WO2020124424A1

WO2020124424A1 - Array antenna structure and electronic device

Info

Publication number: WO2020124424A1
Application number: PCT/CN2018/122040
Authority: WO
Inventors: 彭杰; 王伟锋; 黄洁
Original assignee: 华为技术有限公司
Priority date: 2018-12-19
Filing date: 2018-12-19
Publication date: 2020-06-25

Abstract

Disclosed is an array antenna structure. The array antenna structure in the embodiments of the present application comprises: a radiation component, a phase shifting component, and a feed component; the phase shifting component comprises a phase shifting layer, a phase shifter driving circuit, a phase shifter control interface, a PCB-to-waveguide conversion device, a phase shifter, and a waveguide-to-PCB conversion power distribution device; the phase shifting layer consists of a PCB structure; the phase shifting layer is connected with the phase shifter driving circuit, the phase shifter control interface, the PCB-to-waveguide conversion device, the phase shifter, and the waveguide-to-PCB conversion power distribution device; the phase shifter driving circuit is connected with the phase shifter control interface; one end of the PCB-to-waveguide conversion device is connected with the signal transmission interface of the phase shifter; the other end of the PCB-to-waveguide conversion device is connected with the radiation component; the signal transmission interface of the phase shifter is connected with one end of the waveguide-to-PCB conversion power distribution device; the other end of the waveguide-to-PCB conversion power distribution device is connected with the feed component.

Description

Array antenna structure and electronic equipment

Technical field

The present application relates to the technical field of antennas, in particular to an array antenna structure and electronic equipment.

Background technique

In the field of wireless communication, in order to obtain sufficient signal coverage and fast tracking of the signal stability and signal strength through the beam, the antenna of the communication device usually has a beam shaping function and a beam scanning function.

Currently, a passive phased array antenna scheme is adopted. The passive phased array antenna includes three parts: an antenna radiation array, a phase shifter component, and a feeding network. For example, when transmitting a signal, the signal is input to the feed network, and the feed network distributes the transmitted signal to the phase shifter component, and then radiates it from the antenna radiation array. The phase configuration of the phase shifter component makes the antenna radiation array to different beams Direction.

However, because the antenna radiation array, the phase shifter component and the feed network are separate components, the antenna radiation array, the phase shifter component and the feed network need to be manually assembled into a whole before they can be used, resulting in manual work before using the array antenna Assembly, resulting in a complicated process.

Summary of the invention

The embodiments of the present application provide an array antenna structure and electronic equipment, which are used to provide an assembly-free array antenna structure without secondary assembly, reducing the complexity of the use process.

A first aspect of an embodiment of the present application provides an array antenna structure, the array antenna structure includes a radiation component, a phase shift component, and a feed component; the phase shift component includes a phase shift layer, a phase shifter drive circuit, and a phase shifter control interface Printed circuit board (PCB) transfer waveguide device, phase shifter and waveguide transfer PCB power distribution device, the phase shift layer is composed of PCB structure; the phase shift layer is connected to the phase shifter drive circuit, phase shift Control interface, PCB-to-waveguide device, phase shifter, and waveguide-to-PCB power distribution device; wherein, the phase-shifter drive circuit is connected to the phase-shifter control interface, and one end of the PCB-to-waveguide device is connected to the phase-shifter The signal transmission interface is connected, the other end of the PCB-to-waveguide device is connected to the radiation component, the signal transmission interface of the phase shifter is connected to one end of the waveguide-to-PCB power distribution device; the other end of the waveguide-to-PCB power distribution device is The feed assembly is connected. As can be seen from the first aspect, in this embodiment, the components such as the phase shifter are all integrated on the phase shifting layer, that is, the PCB board, and then the phase shifting component is integrated with the radiation component and the feeding component into a whole. When the array antenna is used, no secondary assembly is required, and the use process is relatively simple.

In a possible implementation, the radiation component may include at least two antenna sub-arrays; the feed component includes a metal waveguide transmission device and a waveguide power distribution feed network, and the waveguide power distribution feed network and the metal waveguide transmission device Connected together, the waveguide power distribution feed network is connected to the other end of the waveguide-to-PCB power distribution device. In this possible implementation manner, a specific connection relationship between different components of the array antenna is provided, and in practical applications, the feasibility of the solution is improved.

