Antenna structure and communication equipment applying same

Abstract

The invention provides an antenna structure and communication equipment using the same. The antenna structure comprises a grounding unit, a first radiation unit and a second radiation unit. The first radiation unit is connected with the grounding unit and comprises a first extension branch knot and a second extension branch knot. The first extension branch extends along a first direction; the second extension branch extends outwards along a second direction substantially perpendicular to the first direction from the first starting end of the first extension branch. The second radiation unit is connected with the grounding unit and comprises a fourth extension branch knot and a fifth extension branch knot. Wherein the fourth extension branch extends along a third direction substantially parallel to the first direction; the fifth extension branch extends outwards along a fourth direction substantially parallel to the second direction from a second starting end of the fourth extension branch. The first starting end and the second starting end are opposite and separated from each other.

Description

Technical Field

[0001] The present disclosure relates to a wireless communication component and device, and more particularly to an antenna structure and a communication device using the same. Background Art

[0002] As electronic technology enters the wireless era, the network transmission of electronic devices, especially portable electronic devices (such as mobile phones, Bluetooth headsets, wireless mice, Bluetooth keyboards, etc.), no longer requires connecting to a network cable. Instead, wireless transmission technologies such as Bluetooth and / or WiFi are used. An access point router (AP) is one of the basic communication devices for wireless network transmission. It can allocate wireless and wired-connected terminals to a subnet, enabling various electronic devices within the subnet to exchange data and achieve wireless network connection sharing in a small area. The wireless signal of the access point router needs to be received and transmitted through an antenna. In order to make the radiation pattern of the antenna better cover the XZ plane, YZ plane, and XY plane simultaneously, an omnidirectional antenna is generally required.

[0003] However, as consumers' demands for the appearance and functions of electronic devices continue to trend towards being thinner, lighter, shorter, and smaller, the available space for each component in the access point router is increasingly compressed, significantly restricting the basic size of the antenna. At the same time, electromagnetic interference between components is becoming more and more serious. In addition, in the operating environment, wireless propagation may be affected by reflection, refraction, or diffraction, resulting in attenuation and multi-path signal loss problems. Therefore, how to design an antenna structure with a better omnidirectional radiation pattern in a compact space and adjust the configuration layout of the antenna in the access point router according to the device space to achieve a multi-band operation design has become one of the important challenges faced by this technical field.

[0004] Therefore, there is a need to provide an advanced antenna structure and a communication device using the same to solve the problems faced by the prior art. Summary of the Invention

[0005] One embodiment of this specification discloses an antenna structure, which includes a grounding unit, a first radiation unit, and a second radiation unit. The first radiation unit is connected to the grounding unit and includes a first extending branch and a second extending branch. Among them, the first extending branch extends along a first direction; the second extending branch extends outward from a first starting end of the first extending branch along a second direction substantially perpendicular to the first direction. The second radiation unit is connected to the grounding unit and includes a fourth extending branch and a fifth extending branch. Among them, the fourth extending branch extends along a third direction substantially parallel to the first direction; the fifth extending branch extends outward from a second starting end of the fourth extending branch along a fourth direction substantially parallel to the second direction. The first starting end and the second starting end are opposite to each other and separated from each other. The third direction is opposite to the first direction; the fourth direction is opposite to the second direction. Description of the Drawings

[0006] To better understand the above and other aspects of this specification, specific embodiments are given below and described in detail in conjunction with the accompanying drawings as follows:

[0007] Figure 1 is a perspective view of an antenna structure according to an embodiment of this specification;

[0008] Figure 2 is a diagram showing the results measured in the X-Y plane, X-Z plane, and Y-Z plane of far-field radiation pattern experiments on the antenna structure of this specification and an existing wire-cut iron antenna using the operating frequency bands of 2G respectively;

[0009] Figure 3 is a perspective view of an antenna structure according to another embodiment of this specification;

[0010] Figure 4 is a diagram showing the results measured in the X-Y plane, X-Z plane, and Y-Z plane of far-field radiation pattern experiments on the antenna structure of this specification and an existing wire-cut iron using the operating frequency bands of 5G respectively;

