CN110212299B - Array antenna module with adjustable element factors - Google Patents

Array antenna module with adjustable element factors Download PDF

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Publication number
CN110212299B
CN110212299B CN201910423658.6A CN201910423658A CN110212299B CN 110212299 B CN110212299 B CN 110212299B CN 201910423658 A CN201910423658 A CN 201910423658A CN 110212299 B CN110212299 B CN 110212299B
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diode
frequency
dual
ground
unit
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CN110212299A (en
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施佑霖
张家豪
颜红方
李荣耀
曾国祯
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Changshu Hongbo Communication Technology Co ltd
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Changshu Hongbo Communication Technology Co ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/48Earthing means; Earth screens; Counterpoises
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00Details of, or arrangements associated with, antennas
    • H01Q1/50Structural association of antennas with earthing switches, lead-in devices or lightning protectors
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q23/00Antennas with active circuits or circuit elements integrated within them or attached to them
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/20Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
    • H01Q5/28Arrangements for establishing polarisation or beam width over two or more different wavebands
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30Arrangements for providing operation on different wavebands
    • H01Q5/307Individual or coupled radiating elements, each element being fed in an unspecified way
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/50Feeding or matching arrangements for broad-band or multi-band operation

Abstract

The invention discloses an array antenna module with adjustable element factors, which comprises a feed-in unit, a first element factor unit, a second element factor unit and a high-frequency shared reflecting part. The first element factor unit comprises a first dual-frequency antenna and a first low-frequency reflecting part, the first dual-frequency antenna is connected with a first feed-in branch of the feed-in unit, and the first low-frequency reflecting part is connected with a first grounding branch through a first diode and grounded. The second element factor unit comprises a second dual-frequency antenna and a second low-frequency reflecting part, the second dual-frequency antenna is connected with a second feed-in branch of the feed-in unit, and the second low-frequency reflecting part is connected with the second grounding branch through a second diode and grounded. The high-frequency shared reflecting part is positioned between the first dual-frequency antenna and the second dual-frequency antenna, is provided with a third diode and a third grounding branch, and is connected with the ground through the third diode and the third grounding branch. Thus, the radiation field pattern can be controlled.

Description

Array antenna module with adjustable element factors
Technical Field
The present invention relates to an array antenna module, and more particularly, to an array antenna module with adjustable element factors.
Background
The radiation pattern of the antenna varies according to the basic operation principle of the antenna, and various radiation patterns have different applications, for example, an omnidirectional radiation pattern is suitable for a terminal device, so that the terminal device can receive wireless signals in various directions. For another example, a base station antenna, such as an antenna of a Wireless Access Point (Wireless Access Point), may need to be able to generate a radiation pattern in a specific direction to enable Wireless communication with terminal devices located in various specific locations.
In general, although the array antenna can be used to control a specific radiation pattern, the control circuit (including switches, phase control and feeding network) of the array antenna introduces more transmission loss problem. Furthermore, the wireless transmission of the existing electronic devices usually requires the function of multi-band transmission, and manufacturers must manufacture wireless modules (including antennas) for multi-band operation. If a design with multiple antennas (arrays) is used, and multi-band operation is combined, such as the requirement for operation in the 2.4GHz band and the 5GHz band, which are frequently used in wlan, the selection of multiple switches and multiple feed networks used in the conventional array antenna design not only needs to consider the problem of transmission loss, but also needs to consider the impedance influence characteristics of the feed network on different frequency bands when the feed network is operated in multiple frequencies (or dual frequencies), especially under the situation that the antenna in the existing electronic device is required to be thin and light, the circuit area of the feed network providing the dual frequency operation is quite large (may be larger than the antenna array, and thus the whole volume of the antenna array module is difficult to be reduced), so that the use of a conventional antenna array requires a complicated feeding network to implement dual-frequency (or multi-frequency) operation, which results in a significant increase in the manufacturing cost of the antenna array product.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide an array antenna module with adjustable element factors, which utilizes a technical means of changing element factors to control a radiation pattern, thereby solving the cost problem caused by a dual-band feed network.