In another possible implementation, the PCB-to-waveguide device may include a microstrip-to-waveguide device or a fin-to-waveguide device. In this possible implementation manner, two possible implementation manners of the PCB-to-waveguide device are provided, and in practical applications, the diversity and practicability of the scheme are improved.

In another possible implementation manner, the at least two antenna sub-arrays may include waveguide slot antennas or microstrip antennas. In this possible implementation, two optional antenna types used in the antenna sub-array are provided, which improves the realizability and diversity of the solutions.

In another possible implementation manner, the feeding method of the at least two antenna sub-arrays may include a terminal feeding method or a center feeding method. In this possible implementation, two possible feeding methods in the antenna sub-array are provided, and in practical applications, the diversity of solutions is improved.

In another possible implementation, the waveguide-to-PCB power distribution device may include a waveguide-to-microstrip power distribution device or a waveguide-to-fin power distribution device. In this possible implementation manner, two possible implementation manners of the waveguide-to-PCB power distribution device are provided, and in practical applications, the diversity and practicality of the scheme are improved.

In another possible implementation manner, the waveguide-to-microstrip power distribution device includes a microstrip line and a waveguide ridge, the microstrip line and the dumbbell-shaped waveguide port of the waveguide ridge cross-overlap, the waveguide ridge and the waveguide power distribution Feeding network connection. In this possible implementation, a specific structure of a waveguide-to-microstrip power distribution device is provided, which improves the achievability of the solution.

In another possible implementation, the waveguide-to-fin power distribution device includes a fin line and a waveguide ridge, the fin line is connected to the waveguide ridge, and the waveguide ridge is connected to the waveguide power distribution feed network. In this possible implementation manner, a specific structure of a specific waveguide-to-fin power distribution device is provided, which improves the feasibility of the solution.

In another possible implementation, the phase shifter may include a micro-electro-mechanical system (MEMS) phase shifter, a chip-type phase shifter, or a discrete PIN that is attached to the phase shifting layer. Phase shift circuit composed of diodes, etc. In this possible implementation manner, three specific implementations of the optional phase shifter are provided, and in practical applications, the diversity and practicability of the scheme are improved.

A second aspect of the embodiments of the present application provides an electronic device including the array antenna structure of any possible implementation manner in the first aspect described above.

It can be seen from the above technical solutions that the embodiments of the present application have the following advantages:

It can be known from the foregoing technical solutions that in the embodiments of the present application, the array antenna structure includes a radiation component, a phase shifting component, and a feeding component; the phase shifting component includes a phase shifting layer, a phase shifter driving circuit, a phase shifter control interface, and a PCB A waveguide device, a phase shifter and a waveguide-to-PCB power distribution device. The phase shift layer is composed of a PCB structure; the phase shift layer is connected with a phase shifter drive circuit, a phase shifter control interface, a PCB-to-waveguide device, and a phase shift Converter and waveguide-to-PCB power distribution device; wherein, the phase-shifter drive circuit is connected to the phase-shifter control interface, one end of the PCB-to-waveguide device is connected to the signal transmission interface of the phase-shifter, and the PCB-to-waveguide device The other end is connected to the radiation component, the signal transmission interface of the phase shifter is connected to one end of the waveguide-to-PCB power distribution device; the other end of the waveguide-to-PCB power distribution device is connected to the feed component. Through the technical solution of the present application, the components such as the phase shifter are all integrated on the phase shift layer, that is, the PCB board, and then the phase shift component is integrated with the radiation component and the feed component as a whole. When using the array antenna, No secondary assembly is required, and the use process is relatively simple.

BRIEF DESCRIPTION

1 is a schematic structural diagram of an array antenna according to an embodiment of the present application;

2A is a schematic 3D structural diagram of a partial structure of an array antenna according to an embodiment of the present application;

2B is a schematic structural diagram of an antenna sub-array according to an embodiment of the present application;

2C is a schematic structural diagram of a microstrip to waveguide device according to an embodiment of the present application;

2D is a schematic structural diagram of a waveguide-to-microstrip power distribution device according to an embodiment of the present application;

2E is a schematic structural diagram of a fin-to-waveguide device according to an embodiment of the present application;

2F is a schematic structural diagram of a waveguide-fin power distribution device according to an embodiment of the present application;

2G is a top cross-sectional view of a waveguide fin-line power distribution device according to an embodiment of the present application;

2H is a front view of a waveguide fin-line power distribution device according to an embodiment of the present application;

FIG. 3 is a schematic diagram of an application system framework of an area array formed by multiple columns of antenna sub-arrays according to an embodiment of the present application.

detailed description

The technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art belong to the protection scope of the present invention.