[0011] Figure 5 is a diagram showing the results measured in the X-Y plane, X-Z plane, and Y-Z plane of far-field radiation pattern experiments on the antenna structure of this specification and an existing wire-cut iron using the operating frequency bands of 6GHz respectively;

[0012] Figure 6 is a perspective view of a partial structure of a communication device constructed by integrating multiple antenna structures according to an embodiment of this specification;

[0013] Figure 7It shows the measurement results on the X-Y plane, X-Z plane, and Y-Z plane respectively for the far-field radiation patterns of four antenna structures operating in the 2G frequency band in a communication device;

[0014] Figure 8 It shows the measurement results on the X-Y plane, X-Z plane, and Y-Z plane respectively for the far-field radiation patterns of four antenna structures operating in the 5G frequency band in a communication device; and

[0015] Figure 9 It shows the measurement results on the X-Y plane, X-Z plane, and Y-Z plane respectively for the far-field radiation patterns of two antenna structures operating in the 6G frequency band in a communication device.

[0016] Figure 10 It is a partial structural sectional view of the communication device 60 obtained along the tangent line C6 of Figure 6 . Description of the Drawings

[0018] 100: Antenna Structure

[0019] 101: Grounding Unit

[0020] 101A: Metal Surface

[0021] 102A: First Extended Branch

[0022] 102B: Second Extended Branch

[0023] 102C: Third Extended Branch

[0024] 102E: First Extended End

[0025] 102S: First Starting End

[0026] 104: First Bent Leg

[0027] 105: Feeding Point

[0028] 106: RF Conductor

[0029] 112: Second Radiation Unit

[0030] 112A: Fourth Extended Branch

[0031] 112B: Fifth Extended Branch

[0032] 112C: Sixth Extended Branch

[0033] 112E: Second Extended End

[0034] 112S: Second Starting End

[0035] 114: Second bending leg

[0036] 114A: Third connecting part

[0037] 114B: Fourth connecting part

[0038] D1: First direction

[0039] D2: Second direction

[0040] D3: Third direction

[0041] D4: Fourth direction

[0042] Θ1: Non - flat (non - 180°) angle

[0043] Θ2: Non - flat (non - 180°) angle

[0044] L1: L - shaped bending structure

[0045] L3: L - shaped bending structure

[0046] L4: L - shaped bending structure Detailed implementation manners

[0047] This specification provides an antenna structure and a communication device using the same. An approximately omnidirectional radiation pattern can be generated through the antenna structure with special extended branches and bending legs, so as to improve the signal reception dead zone. In order to make the above - mentioned embodiments, other purposes, features, and advantages of this specification more obvious and understandable, multiple embodiments are specifically given below and detailed descriptions are made in conjunction with the accompanying drawings.

[0048] Please refer to Figure 1 , Figure 1 is a perspective view of an antenna structure 100 illustrated according to an embodiment of this specification. Among them, the antenna structure 100 includes a ground unit 101, a first radiation unit 102, and a second radiation unit 112. In some embodiments of this specification, the ground unit 101, the first radiation unit 102, and the second radiation unit 112 can be a common - board (integrally formed) structure. For example, in this embodiment, the ground unit 101, the first radiation unit 102, and the second radiation unit 112 of the antenna structure 100 are formed by cutting and folding a same metal plate. Among them, the ground unit 101 can be a metal pad, having a metal surface 101A.

[0049] Among them, the first radiation unit 102 is connected to the grounding unit 101, and the first radiation unit 102 includes a first extension branch 102A, a second extension branch 102B, and a third extension branch 102C. In some embodiments of this specification, the first extension branch 102A, the second extension branch 102B, and the third extension branch 102C can be a bent structure of interconnected metal plates. The first extension branch 102A extends along the first direction D1; the second extension branch 102B extends outward from the first starting end 102S of the first extension branch 102A along the second direction D2 substantially perpendicular to the first direction D1, whereby the first extension branch 102A and the second extension branch 102B together form a bent structure L1 similar to an L shape.