The technical scheme of the invention is as follows: an adjustable element factor array antenna module, comprising:
a feeding unit having a feeding end, a first feeding branch and a second feeding branch;
a first element factor unit including a first dual-band antenna and a first low-frequency reflection portion, wherein the first dual-band antenna is connected to the first feeding branch, the first low-frequency reflection portion has a first diode and a first grounding branch, and the first low-frequency reflection portion is connected to the ground through the first diode and the first grounding branch;
a second element factor unit including a second dual-band antenna and a second low-frequency reflection portion, wherein the second dual-band antenna is connected to the second feeding branch, wherein the second low-frequency reflection portion has a second diode and a second grounding branch, and the second low-frequency reflection portion is connected to the ground through the second diode and the second grounding branch, wherein the first dual-band antenna is located between the second dual-band antenna and the first low-frequency reflection portion, and the second dual-band antenna is located between the first dual-band antenna and the second low-frequency reflection portion; and
and a high-frequency common reflection unit located between the first dual-band antenna of the first element unit and the second dual-band antenna of the second element unit, the high-frequency common reflection unit having a third diode and a third ground branch, the high-frequency common reflection unit being connected to the ground via the third diode and the third ground branch.
Further, when the first diode is turned on, the first low frequency reflection part is turned on to the ground through the first diode to constitute a half-wavelength reflector with the ground, and when the first diode is not turned on, the first ground branch extends a ground path of the first low frequency reflection part; wherein when the second diode is turned on, the second low frequency reflection part is turned on to the ground through the second diode to constitute a half-wavelength reflector with the ground, and when the second diode is not turned on, the second ground branch extends a ground path of the second low frequency reflection part.
Further, when the third diode is conducted, the high-frequency common reflection part is conducted to the ground through the third diode to form a half-wavelength reflector with the ground; when the third diode is not conducting, the reflection effect is reduced.
Further, the first dual-band antenna and the second dual-band antenna are both configured to generate resonant modes of a first frequency band and a second frequency band, the first frequency band is a 2.4GHz frequency band, and the second frequency band is a 5GHz frequency band.
Furthermore, the array antenna module of the adjustable element factor is disposed on a double-sided microwave substrate, the feeding unit, the first dual-band antenna, and the second dual-band antenna are disposed on a first surface of the double-sided microwave substrate, the first low-frequency reflection portion, the second low-frequency reflection portion, and the high-frequency common reflection portion are disposed on a second surface of the double-sided microwave substrate, wherein the ground is disposed on the second surface of the double-sided microwave substrate, and the feeding end of the feeding unit is configured to feed in a radio frequency signal.
Furthermore, the first dual-band antenna further has a first ground terminal, the second dual-band antenna further has a second ground terminal, and the first ground terminal and the second ground terminal are both used for connecting the ground on the second surface of the dual-surface microwave substrate by a through hole.
Furthermore, the first diode, the second diode and the third diode are surface mount components mounted on the second surface of the double-sided microwave substrate.
Further, the first feed-in branch and the second feed-in branch are connected in parallel, the first feed-in branch is used for forming a 100 ohm transmission line, and the second feed-in branch is used for forming a 100 ohm transmission line.
Further, the high-frequency common reflection portion has an axis of symmetry, and the first and second prime factor units are symmetrical to each other according to the axis of symmetry.
Furthermore, the array antenna module of the adjustable element factor is used for an electronic device, the electronic device comprises a wireless chip, an application unit and a control unit, and the feed-in end of the feed-in unit is connected with the wireless chip; the application unit is connected with the wireless chip, and the wireless chip receives the received signal strength indication or the received data rate of the array antenna module with the adjustable element factors; the control unit is connected with the application unit, the first diode, the second diode and the third diode, and is controlled by the application unit to control the conduction states of the first diode, the second diode and the third diode so as to control the radiation field pattern of the array antenna module with the adjustable element factor.
The technical scheme provided by the invention has the advantages that the array antenna module does not need to use a complex dual-frequency feed-in network under the requirement of dual-frequency operation by using the technical means of changing the element factors, so that the purpose of radiation pattern control and the reduction of manufacturing cost can be simultaneously achieved, the control circuit is easy to realize, and the industrial application value is very high. And the control of the array antenna module does not need to depend on a wireless chip, and only the control unit of the array antenna module executes the antenna state control, so that the application range of the product can be increased.