Embodiments of the present application provide an array antenna structure and electronic equipment, which are used to provide an assembly-free array antenna structure without secondary assembly, and the use process is relatively simple.

The array antenna structure of the embodiment of the present application will be described in detail below with reference to the drawings:

Please refer to FIG. 1, which is a schematic diagram of an embodiment of an array antenna structure provided by an embodiment of the present application. As shown in FIG. 1, the array antenna structure includes a radiating component, a phase shifting component, and a feeding component. The radiating component includes At least one antenna sub-array 101; the phase-shifting component includes a phase-shifting layer 102, a phase-shifting driving circuit 103, a phase-shifting control interface 104, a PCB-to-waveguide device 105, a phase shifter 106, and a waveguide-to-PCB power distribution device 107; the feed The electrical components include a metal waveguide transmission device 108 and a waveguide power distribution feed network 109.

Wherein, the radiation component is connected with one end of the phase shifting component, and the other end of the phase shifting component is connected with the feeding component, so that the array antenna structure is a whole, and no assembly is required when in use. Just use it to reduce the complexity of the process.

In the embodiment of the present application, the antenna sub-array 101 is a terminal feeding method, and the feeding directions of two adjacent antenna sub-arrays may be opposite, so as to ensure that the space of the phase shifter portion is maximized because the phase shifter adjusts The amplitude of the phase can reach the maximum, then the beam range that can be scanned by the corresponding antenna sub-array reaches the maximum; Secondly, the antenna sub-array can also be a center feeding method, which is not specifically limited in this application.

The phase-shifting layer 103 is composed of a printed circuit board PCB, and the phase-shifting driving circuit 103, the phase-shifting control interface 104, the PCB-to-waveguide device 105, the phase shifter 106, and the waveguide-to-PCB power distribution device are connected to the phase-shifting layer 103 107. The phase-shift driving circuit 103 is connected to the phase-shift control interface 104, one end of the PCB-to-waveguide device 105 is connected to the signal transmission interface of the phase-shifter 106, and the other end of the PCB-to-waveguide device 105 is connected to the antenna The array 101 is connected, and the signal transmission interface of the phase shifter 106 is connected to one end of the waveguide-to-PCB power distribution device 107; the other end of the waveguide-to-PCB power distribution device 107 is connected to the waveguide power distribution feed network 109.

Among them, the phase shift control interface 104 is used to receive the control signal sent by the external module connected to it; the phase shift drive circuit 103 is used to drive the phase shifter to work; the PCB to waveguide device 105 is used to convert radio frequency signals (including transmitted signals or Receive signal) is converted into a radio frequency signal in the waveguide transmission mode, and the radio frequency signal is divided into multiple channels for transmission. The phase shifter 106 is used to adjust the amplitude and phase of the RF signal according to the control signal received by the phase shift control interface 104; the waveguide-to-PCB power distribution device 107 is used to convert the RF signal to a RF signal in the PCB transmission mode, and Divide the RF signal into multiple channels for transmission. The waveguide power distribution feed network 109 mainly distributes radio frequency signals to the phase shifter. Therefore, the array antenna performs phase adjustment through the phase shifter 106 to realize the beam scanning function, which can reduce the number of active channels, thereby reducing power loss and system cost.

The feed assembly includes a metal waveguide transmission device 108 and a waveguide power distribution feed network 109, and the metal waveguide transmission device 108 is connected to the waveguide power distribution feed network 109 as a whole.

The following describes the transmission path of the transmitted signal as an example: the transmitted signal is input from the input waveguide port of the metal waveguide transmission device 108, and then distributed to each waveguide-to-PCB power distribution device 107 through the waveguide power distribution feed network 109, and the waveguide to the PCB The power distribution device 107 divides the transmission signal of the waveguide transmission mode into two and converts it into the PCB transmission mode. The transmission signal of the PCB transmission mode is transmitted to the PCB-to-waveguide device 105 after phase adjustment by the phase shifter 106, then the signal is transmitted at this time It is converted into the waveguide transmission mode again, and transmitted to the antenna sub-array 101, and then radiated to the external space after passing through the antenna sub-array 101. Therefore, when each phase shifter in the array antenna configures different phases of the transmitted signal according to a certain rule, scanning in different beam directions can be achieved. Here, only the transmission signal is used as an example for description, and the reception template corresponding to the reception signal is the reverse process.

