TW202007011A - Antenna control module adapted for 5th generation mobile communication - Google Patents

Abstract

An antenna control module adapted for 5^th generation mobile communication comprising a ground, a first capacitor, a first portion, a second capacitor, a second portion, a first diode, a second diode, a first antenna and a second antenna. A protruding portion of the ground is between a first edge and a second edge of the ground. The first portion connects the protruding portion via the first capacitor to form a left-side open-slot. The second portion connects the protruding portion via the second capacitor to form a right-side open-slot. The first diode is connected between the first portion and the first edge with an offset distance away from a first open-end. The second diode is connected between the second portion and the second edge with the offset distance away from a second open-end. The first antenna and the second antenna operating at a first band and a second band are respectively located at a left-side and a right-side of the ground. For the radiation pattern of the second band, the conducted first diode makes the radiation pattern of the first antenna toward the left-side, and the conducted second diode makes the radiation pattern of the second antenna toward the right-side.

Description

The fifth generation mobile communication antenna control module

The invention relates to an antenna technology for fifth-generation mobile communication, and in particular to an antenna technology for a fifth-generation mobile communication antenna control module.

The radiation pattern of the antenna varies according to the basic working principle of the antenna. For example, a dipole antenna can generate an omnidirectional radiation pattern, and a patch antenna can generate a broadside Radiation field pattern. Various radiation field types have different applications. For example, the omnidirectional radiation field type is suitable for the terminal device, so that the terminal device can receive wireless signals in various directions. In contrast, base station antennas, such as wireless access point antennas, may need to generate radiation patterns in specific directions to enable more wireless communication with terminal devices located in various specific locations. Traditionally, multiple antennas can be used, and based on beamforming technology, a specific beam shape can be achieved to achieve the purpose of adjusting the radiation pattern. However, beamforming (Beamforming) technology requires complex algorithms and control circuits, which will relatively increase the cost of the product. Therefore, generally, in order to save costs, an antenna with a specific radiation pattern can be designed corresponding to the application of the wireless electronic device. However, such an antenna designed for specific application requirements cannot be used for other different use requirements. For the high transmission rate requirements of the future fifth-generation mobile communications (5G) and the widespread use of the Internet of Things (Internet of Things), the diversity of antenna radiation field design needs to be further increased accordingly.

An embodiment of the present invention provides a fifth-generation mobile communication antenna control module, which is provided on a substrate. The fifth-generation mobile communication antenna control module includes a ground plane, a first capacitor, a first part, a second capacitor, and a second part , The first diode, the second diode, the first antenna, and the second antenna. The ground plane has a protrusion, a first edge and a second edge, and the protrusion is located between the first edge and the second edge. The first part is connected to the protrusion of the ground plane through the first capacitor, the first part and the first edge of the ground plane form a first open end, and the first part and the first edge are connected to each other by the first capacitor to form a first closure At the end, the first part, the first capacitor and the ground plane together form the left slot. The second part is connected to the protrusion of the ground plane by a second capacitor, the second part and the second edge of the ground plane form a second open end, and the second part and the second edge are connected to each other by the second capacitor to form a second closure At the end, the second part, the second capacitor and the ground plane together form a right-side slot. The first diode is used for receiving the first DC voltage and conducting, and has a first parasitic capacitance. The first diode is connected between the first portion and the first edge, is located between the first open end and the first closed end, and maintains an offset distance from the first open end. The second diode is used for receiving the second DC voltage and conducting, and has a second parasitic capacitance. The second diode is connected between the second portion and the second edge, is located between the second open end and the second closed end, and maintains an offset distance from the second open end. The first antenna is located on the left side of the ground plane. The first antenna operates in the first frequency band and the second frequency band. The frequency of the first frequency band is lower than the second frequency band. The second antenna is located on the right side of the ground plane, and the second antenna operates in the first frequency band and the second frequency band. The radiation pattern of the first antenna when the first diode is on is operating in the second frequency band compared to the radiation pattern of the first antenna when the first diode is not on and operating in the second frequency band Offset to the left, the radiation pattern of the second antenna when the second diode is on is operating in the second frequency band compared to the second antenna when the second diode is off The radiation pattern of is further shifted towards the right.

In summary, the embodiments of the present invention provide a fifth-generation mobile communication antenna control module, which uses capacitors and a switchable state (conducting or non-conducting) of a controllable diode to realize the control of the ground plane current, thereby changing the antenna The radiation field type has high industrial application value.

