiment of the present invention can be well matched to 2.4Ghz, 5Ghz, and 6Ghz modes through the above configuration.

[0044] In summary, in the antenna module of the present invention, the antenna structure includes an electromagnetic shielding portion. Accordingly, the electromagnetic shielding portion can be used to shield the noise from the mainboard of the electronic device or other noise, thereby preventing the signal receiving and transmitting efficiency of the antenna structure from being reduced due to the interference of the noise. Furthermore, in the antenna module of the present invention, the electromagnetic shielding structure is integrally connected to the ground plane, so that the antenna structure, the ground plane and the electromagnetic shielding structure can be integrally made of a single metal base material, thereby making the structure of the antenna module simple and easy to install on the device body. Accordingly, the manufacturing and assembly cost of the antenna module can be saved, and the antenna module including the electromagnetic shielding structure can be smoothly configured in the limited configuration space of the device body.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An antenna module, characterized in that: include: The antenna structure comprises a radiating portion and a feeding portion coupled to each other; a ground plane, adjacent to the antenna structure in the width direction of the antenna module, wherein the feeding portion is coupled between the radiating portion and the ground plane; as well as The electromagnetic shielding structure is integrally connected to the ground plane.

2. The antenna module according to claim 1, characterized in that: The electromagnetic shielding structure includes an electromagnetic shielding portion, and a gap is formed between the electromagnetic shielding portion and the antenna structure in a length direction of the antenna module.

3. The antenna module according to claim 2, characterized in that: The gap is not less than 1 mm.

4. The antenna module according to claim 2, characterized in that: The width of the electromagnetic shield extending from the ground plane in the width direction is not less than the width of the antenna structure extending from the ground plane in the width direction.

5. The antenna module according to claim 1, characterized in that: The electromagnetic shielding structure includes an electromagnetic shielding portion, and a gap is formed between the electromagnetic shielding portion and the antenna structure in the width direction.

6. The antenna module according to claim 5, characterized in that: The gap is not less than 3 mm.

7. The antenna module according to claim 1, characterized in that: The thickness of the electromagnetic shielding structure in the thickness direction of the antenna module is not less than the thickness of the antenna structure in the thickness direction.

8. The antenna module according to claim 1, characterized in that: The invention also includes an isolating portion, wherein the isolating portion is integrally connected to the ground plane.

9. The antenna module according to claim 8, characterized in that: There is a gap between the isolation portion and the antenna structure in the width direction.

10. The antenna module according to claim 1, characterized in that: A short-circuit portion is also included, wherein the short-circuit portion is connected to the radiation portion, and the ground plane is connected to the short-circuit portion.

11. An electronic device comprising: Device body; as well as The antenna module is configured in the device body and includes: The antenna structure comprises a radiating portion and a feeding portion coupled to each other; a ground plane adjacent to the antenna structure in a width direction of the antenna module, wherein the feeding portion is coupled between the radiating portion and the ground plane; and The electromagnetic shielding structure is integrally connected to the ground plane.

12. The electronic device according to claim 11, characterized in that: The electromagnetic shielding structure includes an electromagnetic shielding portion, and a gap is formed between the electromagnetic shielding portion and the antenna structure in a length direction of the antenna module.

13. The electronic device according to claim 12, characterized in that: The gap is not less than 1 mm.

14. The electronic device according to claim 12, characterized in that: The width of the electromagnetic shield extending from the ground plane in the width direction is not less than the width of the antenna structure extending from the ground plane in the width direction.

15. The electronic device according to claim 11, characterized in that: The electromagnetic shielding structure includes an electromagnetic shielding portion, and a gap is formed between the electromagnetic shielding portion and the antenna structure in the width direction.

16. The electronic device according to claim 15, characterized in that: The gap is not less than 3 mm.

17. The electronic device according to claim 11, characterized in that: The thickness of the electromagnetic shielding structure in the thickness direction of the antenna module is not less than the thickness of the antenna structure in the thickness direction.

18. The electronic device according to claim 11, characterized in that: The antenna module further includes an isolation portion, and the isolation portion is integrally connected to the ground plane.

19. The electronic device according to claim 18, characterized in that: There is a gap between the isolation portion and the antenna structure in the width direction.

20. The electronic device according to claim 11, characterized in that: The device body is a screen or a casing of a notebook computer.

21. The electronic device according to claim 20, characterized in that: The screen or the housing has a back cover, and the antenna structure, the ground plane and the electromagnetic shielding structure are directly configured on the back cover.

22. The electronic device according to claim 11, characterized in that: The antenna module further includes a short-circuit portion connected to the radiation portion, and the ground plane is connected to the short-circuit portion.

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