The array antenna of the present application will be described below with reference to the 3D schematic diagram of the partial structure of the array antenna shown in FIG. 2A. Please refer to FIG. 2A, a schematic diagram of the partial structure of an array antenna provided by the present application:

The array antenna shown in FIG. 1 includes at least two antenna sub-arrays 101. The 3D schematic diagram of the antenna sub-array 101 is shown in FIG. 2B. The antenna sub-array 101 includes a ridge waveguide 1001, a radiation slot antenna 1002, and polarization rotation. Cavity 1003, coupling slot antenna 1004, and component 1005 for docking the PCB-to-waveguide device; it should be noted that the waveguide slot antenna used in the antenna sub-array shown in FIG. 2B may be a microstrip antenna in practical applications. No limitation.

In this implementation, the ridge waveguide 1001 is preferably used in the antenna sub-array to transmit the radio frequency signal. The ridge waveguide 1001 has a small size, and a small-pitch array can be used to realize beam scanning in a large range.

Secondly, the antenna sub-array shown in FIG. 2B is polarized at 45 degrees. In practice, the antenna sub-array can also use horizontal polarization or vertical polarization, which is not specifically limited here.

The PCB-to-waveguide device 105 may be a microstrip-to-waveguide device or a fin-to-waveguide device, which is not specifically limited. The waveguide-to-PCB power distribution device 107 may be a waveguide-to-microstrip power distribution device, or a waveguide-to-fin line power distribution device, which is not specifically limited in this application.

The following first introduces the structure of the PCB-to-waveguide device 105 being a microstrip-to-waveguide device, and the waveguide-to-PCB power distribution device 107 being a waveguide-to-microstrip power distribution device; first, please refer to the microstrip-to-waveguide device shown in FIG. 2C. The microstrip to waveguide device includes a microstrip 2001, a multi-layer PCB board 2002, a component 2003 for docking the phase shifter 107, and a component 2004 for docking the antenna sub-array 101. The microstrip to waveguide device is used to convert the radio frequency signal into a radio frequency signal in a waveguide transmission mode, and transmits the radio frequency signal to the antenna sub-array 101 through a component 2004 for docking the antenna sub-array 101.

Please refer to the waveguide-to-microstrip power distribution device shown in FIG. 2D. The waveguide-to-microstrip power distribution device includes a microstrip line 3001, a multi-layer PCB board 3002, a component 3003 of a docking phase shifter 106, and a docking phase shifter 106 Component 3004, first waveguide ridge 3005, second waveguide ridge 3006, component 3007 of docking waveguide power distribution feed network 109, matching step 3008. The microstrip line 3001 crosses the dumbbell-shaped waveguide opening formed by the first waveguide ridge 3005 and the second waveguide ridge 3006. The microstrip line is on the side of the multilayer PCB 3002 surface away from the dumbbell-shaped waveguide opening. The matching step is used by the phase shifter to adjust the amplitude of the RF signal. The heights of the first waveguide ridge 3005 and the second waveguide ridge 3006 are inconsistent, so that the power distribution ratio of the signal transmitted by the radio frequency signal on different branches can be adjusted, and the amplitude weighting of the radio frequency signal radiated by several antenna sub-arrays can be achieved.

The structure of the PCB-to-waveguide device 105 is a fin-to-waveguide device, and the waveguide-to-PCB power distribution device 107 is a structure of a waveguide-to-finline power distribution device. First, please refer to FIG. 2E, the fin line The waveguide transfer device includes a fin line 4001, a microstrip line 4002, a multilayer PCB board 4003, a component 4004 for docking a phase shifter, and a component 4005 for docking an antenna sub-array. The fin line 4001 and the microstrip line 4002 are respectively on the multilayer PCB On the upper and lower sides of the board 4003, in the fin-to-waveguide device, the RF signal is first converted to the fin-line transmission mode RF signal, and then to the microstrip line transmission mode RF signal, and then the RF signal is converted to the waveguide RF signal in transmission mode.