[0050] In this embodiment, the first direction D1 is the direction parallel to the metal surface 101A of the grounding unit 101. The second direction D2 is the direction perpendicular to the metal surface 101A of the grounding unit 101. If the first starting end 102S is used as the origin (0, 0, 0) of the three-dimensional coordinate axis (X, Y, Z), then the metal surface 101A of the grounding unit 101 is parallel to the X-Y plane. The first direction D1 is the direction of the positive X-axis extension. The second direction D2 is the direction of the negative Z-axis extension.

[0051] The third extension branch 102C is connected to the first extension end 102E of the first extension branch 102A away from the first starting end 102S, and the third extension branch 102C and the first extension branch 102A form a non-flat (non-180°) angle Θ1. In this embodiment, the third extension branch 102C is parallel to the metal surface 101A of the grounding unit 101, and extends outward from the first extension end 102E of the first extension branch 102A along the direction perpendicular to the first direction D1 and the second direction D2 (i.e., the direction of the positive Y-axis extension). The non-flat (non-180°) angle Θ1 is 90°. However, in other embodiments, the angle range of the non-flat (non-180°) angle Θ1 can be between about 30° and 90°.

[0052] The first radiation unit 102 is connected to the grounding unit 101 through the first bending leg 104. In some embodiments of this specification, the first bending leg 104 can be a bent structure of a metal plate. For example, in this embodiment, the first bending leg 104 includes a first connecting portion 104A and a second connecting portion 104B. The first connecting portion 104A extends upward from the metal surface 101A of the grounding unit 101 along the direction substantially parallel to the second direction D2 (Z-axis direction); the second connecting portion 104B is substantially perpendicular to the first direction D1 and the second direction D2, and is connected between the first connecting portion 104A and the first starting end 102S of the first extension branch 102A; so that the first connecting portion 104A and the second connecting portion 104B together form another bent structure L2 similar to an L shape.

[0053] The second radiation unit 112 includes a fourth extension section 112A, a fifth extension section 112B, and a sixth extension section 112C. Among them, the fourth extension section 112A, the fifth extension section 112B, and the sixth extension section 112C can be a bent structure of interconnected metal plates. The fourth extension section 112A extends along a third direction D3 that is substantially parallel to the first direction D1; the fifth extension section 112B extends outward from the second starting end 112S of the fourth extension section 112A along a fourth direction D4 that is substantially parallel to the second direction D2. The first starting end 102S is opposite to and separated from the second starting end 112S. The third direction D3 is opposite to the first direction D1; the fourth direction D4 is opposite to the second direction D2, whereby the fourth extension section 112A and the fifth extension section 112B together form a bent structure L3 similar to an L shape.

[0054] Specifically, in this embodiment, the second starting end 112S of the fourth extension section 112A and the first starting end 102S of the first extension section 102A (coordinate origin (0, 0, 0)) are both located on the Z-X plane, and the second starting end 112S is on the negative side of the X-axis and is separated from the first starting end 102S by a distance h (the coordinate of the second starting end 112S is (h, 0, 0)). The fourth extension section 112A extends outward from the second starting end 112S along the negative X-axis extension direction; the fifth extension section 112B extends outward from the second starting end 112S along the positive Z-axis extension direction. Among them, the bent structure L1 formed by the first extension section 102A and the second extension section 102B and the bent structure L3 formed by the fourth extension section 112A and the fifth extension section 112B form a structure similar to a cross shape on the Z-X plane.

[0055] The second radiation unit 112 is also connected to the grounding unit 101 through a second bent leg 114. In some embodiments of this specification, the second bent leg 114 can also be a bent structure of a metal plate, and the second bent leg 114 is substantially parallel to the first bent leg 104. For example, in this embodiment, the second bent leg 114 includes a third connecting portion 114A and a fourth connecting portion 114B. The third connecting portion 114A extends upward from the metal surface 101A of the grounding unit 101 along a direction substantially parallel to the second direction D2; the fourth connecting portion 114B is substantially perpendicular to the second direction D2 and is connected between the third connecting portion 114A and the second starting end 112S of the fourth extension section 112A; so that the third connecting portion 114A and the fourth connecting portion 114B together form another bent structure L4 similar to an L shape.