In order to further understand the features and technical content of the present invention, please refer to the following detailed description and drawings of the present invention, but these descriptions and the drawings are only used to illustrate the present invention, not the rights of the present invention Any restrictions on the scope.

10‧‧‧ substrate

11‧‧‧Ground

12‧‧‧ First capacitor

13‧‧‧Part 1

14‧‧‧Second capacitor

15‧‧‧Part 2

16‧‧‧First Diode

17‧‧‧ Second Diode

18‧‧‧ First antenna

19‧‧‧Second antenna

113‧‧‧Projection

111‧‧‧The first edge

112‧‧‧Second Edge

21‧‧‧First open end

22‧‧‧The first closed end

2‧‧‧Slot on the left

31‧‧‧The second open end

32‧‧‧Second closed end

3‧‧‧Slotted on the right

X, Y, Z‧‧‧ axis

D‧‧‧Offset distance

12a, 14a‧‧‧ auxiliary capacitor

101‧‧‧First surface

181‧‧‧The first short circuit section

182‧‧‧First Feeding Department

191‧‧‧second short circuit section

192‧‧‧Second Feeding Department

102‧‧‧Second surface

183‧‧‧ First Radiation Department

184‧‧‧First Department

185‧‧‧Second Radiation Department

193‧‧‧ Third Radiation Department

194‧‧‧The second penetrating department

195‧‧‧ Fourth Radiation Department

4‧‧‧DC Feeding Department

41‧‧‧First DC feeder

42‧‧‧Second DC feeder

V1‧‧‧First DC voltage

V2‧‧‧Second DC voltage

FIG. 1 is a schematic diagram of a fifth-generation mobile communication antenna control module provided by an embodiment of the present invention.

2A is an X-Z plane radiation pattern of a first antenna provided by an embodiment of the present invention, which operates at 3.5 GHz.

FIG. 2B is an X-Y plane radiation pattern of the first antenna provided by an embodiment of the present invention, which operates at 3.5 GHz.

3A is an X-Z plane radiation pattern of a first antenna provided by an embodiment of the present invention, which operates at 5.5 GHz.

3B is an X-Y plane radiation pattern of the first antenna provided by an embodiment of the present invention, which operates at 5.5 GHz.

4 is a schematic diagram of a first DC feeder and a second DC feeder of a fifth-generation mobile communication antenna control module according to an embodiment of the present invention.

Referring to FIG. 1, this embodiment provides a fifth-generation mobile communication antenna control module, which can be applied to mobile communication devices such as notebook computers, laptop computers, or tablet computers, or other types of Internet of Things devices. The fifth generation mobile communication antenna control module is provided on the substrate 10, such as a microwave substrate. This fifth-generation mobile communication antenna control module includes a ground plane 11, a first capacitor 12, a first part 13, a second capacitor 14, a second part 15, a first diode 16, a second diode 17, a first一 Antenna 18 and the second antenna 19. The ground plane 11 has a protrusion 113, a first edge 111 and a second edge 112, and the protrusion 113 is located between the first edge 111 and the second edge 112. The first portion 13 is connected to the protruding portion 113 of the ground surface 11 through the first capacitor 12. The first portion 13 and the first edge 111 of the ground surface 11 form a first open end 21. The first portion 13 and the first edge 111 are used The first capacitors 12 are connected to each other to form a first closed end 22. Furthermore, the first part 13, the first capacitor 12 and the ground plane 11 together constitute the left-side slot 2. In addition, an auxiliary capacitor 12a is added in FIG. 1 to increase the AC current conducting area (or flow node) between the first portion 13 and the ground plane 11, but the auxiliary capacitor 12a is not used to form the left slot 2. The second portion 15 is connected to the protruding portion 113 of the ground surface 11 through the second capacitor 14. The second portion 15 and the second edge 112 of the ground surface 11 form a second open end 31. The second portion 15 and the second edge 112 are utilized The second capacitors 14 are connected to each other to form a second closed end 32. In addition, the second portion 15, the second capacitor 14 and the ground plane 11 together constitute the right-side slot 3. In addition, an auxiliary capacitor 14a is added in FIG. 1 to increase the AC current conducting area (or flow node) between the second portion 15 and the ground plane 11, but the auxiliary capacitor 14a is not used to form the right slot 2. Preferably, the first edge 111 and the second edge 112 are parallel to each other, but the invention is not limited thereto. On the other hand, preferably, the left slot 2 and the right slot 3 are symmetrical to each other about the axis of symmetry (Z axis) of the ground plane 11, and the first antenna 18 and the second antenna 19 are based on the axis of symmetry of the ground plane 11 (Z axis) appears symmetrical to each other, but the present invention is not so limited.