The following describes the waveguide-to-fin line power distribution device shown in FIG. 2F. The waveguide-to-fin line power distribution device includes a multilayer PCB 5001, a fin line 5002, a matching step 5003, a component of a docking phase shifter 5004, and a component of a docking phase shifter 5005. Waveguide ridge turning 5006; the waveguide-to-fin power distribution device is a new type of E-plane waveguide power distribution device to H-plane waveguide power distribution device combined with conventional fin line; Figure 2G is a top cross-section of Figure 2F Figure 2H is a front view of FIG. 2F; in FIG. 2G, the side wall step 6001, the gap 6002 between the copper skins on the multilayer PCB and the matching gap 6003 are used to adjust the components of the butt phase shifter in FIG. 2G, and In FIG. 2H, the left and right offset of the top step 6004 of the waveguide adjusts the power distribution ratio of the signal transmitted by the RF signal on different branches, to achieve the weighted amplitude of the RF signal radiated by several antenna sub-arrays, and the top step 6004 of the waveguide also Used to adjust the components of the docking phase shifter in Figure 2G. In Fig. 2G, the E-plane ridge waveguide changes the direction of the electric field in a small space through the corner of the ridge waveguide 5006, and converts the E-plane waveguide to an H-plane waveguide. The H-plane waveguide extends to the two sides to obtain a rate distribution structure, and then two A conventional H-plane waveguide fin line structure is inserted into this extension to form a waveguide fin line power distribution structure. Therefore, in this waveguide to fin line power distribution device, the structure of the ridge waveguide corner 5006 realizes the E-plane to H-plane in a small space, the waveguide top step 6004 and the side wall step 6001 are adjusted to match the expanded bandwidth, and the waveguide top step 6004 The left and right offset can adjust the power division ratio to achieve amplitude weighting, with low overall conversion loss and small size.

Optionally, in the embodiment of the present application, the phase shifter 106 may be a MEMS phase shifter or a chip-type phase shifter surface-mounted on the phase shifting layer 102, or a phase shift circuit formed by a separate PIN diode. , The specific application is not limited. At present, it is preferable to use a phase shift circuit formed by discrete PIN diodes, so that the circuit loss is relatively small.

It should be noted that FIG. 1 only shows an array antenna formed by a row of antenna sub-arrays. In practical applications, it is also possible to form a surface array by arranging multiple rows of antenna sub-arrays, and each column of antennas may have a port or Multiple columns of antennas are further combined to form a port. Therefore, multiple columns of antennas can be combined into a port to form an area array. The area array itself has two-dimensional beam scanning capability. Each port corresponds to an active channel, which can realize active and passive mixed two-dimensional beam scanning. Please refer to FIG. 3. FIG. 3 is a system frame diagram of a surface array formed by a plurality of columns of antenna sub-arrays. The antenna sub-array consists of a row array and a plurality of columns of antenna sub-arrays. The phased scanning array shown in the figure, the phased scanning array is connected to the phase shifter; taking the received signal as an example, after a number of rows and columns in the surface array are combined, for an antenna port, each antenna port is as shown in Figure 3 One RF transceiver channel shown in the figure is connected, and then several RF channels are combined in the analog domain and down-converted by a mixer and passed analog-to-digital signal conversion (analog to digital) (AD)/digital-to-analog signal conversion (digital to analog) convet, DA) (analog-to-digital converter) is converted into digital signals, and several digital signals are converged to baseband for corresponding processing. The phased scanning array is used in this architecture, so that the number of digital channels is less than or equal to the number of RF transceiver channels, and the number of RF transceiver channels is less than or equal to the number of antenna subarrays. It is a mixed digital, active and passive phase control Array architecture, compared to pure active phased array architecture, can greatly reduce the number of RF transceiver channels, reduce system power consumption and cost.

Secondly, in the embodiment of the present application, a row of antenna sub-arrays as shown in FIG. 2A is connected with a phase shifter on the phase-shifting layer 102. When a multi-row antenna sub-array is used to form an area array, then there are many Phase shifters, then these phase shifters can be arranged on the phase shift layer 102, and when the phase shifters are arranged, they are respectively parallel to the area array, so that the thickness of the array antenna can be reduced, and there is no need for later use Secondary assembly and low manufacturing cost.