Drawings
Fig. 1 is a schematic front view of a structure of an array antenna module with adjustable element factors according to an embodiment of the present invention.
Fig. 2 is a schematic back view of a structure of an array antenna module with adjustable element factors according to an embodiment of the present invention.
Fig. 3 is a perspective view of an array antenna module with adjustable element factors according to an embodiment of the invention.
Fig. 4 is a diagram of a 2.4GHz radiation pattern with a tunable element factor according to an embodiment of the present invention operating in a mode zero.
FIG. 5 is a diagram of a 2.4GHz radiation pattern with adjustable element factors for an array antenna module operating in mode zero and one according to an embodiment of the present invention.
FIG. 6 is a diagram of a 2.4GHz radiation pattern with adjustable element factors for an array antenna module operating in a mode of one zero according to an embodiment of the present invention.
FIG. 7 is a diagram of the 2.4GHz radiation field of the tunable element factor array antenna module according to the embodiment of the present invention operating in one of the modes.
Fig. 8 is a diagram of a 5.5GHz radiation field when the third diode of the array antenna module with adjustable element factors according to the embodiment of the invention is turned on.
Fig. 9 is a diagram of a 5.5GHz radiation field when the third diode of the array antenna module with adjustable element factors is not conducting according to the embodiment of the invention.
Fig. 10 is a functional block diagram of an electronic device to which the array antenna module with adjustable element factors according to an embodiment of the invention is applied.
Detailed Description
The present invention is further illustrated by the following examples, which are not to be construed as limiting the invention thereto.
Referring to fig. 1, 2 and 3, the adjustable element factor array antenna module includes a feeding unit 4, a first element factor unit 1, a second element factor unit 2 and a high frequency common reflection unit 3. The feeding unit 4 has a feeding end 43, a first feeding branch 41 and a second feeding branch 42. The first element factor unit 1 includes a first dual-band antenna 11 and a first low-frequency reflection portion 12, wherein the first dual-band antenna 11 is connected to the first feeding branch 41, wherein the first low-frequency reflection portion 12 further includes a first diode 122 and a first grounding branch 123 except the reflection body 121, and the first low-frequency reflection portion 12 is connected to the ground 5 through the first diode 122 and the first grounding branch 123. The second element factor unit 2 includes a second dual-band antenna 21 and a second low-frequency reflector 22, wherein the second dual-band antenna 21 is connected to the second feeding branch 42, wherein the second low-frequency reflector 22 further includes a second diode 222 and a second grounding branch 223 in addition to the reflector 221, the second low-frequency reflector 22 is connected to the ground 5 through the second diode 222 and the second grounding branch 223, wherein the first dual-band antenna 11 is located between the second dual-band antenna 21 and the first low-frequency reflector 12, and the second dual-band antenna 21 is located between the first dual-band antenna 11 and the second low-frequency reflector 22. The high-frequency common reflection unit 3 is located between the first dual-frequency antenna 11 of the first element unit 1 and the second dual-frequency antenna 21 of the second element unit 2, the high-frequency common reflection unit 3 further includes a third diode 32 and a third ground branch 33 in addition to the reflection body 31, and the high-frequency common reflection unit 3 is connected to the ground 5 through the third diode 32 and the third ground branch 33. The first dual-band antenna 11 and the second dual-band antenna 21 are both configured to generate resonant modes of a first frequency band and a second frequency band, the first frequency band is a 2.4GHz frequency band, and the second frequency band is a 5GHz frequency band (e.g. a WiFi frequency band), but the invention is not limited thereto.