The first diode 16 is used to receive the first DC voltage V1 (turn-on voltage) for conduction, and has a first parasitic capacitance (which is its own capacitance in the first diode 16, not shown). The first diode 16 is connected between the first portion 13 and the first edge 111, is located between the first open end 21 and the first closed end 22, and maintains an offset distance D from the first open end 21. The second diode 17 is used to receive the second DC voltage V2 (turn-on voltage) for conduction, and has a second parasitic capacitance (which is its own capacitance in the second diode 17, not shown). The second diode 17 is connected between the second portion 15 and the second edge 112, is located between the second open end 31 and the second closed end 32, and maintains an offset distance D from the second open end 31. The first antenna 18 is located on the left side of the ground plane 11. The first antenna 18 operates in a first frequency band and a second frequency band. The frequency of the first frequency band is lower than the second frequency band. The first frequency band is, for example, the 3.5 GHz frequency band, and the second frequency band For example, it is the 6GHz frequency band, but it may also be another frequency band used by the fifth-generation mobile communication standard in the future. The second antenna 19 is located on the right side of the ground plane 11, and the second antenna 19 also operates in the first frequency band and the second frequency band. Preferably, the first antenna 18 and the second antenna 19 use the same design, and the impedance matching that can be achieved is, for example, a voltage standing wave ratio (VSWR) of 2.

Please refer to FIG. 1 again to further explain the details of the embodiments and the structures of the first antenna and the second antenna used. The substrate 10 has a first surface 101, and the ground plane 11, the first capacitor 12, the first portion 13, the second capacitor 14, the second portion 15, the first diode 16 and the second diode 17 are all provided on the first One surface 101. The first antenna 18 has a first short-circuit portion 181 and a first feeding portion 182, the first short-circuit portion 181 is connected to the ground plane 11, wherein, preferably, the first feeding portion 182 is fed in coaxially. The second antenna 19 has a second short-circuit portion 191 and a second feeding portion 192, the second short-circuit portion 191 is connected to the ground plane 11, wherein, preferably, the second feeding portion 192 is fed in coaxially. The substrate 10 further has a second surface 102, and the first antenna 18 has a first radiating portion 183 provided on the first surface 101, a first penetrating portion 184 and a second radiating portion 185 provided on the second surface 102, the penetrating portion 184 The substrate 10 is penetrated to connect the first radiating portion 183 and the second radiating portion 185. The first radiating portion 183 connects the first short-circuiting portion 181 and the first feeding portion 182. The second antenna 191 has a third radiation portion 193 provided on the first surface 101, a second penetration portion 194, and a fourth radiation portion 195 provided on the second surface 102. The penetration portion 184 penetrates the substrate 10 to connect the third radiation portion 193 and the fourth radiation part 195, and the third radiation part 193 connects the second short-circuit part 191 and the second feeding part 192. The structures of the first antenna 18 and the second antenna 19 in FIG. 1 are merely examples for illustration, and are not intended to limit the present invention.

Next, please refer to the radiation field patterns of the first frequency band and the second frequency band in FIGS. 2A to 3B. The radiation field patterns of the first antenna are taken as examples. The radiation field patterns of the second antenna in this embodiment are symmetrical. The radiation pattern of the first antenna. 2A is an X-Z plane radiation pattern of a first antenna provided by an embodiment of the present invention, which operates at 3.5 GHz. FIG. 2B is an X-Y plane radiation pattern of the first antenna provided by an embodiment of the present invention, which operates at 3.5 GHz. 3A is an X-Z plane radiation pattern of a first antenna provided by an embodiment of the present invention, which operates at 5.5 GHz. 3B is an X-Y plane radiation pattern of the first antenna provided by an embodiment of the present invention, which operates at 5.5 GHz. The first diode 16 and the second diode 17 are preferably RF diodes, which mainly control the state of the RF ground current, and are used to change the radiation pattern of the second frequency band. When the first diode 16 is turned on (mode 1), the first antenna 18 operates in the second frequency band (for example, 6 GHz, and the frequency of 5.5 GHz is used as an example) compared with the radiation pattern of the first diode When 16 is not conducting (mode 0), the first antenna 18 operates in the second frequency band (for example, 6 GHz, and the frequency of 5.5 GHz is taken as an example), and the radiation pattern is further shifted toward the left (more toward the positive X axis) ). In detail, when the first diode 16 receives the first DC voltage V1, the first portion 13 is conducted to the first edge 111 via the first diode 16 to shorten the communication between the first portion 13 and the first edge 111 Ground current path. Furthermore, when the first diode 16 is turned on, it compensates for the blocking of the AC ground current caused by the left slot 2, and makes the ground current of the compensated first portion 13 and the protruding portion 113 more obvious. The effect of the radiation pattern shifting to the left (positive X axis).