[0056] The sixth extension segment 112C is connected to the second extension end 112E of the fourth extension segment 112A that is away from the second starting end 112S, and the sixth extension segment 112C and the fourth extension segment 112A form a non-flat (non-180°) angle Θ2. In this embodiment, the sixth extension segment 112C is parallel to the metal surface 101A of the ground unit 101, and extends outward from the second extension end 112E of the fourth extension segment 112A along a direction perpendicular to the first direction D1 and the second direction D2. The non-flat (non-180°) angle Θ2 is 90°. However, in other embodiments, the angle range of the non-flat (non-180°) angle Θ2 can be between about 30° and 90°.

[0057] In addition, the antenna structure 100 further includes a feeding point 105, which is located on the second bending leg 114 and is used for electrically connecting to the RF wire 106 to transmit the RF signal power output by the radio transmitter (not shown) to the antenna structure 100, and the antenna structure 100 radiates it outward in the form of electromagnetic waves; or feeds the electromagnetic wave signal received by the antenna structure 100 to the radio receiver (not shown).

[0058] In the embodiments of this specification, the antenna structure 100 can be an omnidirectional antenna structure. It is used to generate an approximate spherical far-field three-dimensional (3D) radiation pattern. For example, please refer to Figure 2 , Figure 2 which shows the results measured on the X-Y plane, X-Z plane, and Y-Z plane of the far-field radiation pattern experiments of the antenna structure 100 of this specification and the existing wire-cut iron antenna using the operating frequency bands of 2G respectively. The experimental results show that the antenna structure 100 provided by the embodiments of this specification not only has a very wide coverage range of the horizontal radiation pattern 201, which is comparable to the horizontal radiation pattern 211 of the existing wire-cut iron antenna; but also the antenna structure 100 has good broadside radiation, and the radiation patterns 202 and 203 on the X-Z plane and Y-Z plane are better than the horizontal radiation patterns 212 and 213 of the existing wire-cut iron antenna.

[0059] Please refer to Figure 3 , Figure 3 which is a perspective view of the antenna structure 300 illustrated according to another embodiment of this specification. The structure of the antenna structure 300 is generally similar to Figure 1 the antenna structure 100 illustrated, the difference being that the third extension segment 302C in the first radiation unit 302 of the antenna structure 300 and the sixth extension segment 312C in the second radiation unit 312 are not parallel to the metal surface 101A of the ground unit 101.

[0060] In this embodiment, the third extended branch 302C of the first radiation unit 302 and the metal surface 101A of the ground unit 101 form a non-flat (non-180°) angle δ1. The sixth extended branch 312C of the second radiation unit 312 and the metal surface 101A of the ground unit 101 form a non-flat (non-180°) angle δ2. Among them, the non-flat (non-180°) angles δ1 and δ2 can be the same or different, and the angle ranges are both between about 30° and 90°. In this embodiment, the non-flat (non-180°) angles δ1 and δ2 are preferably both 45°.

[0061] By adjusting the dimensions of the respective extended branches of the first radiation unit 102 or 302 and / or the second radiation unit 112 or 312 of the antenna structure 100 or 300, and / or adjusting the magnitudes of the non-flat (non-180°) angles Θ1, Θ2, δ1 and / or δ2, the operating frequency band of the antenna structure 100 or 300 can be adjusted. For example, in some embodiments of this specification, by adjusting the lengths of the respective extended branches of the first radiation unit 102 and / or the second radiation unit 112 of the antenna structure 100, the antenna structure 100 can operate in the 5G frequency band.

[0062] Please refer to Figure 4 , Figure 4 which are respectively the measurement results in the X-Y plane, X-Z plane, and Y-Z plane of the far-field radiation patterns of the antenna structure 100 of this specification and the existing wire-cut iron parts using the operating frequency bands of 5G for far-field radiation pattern experiments. The experimental results show that the far-field radiation patterns 401, 402, and 403 of the antenna structure 100 provided in the embodiments of this specification are all superior to the horizontal radiation patterns 411, 412, and 413 of the existing wire-cut iron part antennas.