Specifically, the array antenna module with adjustable element factors of the present embodiment is disposed on the double-sided microwave substrate 6, and the feeding unit 4, the first dual-band antenna 11 and the second dual-band antenna 21 are disposed on the first surface 61 of the double-sided microwave substrate 6, the first low-frequency reflection portion 12, the second low-frequency reflection portion 22 and the high-frequency common reflection portion 3 are disposed on the second surface 62 of the double-sided microwave substrate 6, wherein the ground 5 is disposed on the second surface 62 of the double-sided microwave substrate 6, and the feeding end 43 of the feeding unit 4 is used for feeding rf signals. The first feeding branch 41 and the second feeding branch 42 are connected in parallel, the first feeding branch 41 is used for forming a 100 ohm transmission line, and the second feeding branch 42 is used for forming a 100 ohm transmission line. Therefore, the input impedance formed by the parallel first feeding branch 41 and the parallel second feeding branch 42 is 50 ohms. In the present embodiment, the first dual-band antenna 11 further has a first ground 111, the second dual-band antenna 21 further has a second ground 211, and both the first ground 111 and the second ground 211 are used to connect the ground 5 on the second surface 62 of the double-sided microwave substrate 6 by a through hole method. The first dual band antenna 11 and the second dual band antenna 21 are, for example, Planar Inverted F Antennas (PIFAs), but are not limited thereto, and may be replaced by other antenna forms. The first diode 122, the second diode 222 and the third diode 32 are surface mount devices mounted on the second surface 62 of the double-sided microwave substrate 6.
Based on the above embodiment, alternatively, the first low-frequency reflecting part 12 and the second low-frequency reflecting part 22 may be located on the first surface 61 of the double-sided microwave substrate 6 instead, so that the first dual-frequency antenna 11, the second dual-frequency antenna 21, the first low-frequency reflecting part 12 and the second low-frequency reflecting part 22 are located on the same surface (the first surface 61), and the high-frequency common reflecting part 3 is located on the other surface (the second surface 62), but the invention is not limited thereto. The double-sided microwave substrate 6 may also be replaced by a multilayer board, or the first dual-band antenna 11, the second dual-band antenna 21, the first low-frequency reflecting part 12, the second low-frequency reflecting part 22, and the high-frequency common reflecting part 3 are all on the same surface (e.g., the first surface 61), but the grounding path needs to be modified (e.g., connected in a cross-line manner to solve the problem of line overlapping). Further, preferably, the high-frequency common reflection portion 3 has a symmetry axis S, and the first element factor unit 1 and the second element factor unit 2 are symmetrical to each other according to the symmetry axis S. In other words, based on the symmetry axis S, the high-frequency common reflection unit 3 has symmetry, and the first element factor unit 1 and the second element factor unit 2 are also symmetrical to each other, i.e., the first dual-band antenna 11 and the second dual-band antenna 21 are symmetrical to each other, and the first low-frequency reflection unit 12 and the second low-frequency reflection unit 22 are symmetrical to each other. The following embodiments of radiation pattern control are exemplified by the situation of the above symmetrical structure, but the present invention is not limited thereto.
In the array antenna module, the array antenna is a structure of a 1 × 2 array antenna, and the radiation pattern is obtained by multiplying an element factor (element factor) by an array factor (array factor), the array factor is determined when the distance between the feed-in unit 4 of the array antenna and the antenna is completed, and the radiation pattern is changed by changing the element factor, that is, changing the respective radiation patterns of the first element factor unit 1 and the second element factor unit 2. For the low-frequency band radiation pattern control, when the first diode 122 is turned on, the first low-frequency reflecting part 12 is turned on to the ground 5 through the first diode 122 to form a half-wavelength reflector with the ground 5; when the first diode 122 is not turned on, the first ground branch 123 extends the ground path of the first low frequency reflection part 12 to reduce the reflection effect. When the second diode 222 is turned on, the second low frequency reflection part 22 is turned on to the ground 5 through the second diode 222 to constitute a half-wavelength reflector with the ground 5; when the second diode 222 is not turned on, the second ground branch 223 extends the ground path of the second low frequency reflection part 22 to reduce the reflection effect. The first diode 122, the second diode 222 and the third diode 32 are controlled by the control signal to determine the conducting state. For a radiation pattern of a low frequency band (e.g., 2.4GHz band), the first diode 122 and the second diode 222 are controlled to generate four operation states: mode zero (Mode 00), Mode zero one (Mode 01), Mode one zero (Mode 10) and Mode one (Mode 11). The conduction state of the third diode 32 is