Optionally, in the embodiments of the present application, the mutual connection between the radiation component, the phase shifting component, and the feed component may be connected by welding, or may also be connected by screws, which is not specifically limited in this application.

In the embodiment of the present application, the array antenna structure includes a radiation component, a phase shift component and a feed component; the phase shift component includes a phase shift layer, a phase shifter drive circuit, a phase shifter control interface, a PCB-to-waveguide device, and a phase shift The phase shift layer is composed of a PCB structure; the phase shift layer is connected with a phase shifter drive circuit, a phase shifter control interface, a PCB to waveguide device, a phase shifter, and a waveguide to PCB power Distribution device; wherein, the phase shifter drive circuit is connected to the phase shifter control interface, one end of the PCB-to-waveguide device is connected to the signal transmission interface of the phase shifter, and the other end of the PCB-to-waveguide device is connected to the radiation component The signal transmission interface of the phase shifter is connected to one end of the waveguide-to-PCB power distribution device; the other end of the waveguide-to-PCB power distribution device is connected to the feed assembly. Through the technical solution of the present application, the components such as the phase shifter are all integrated on the phase shift layer, that is, the PCB board, and then the phase shift component is integrated with the radiation component and the feed component as a whole. When using the array antenna, No secondary assembly is required, and the use process is relatively simple.

As mentioned above, the above embodiments are only used to illustrate the technical solutions of the present application, not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, persons of ordinary skill in the art should understand that they can still The technical solutions described in the embodiments are modified, or some of the technical features are equivalently replaced; and these modifications or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

An array antenna structure, characterized in that the array antenna structure includes: a radiation component, a phase shift component and a feed component; the phase shift component includes a phase shift layer, a phase shifter drive circuit, a phase shifter control interface, A printed circuit board PCB-to-waveguide device, a phase shifter, and a waveguide-to-PCB power distribution device, the phase-shift layer is composed of a PCB structure;

The phase shifter layer is connected to the phase shifter drive circuit, the phase shifter control interface, the PCB to waveguide device, the phase shifter, and the waveguide to PCB power distribution device;

Wherein, the phase shifter drive circuit is connected to the phase shifter control interface, one end of the PCB-to-waveguide device is connected to the signal transmission interface of the phase shifter, and the other end of the PCB-to-waveguide device is connected to the The radiation component is connected, and the signal transmission interface of the phase shifter is connected to one end of the waveguide-to-PCB power distribution device; the other end of the waveguide-to-PCB power distribution device is connected to the feed component.
The array antenna structure according to claim 1, wherein the radiation component comprises at least two antenna sub-arrays; the feed component comprises a metal waveguide transmission device and a waveguide power distribution feed network, the waveguide power distribution The feed network is connected to the metal waveguide transmission device as a whole, and the waveguide power distribution feed network is connected to the other end of the waveguide-to-PCB power distribution device.
The array antenna structure according to claim 1 or 2, wherein the PCB-to-waveguide device comprises: a microstrip-to-waveguide device or a fin-to-waveguide device.
The array antenna structure according to any one of claims 1 to 3, wherein the at least two antenna sub-arrays include a waveguide slot antenna or a microstrip antenna.
The array antenna structure according to any one of claims 1 to 3, wherein the feeding method of the at least two antenna sub-arrays includes a terminal feeding method or a center feeding method.
The array antenna structure according to any one of claims 1 to 5, wherein the waveguide-to-PCB power distribution device comprises a waveguide-to-microstrip power distribution device or a waveguide-to-fin power distribution device.
The array antenna structure according to claim 3, wherein the waveguide-to-microstrip power distribution device comprises a microstrip line and a waveguide ridge, and the microstrip line crosses the dumbbell-shaped waveguide opening of the waveguide ridge , The waveguide ridge is connected to the waveguide power distribution feed network.
The array antenna structure according to claim 3, wherein the waveguide-to-fin line power distribution device includes a fin line and a waveguide ridge, the fin line is connected to the waveguide ridge, and the waveguide ridge and the waveguide Power distribution feeder network connection.
The array antenna structure according to any one of claims 1 to 8, wherein the phase shifter comprises: a micro-electromechanical system MEMS phase shifter and a chip-type shifter surface-mounted on the phase shifting layer A phase shifter or a phase shift circuit composed of discrete PIN diodes.
An electronic device, characterized by comprising the array antenna structure according to any one of claims 1-9.