[0063] Another example is that in another embodiment of this specification, the antenna structure 300 can be applicable to the operating frequency band of 6G. Please refer to Figure 5 , Figure 5 which are respectively the measurement results in the X-Y plane, X-Z plane, and Y-Z plane of the far-field radiation patterns of the antenna structure 300 and the existing wire-cut iron parts using the operating frequency band of 6 GHz for far-field radiation pattern experiments. The experimental results show that the far-field radiation patterns 501, 502, and 503 of the antenna structure 300 provided in the embodiments of this specification are all superior to the horizontal radiation patterns 511, 512, and 513 of the existing wire-cut iron part antennas.

[0064] In addition, multiple antenna structures 100 and / or antenna structures 300 provided in this specification can be combined to jointly construct a communication device 60 (for example, a wireless router) with the communication circuit 601. Please refer to Figure 6 , Figure 6It is a perspective view of a partial structure of a communication device 60 constructed by integrating multiple antenna structures 100 and / or antenna structures 300 according to an embodiment of this specification. In this embodiment, the communication device 60 includes a circuit board 600, a communication circuit 601, antenna structures 100A, 100B, 100C, and 100D operating in 4 2G or 5G (2G / 5G) frequency bands, and antenna structures 300A and 300B operating in 2 6G frequency bands.

[0065] Among them, the circuit board 600 includes the communication circuit 601 disposed thereon and is connected to 6 antenna structures 100 through 6 radio frequency wires 106 respectively. By adjusting the configuration (e.g., offset configuration) and the spacing distance (e.g., 100 millimeters (mm) apart from each other) of the antenna structures 100A, 100B, 100C, 100D, 300A, and 300B, the respective antenna structures 100A, 100B, 100C, 100D, 300A, and 300B can complement each other to achieve a good three-dimensional radiation pattern, while providing a multi-band operation design. Also, since each of the antenna structures 100A, 100B, 100C, 100D, 300A, and 300B has its own grounding unit 101, the influence of the grounding system of the communication device 60 during operation can be reduced, and there is good isolation between them.

[0066] For example, please refer to Figures 7 to Figure 9 , Figure 7 It shows the measurement results in the X-Y plane, X-Z plane, and Y-Z plane for far-field radiation pattern experiments respectively conducted on 4 antenna structures 100A, 100B, 100C, and 100D operating in the 2G frequency band in the communication device 60. Figure 8 It shows the measurement results in the X-Y plane, X-Z plane, and Y-Z plane for far-field radiation pattern experiments respectively conducted on 4 antenna structures 100A, 100B, 100C, and 100D operating in the 5G frequency band in the communication device 60. Figure 9 It shows the measurement results in the X-Y plane, X-Z plane, and Y-Z plane for far-field radiation pattern experiments respectively conducted on 2 antenna structures 300A and 300B operating in the 6G frequency band in the communication device 60. The experimental results show that the 6 antenna structures 100A, 100B, 100C, 100D, 300A, and 300B operating in different frequency bands (2G / 5G and 6G) in the communication device 60 can complement each other and establish a good three-dimensional radiation pattern.

[0067] In addition, the antenna structures 100A, 100B, 100C, 100D, 300A, and 300B can be integrated with the heat dissipation system of the communication device 60 to provide additional heat dissipation effects. For example, in some embodiments of this specification, the antenna structures 100A, 100B, 100C, 100D, 300A, and 300B are in direct contact with the ground line of the communication circuit 601, which has the effect of providing heat dissipation. In some other embodiments, one of the antenna structures 100A, 100B, 100C, 100D, 300A, and 300B (for example, the antenna structure 100A) can be in contact with the heat dissipation pad 602 of the communication circuit 601 and serve as a heat dissipation fin extending outward from the heat dissipation pad 602. Among them, the heat dissipation pad 602 can also be a heat pipe or a heat dissipation body with a capillary structure.