controlled for the radiation pattern of the high frequency band (e.g., 5GHz band). Referring to fig. 1 and 2 together, the dc control lines for transmitting the control signals to the first diode 122, the second diode 222 and the third diode 32 are omitted in fig. 1 and 2, wherein the first diode 122 and the second diode 222 are preferably connected to a radio frequency Choke (RF Choke). Next, referring to fig. 4, fig. 5, fig. 6 and fig. 7, for the low band radiation pattern control, the Mode zero (Mode 00) is that neither the first diode 122 nor the second diode 222 is conducted, resulting in the radiation pattern as shown in fig. 4. Mode zero one (Mode 01) is when the first diode 122 is non-conducting and the second diode 222 is conducting, as shown in fig. 5 where the radiation pattern is shifted negatively toward the X-axis. Mode one zero (Mode 10) is when the first diode 122 is conducting and the second diode 222 is not conducting, as shown in fig. 6 where the radiation pattern is shifted forward toward the X-axis. Mode one (Mode 11) is when both the first diode 122 and the second diode 222 are conducting, as shown in fig. 7, which shows the gain increase in the Y-axis (compared to the three modes described above). Referring to fig. 8 and 9, for the high-frequency band radiation pattern control, when the third diode is turned on 32, the high-frequency common reflection part 3 is turned on to the ground 5 through the third diode 32 to form a half-wavelength reflector with the ground 5, as shown in fig. 8, the gain on the Y-axis is stronger. When the third diode 32 is not turned on, the high-frequency common reflection unit 3 is connected to the ground 5 through the dc control line of the third diode 32 to reduce the reflection effect, thereby generating the radiation pattern as shown in fig. 9. Alternatively, a radio frequency Choke (RF Choke) is connected to the dc control line of the third diode 32 so that the high-frequency common reflection unit 3 is not connected to the ground 5 when the third diode 32 is not conductive, thereby reducing the reflection effect.
Next, the array antenna module with adjustable element factors of the foregoing embodiment can be applied to an electronic device 7, please refer to the functional block diagram of fig. 10. The embodiment provides an electronic device 7 with an array antenna module 71 having adjustable element factors, which includes a wireless chip 72, an application unit 73 and a control unit 74. Referring to the foregoing embodiment of the tunable element factor array antenna module 7, the feeding end 43 of the tunable element factor array antenna module 71 is connected to the wireless chip 72 of the electronic device 7. The application unit 73 is connected to the wireless chip 72, and receives the Received Signal Strength Indication (RSSI) or the received data rate (data rate) of the array antenna module 71 with adjustable element factors from the wireless chip 72. The control unit 74 is connected to the application unit 73, the first diode 122, the second diode 222 and the third diode 32, and the control unit 74 is controlled by the application unit 73 to control the conduction states of the first diode 122, the second diode 222 and the third diode 32 so as to control the radiation pattern of the array antenna module 71 with adjustable element factors. The application unit 73 may comprise software of an application layer of an operating system of the electronic device 7, and the application unit 73 comprises an algorithm for controlling a radiation pattern (a received signal strength indication or a received data rate of the array antenna module 71 based on the adjustable element factor) to control the control unit 74. The operation of the algorithm of the application unit 73 can be separated from the operation of the wireless chip 72, so that the wireless chip 72 does not need to be responsible for controlling the array antenna module 71 of the adjustable element factor, and the antenna control is independent of the wireless chip 72, thereby reducing the design cost of the wireless chip 72. Therefore, in the application at the product level, the wireless chip 72 may use a general-purpose chip, and only the application unit 73 needs to be modified (or the control unit 74 is modified when the first diode 122, the second diode 222 and the third diode 32 are also modified) when the design of the array antenna module 71 with adjustable element factors is changed. The electronic device 7 is, for example, a notebook computer, a laptop computer, a tablet computer, an all-in-one computer, a smart television, a small base station, or a wireless router, but the invention is not limited thereto.
In summary, the array antenna module with adjustable element factors provided in the embodiments of the present invention utilizes the technical means of changing the element factors to make the array antenna module not need to use a complex dual-frequency feed network under the requirement of dual-frequency operation, so that the purpose of radiation pattern control and the reduction of manufacturing cost can be achieved at the same time, and the control circuit is easy to implement, and has a very high industrial application value. And the control of the array antenna module does not need to depend on a wireless chip, and only the control unit of the array antenna module executes the antenna state control, so that the application range of the product can be increased.