Analogous to the operation of the first antenna 18, the radiation field pattern control direction of the second antenna 19 is exactly reversed to the radiation field pattern control direction of the first antenna 18. For the second antenna 19, when the second diode 17 is turned on (mode 1), the second antenna 19 operates in the radiation pattern of the second frequency band (for example, 6 GHz) compared to when the second diode 17 When not conducting (mode 0), the radiation pattern of the second antenna 19 operating in the second frequency band (for example, 6 GHz) is further shifted toward the right (more toward the negative X axis). In detail, when the second diode 17 receives the second DC voltage V2, the second portion 15 is connected to the second edge 112 via the second diode 17 to shorten the communication between the second portion 15 and the second edge 112 Ground current path. Furthermore, when the second diode 17 is turned on, it compensates for the blocking of the AC ground current caused by the right slot 3, and makes the ground current of the compensated second portion 15 and the protruding portion 113 more apparently The effect of the radiation pattern shifting to the right (negative X axis).

Please refer to FIG. 4 again. FIG. 4 is a schematic diagram of a first DC feeder and a second DC feeder of a fifth-generation mobile communication antenna control module according to an embodiment of the present invention. 4 is also a schematic back view of the fifth generation mobile communication antenna control module of FIG. 1. The fifth-generation mobile communication antenna control module may further include a DC feeder 4. The DC feeder 4 has a first DC feeder 41 and a second DC feeder 42. The first DC feeder 41 crosses the first capacitor 12 in The orthographic projection position on the substrate 10 connects the first portion 13 and the first DC voltage V1, and the second DC feeder 42 crosses the orthographic projection position of the second capacitor 14 on the substrate 10 to connect the second portion 15 and the second DC voltage V2. Preferably, when the first capacitor 12 and the second capacitor 14 are on the first surface 101, the first DC feed line 41 may be located on the second surface 102 and cross the orthographic position of the first capacitor 12 on the substrate 10, and The substrate 10 is penetrated in a through-hole manner to be connected to the first portion 13. The second DC feed line 42 may be located on the second surface 102 and cross the orthographic projection position of the second capacitor 14 on the substrate 10, and penetrate the substrate 10 in a through-hole manner to be connected to the second portion 15.

In summary, the fifth-generation mobile communication antenna control module provided by the embodiment of the present invention utilizes a capacitor and a switchable state (conducting or non-conducting) of a controllable diode to realize the control of the ground plane current, thereby changing The radiation pattern of the antenna has high industrial application value. In addition, the specially designed wiring design of the first DC feeder and the second DC feeder is used to enhance the accuracy and reliability of the electromagnetic boundary condition control when the antenna is designed in the actual application product, which can prevent the radiation field pattern from being affected by the DC feeder. The wiring method affects the actual application performance of the antenna.

The above is only an embodiment of the present invention, and it is not intended to limit the patent scope of the present invention.

10‧‧‧ substrate

11‧‧‧Ground

12‧‧‧ First capacitor

13‧‧‧Part 1

14‧‧‧Second capacitor

15‧‧‧Part 2

16‧‧‧First Diode

17‧‧‧ Second Diode

18‧‧‧ First antenna

19‧‧‧Second antenna

113‧‧‧Projection

111‧‧‧The first edge

112‧‧‧Second Edge

21‧‧‧First open end

22‧‧‧The first closed end

2‧‧‧Slot on the left

31‧‧‧The second open end

32‧‧‧Second closed end

3‧‧‧Slotted on the right

X, Y, Z‧‧‧ axis

D‧‧‧Offset distance

12a, 14a‧‧‧ auxiliary capacitor

101‧‧‧First surface

181‧‧‧The first short circuit section

182‧‧‧First Feeding Department

191‧‧‧second short circuit section

192‧‧‧Second Feeding Department

102‧‧‧Second surface

183‧‧‧ First Radiation Department

184‧‧‧First Department

185‧‧‧Second Radiation Department

193‧‧‧ Third Radiation Department

194‧‧‧The second penetrating department

195‧‧‧ Fourth Radiation Department

Claims (10)