[0068] For example, please refer to Figure 10 , Figure 10 is a partial structural sectional view of the communication device 60 formed by the tangent C6 along Figure 6 . In this embodiment, the antenna structure 100A is directly installed on the heat dissipation pad 602 of the chip 601A in the communication circuit 601, and directly conducts the waste heat generated during the operation of the chip 601A outward. Another example is that in some embodiments of this specification, the plate structures of the antenna structure 100A and the heat dissipation pad 602 can be integrally formed.

[0069] According to the above embodiments, this specification provides an antenna structure and a communication device using the same. In a common board (integrally formed) structure, a special extended branch and bent pin structure is adopted to form at least two mutually corresponding vertical radiation units, which are commonly connected to the ground unit, thereby generating an approximately omnidirectional field pattern and improving the signal reception dead angle of the antenna. By configuring and integrating multiple antenna structures, a communication device with a good three-dimensional radiation field pattern and a multi-band operation design can be constructed. In some embodiments, the antenna structure can also be integrated with the heat dissipation system in the communication device and serve as a heat dissipation fin extending outward.

[0070] Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various changes and improvements without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be defined by the claims of the present invention.

Claims

1. An antenna structure, characterized in that, Comprising: A grounding unit; A first radiation unit, connected to the grounding unit and comprising: A first extended branch, extending along a first direction; A second extended branch, extending outward from a first starting end of the first extended branch along a second direction substantially perpendicular to the first direction; and A third extended branch, connected to a first extended end of the first extended branch away from the first starting end; and A second radiation unit, connected to the grounding unit and comprising: A fourth extended branch, extending along a third direction substantially parallel to the first direction; and A fifth extended branch, extending outward from a second starting end of the fourth extended branch along a fourth direction substantially parallel to the second direction; A sixth extended branch, connected to a second extended end of the fourth extended branch away from the second starting end; Wherein, the first starting end and the second starting end are opposite to each other and separated; the third direction is opposite to the first direction; the fourth direction is opposite to the second direction.

2. The antenna structure according to claim 1, wherein Wherein the grounding unit has a plane, and the first direction is substantially perpendicular to the plane.

3. The antenna structure according to claim 2, wherein, Wherein the grounding unit, the first radiation unit and the second radiation unit are a common board (integrally formed) structure.

4. The antenna structure according to claim 3, wherein, Further comprising: A first bent pin, connecting the first starting end and the grounding unit; And A second bent pin, connecting the second starting end and the grounding unit; Wherein, the first bent pin is parallel to the second bent pin.

5. The antenna structure according to claim 4, wherein Wherein the first bent pin comprises: A first connecting portion, connecting the plane and substantially parallel to the first direction; and A second connecting portion, connecting the first connecting portion and the first starting end, and substantially perpendicular to the first direction and the second direction.

6. The antenna structure according to claim 3, characterized in that, Further comprising a feeding point, located on the first bent pin for electrically connecting to a radio frequency wire.

7. The antenna structure according to claim 3, characterized in that, Wherein the third extended branch and the first extended branch form a first non-flat (180°) angle; the sixth extended branch and the fourth extended branch form a second non-flat (180°) angle.

8. The antenna structure according to claim 7, wherein Wherein both the first non-flat (180°) angle and the second non-flat (180°) angle are between 30° and 90°.

9. The antenna structure according to claim 3, characterized in that, Wherein the third extended branch and the plane form a third non-flat (180°) angle; the sixth extended branch and the plane form a fourth non-flat (180°) angle.

10. The antenna structure according to claim 9, characterized in that, Wherein both the third non-flat (180°) angle and the fourth non-flat (180°) angle are between 30° and 90°.

11. The antenna structure according to claim 3, wherein Wherein the antenna structure is an omnidirectional antenna structure for generating an approximately spherical far-field (Far-zone Field) three-dimensional (3D) radiation pattern.

12. A communication device, characterized in that, Comprising: A circuit board having a communication circuit; And At least one antenna structure as described in any one of claims 1 to 11, disposed on the circuit board and electrically connected to the communication circuit.

13. The communication device according to claim 12, characterized in that, Further comprising a heat dissipation pad, disposed on the circuit board and in contact with the communication circuit and the grounding unit respectively.

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