Claims (9)

1. An adjustable element factor array antenna module, comprising:
a feeding unit having a feeding end, a first feeding branch and a second feeding branch;
a first element factor unit including a first dual-band antenna and a first low-frequency reflection portion, wherein the first dual-band antenna is connected to the first feeding branch, the first low-frequency reflection portion has a first diode and a first grounding branch, and the first low-frequency reflection portion is connected to the ground through the first diode and the first grounding branch;
a second element factor unit including a second dual-band antenna and a second low-frequency reflection portion, wherein the second dual-band antenna is connected to the second feeding branch, wherein the second low-frequency reflection portion has a second diode and a second grounding branch, and the second low-frequency reflection portion is connected to the ground through the second diode and the second grounding branch, wherein the first dual-band antenna is located between the second dual-band antenna and the first low-frequency reflection portion, and the second dual-band antenna is located between the first dual-band antenna and the second low-frequency reflection portion; and
a high-frequency common reflection unit located between the first dual-band antenna of the first element unit and the second dual-band antenna of the second element unit, having a third diode and a third ground branch, the high-frequency common reflection unit being connected to the ground via the third diode and the third ground branch;
when the first diode is conducted, the first low-frequency reflecting part is conducted to the ground through the first diode to form a half-wavelength reflector with the ground, and when the first diode is not conducted, the first ground branch prolongs a ground path of the first low-frequency reflecting part; wherein when the second diode is turned on, the second low frequency reflection part is turned on to the ground through the second diode to constitute a half-wavelength reflector with the ground, and when the second diode is not turned on, the second ground branch extends a ground path of the second low frequency reflection part.
2. The adjustable element factor array antenna module as recited in claim 1, wherein when the third diode is turned on, the high frequency common reflection portion is turned on to the ground through the third diode to form a half-wavelength reflector with the ground; when the third diode is not conducting, the reflection effect is reduced.
3. The adjustable element factor array antenna module as claimed in claim 1, wherein the first dual band antenna and the second dual band antenna are both configured to generate resonant modes of a first frequency band and a second frequency band, the first frequency band is a 2.4GHz band, and the second frequency band is a 5GHz band.
4. The dff array antenna module as claimed in claim 1, wherein the dff array antenna module is disposed on a double-sided microwave substrate, the feeding unit, the first dual-band antenna and the second dual-band antenna are disposed on a first surface of the double-sided microwave substrate, the first low-frequency reflection portion, the second low-frequency reflection portion and the high-frequency common reflection portion are disposed on a second surface of the double-sided microwave substrate, the ground is disposed on the second surface of the double-sided microwave substrate, and the feeding end of the feeding unit is configured to feed rf signals.
5. The adjustable element factor array antenna module as recited in claim 4, wherein the first dual-band antenna further comprises a first ground, the second dual-band antenna further comprises a second ground, and the first ground and the second ground are both configured to be connected to the ground on the second surface of the dual-sided microwave substrate by a via.
6. The adjustable element factor array antenna module as recited in claim 4, wherein the first diode, the second diode and the third diode are surface mount devices mounted on the second surface of the double-sided microwave substrate.
7. The adjustable element factor array antenna module as recited in claim 1, wherein the first feeding branch and the second feeding branch are connected in parallel, the first feeding branch is configured to form a 100 ohm transmission line, and the second feeding branch is configured to form a 100 ohm transmission line.
8. The adjustable element factor array antenna module as claimed in claim 1, wherein the high frequency common reflection portion has a symmetry axis, and the first element factor unit and the second element factor unit are symmetrical to each other according to the symmetry axis.
9. The adjustable element factor array antenna module as claimed in claim 1, wherein the adjustable element factor array antenna module is used in an electronic device, the electronic device comprises a wireless chip, an application unit and a control unit, the feeding end of the feeding unit is connected to the wireless chip; the application unit is connected with the wireless chip, and the wireless chip receives the received signal strength indication or the received data rate of the array antenna module with the adjustable element factors; the control unit is connected with the application unit, the first diode, the second diode and the third diode, and is controlled by the application unit to control the conduction states of the first diode, the second diode and the third diode so as to control the radiation field pattern of the array antenna module with the adjustable element factor.
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