A fifth-generation mobile communication antenna control module is provided on a substrate and includes: a ground plane with a protrusion, a first edge and a second edge, the protrusion is located on the first edge and the first Between two edges; a first capacitor; a first part, the protruding part of the ground plane is connected by the first capacitor, the first part and the first edge of the ground plane form a first open end , The first part and the first edge are connected to each other by the first capacitor to form a first closed end, the first part, the first capacitor and the ground plane together form a left slot; a second capacitor; A second portion connected to the protruding portion of the ground plane through the second capacitor, the second portion and the second edge of the ground surface forming a second open end, the second portion and the second edge The second capacitor is connected to each other to form a second closed end. The second part, the second capacitor and the ground plane together form a right-side slot; a first diode is used to receive a first DC voltage While conducting, it has a first parasitic capacitance, wherein the first diode is connected between the first portion and the first edge, and is located between the first open end and the first closed end, and is in contact with the The first open end maintains an offset distance; a second diode is used to receive a second DC voltage for conduction, and has a second parasitic capacitance, wherein the second diode is connected to the second part and the Between the second edge and between the second open end and the second closed end and maintaining the offset distance from the second open end; a first antenna is located on a left side of the ground plane, the The first antenna operates in a first frequency band and a second frequency band, the frequency of the first frequency band is lower than the second frequency band; and a second antenna, located on a right side of the ground plane, the second antenna operates In the first frequency band and the second frequency band; wherein, when the first diode is conducting, the radiation pattern of the first antenna operating in the second frequency band is compared to when the first diode is not conducting When the first antenna is operating in the second frequency band, the radiation pattern is further shifted toward the left side, and when the second diode is on, the second antenna is operating in the second frequency band. The radiation pattern of the second antenna operating in the second frequency band is shifted toward the right side when the second diode is not conducting. According to the fifth generation mobile communication antenna control module of claim 1, wherein the left-side slot and the right-side slot are both in-line slots. The fifth-generation mobile communication antenna control module according to claim 1, wherein the left slot and the right slot are symmetrical to each other with a symmetry axis of the ground plane, the first antenna and the second The antennas are symmetrical to each other with the symmetry axis of the ground plane. The fifth generation mobile communication antenna control module according to claim 1, wherein the substrate has a first surface, the ground plane, the first capacitor, the first part, the second capacitor, the second Part, the first diode and the second diode are provided on the first surface, the first antenna has a first short-circuit part and a first feed-in part, the first short-circuit part is connected to the ground plane, The second antenna has a second short-circuit portion and a second feed-in portion, and the second short-circuit portion is connected to the ground plane. According to the fifth generation mobile communication antenna control module of claim 4, wherein the substrate further has a second surface, the first antenna has a first radiating portion provided on the first surface, a first A penetrating portion and a second radiating portion provided on the second surface, the penetrating portion penetrating the substrate to connect the first radiating portion and the second radiating portion, the first radiating portion connecting the first short-circuit portion and the A first feeding part; wherein, the second antenna has a third radiating part provided on the first surface, a second penetrating part and a fourth radiating part provided on the second surface, the penetrating part penetrating the The substrate connects the third radiating portion and the fourth radiating portion, and the third radiating portion connects the second short-circuiting portion and the second feeding portion. The fifth generation mobile communication antenna control module according to claim 1, wherein, when the first diode receives the first DC voltage, the first part is conducted to the first diode The first edge shortens the AC ground current path between the first portion and the first edge; when the second diode receives the second DC voltage, the second portion is conducted to the second diode The second edge shortens the AC ground current path between the second portion and the second edge. The fifth-generation mobile communication antenna control module according to item 6 of the claim, further includes a DC feeder, the DC feeder has a first DC feeder and a second DC feeder, the first DC feeder The current feeder crosses the orthographic position of the first capacitor on the substrate to connect the first portion and the first DC voltage, and the second DC feeder crosses the orthographic position of the second capacitor on the substrate to connect The second part and the second DC voltage. The fifth-generation mobile communication antenna control module according to claim 1, wherein the first frequency band is a 3.5 GHz frequency band. The fifth generation mobile communication antenna control module according to claim 1, wherein the second frequency band is a 6GHz frequency band. The fifth-generation mobile communication antenna control module according to claim 1, wherein the fifth-generation mobile communication antenna control module is applied to a notebook computer, a laptop computer or a tablet computer.

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