A large-size lightweight phased array stacked antenna

Abstract

The application relates to a phased array antenna, in particular to a large-size lightweight phased array laminated antenna, and aims to solve the problem that existing phased array laminated antennas are difficult to meet the lightweight and portability requirements. The shapes of the antenna array layer, the main shell, the power division layer, the wave control mounting plate and the wave control layer in the application are circular or rectangular; the antenna array layer comprises an antenna mounting plate and a plurality of antenna single arrays arranged on the antenna mounting plate; the TR array layer comprises a plurality of TR single modules which are the same in number as the antenna single arrays; each TR single module is connected with a corresponding antenna single array; the surface area of the antenna mounting plate is larger than the outer edge area of the TR array layer; the upper surface area of the main shell is larger than the lower surface area, the outer edge of the upper surface of the main shell corresponds to the outer edge of the TR array layer, the lower surface of the main shell corresponds to the outer edge of the power division layer, and the outer edges of the wave control mounting plate and the wave control layer correspond to the outer edge of the power division layer.

Description

Technical Field

[0001] This invention relates to a phased array antenna, specifically a large-size, lightweight phased array stacked antenna. Background Technology

[0002] A phased array antenna refers to an antenna that changes its radiation pattern shape by controlling the feed phase of the radiating elements in the array antenna. With the development of communication technology, phased array antennas, as a new force in communication, are facing increasing demand. Simultaneously, through market competition and product iteration, lightweight design has become a fundamental indicator for phased array antenna products. Existing phased array stacked antennas include a shell and multiple layers disposed within the shell. The shell includes an interlocking radome and a base. The multiple layers include, from top to bottom, an antenna array layer, a TR array layer, a power layer, a beam control layer, and other functional module layers. The lower surface of the TR array layer is fitted with a main shell, and the lower surface of the main shell is attached to the upper surface of the power layer. The bottom outer ring of the main shell is connected to the base. A beam control mounting plate is disposed between the lower surface of the power layer and the upper surface of the beam control layer. However, the TR array layer, power layer, and beam control layer in existing phased array stacked antennas are relatively large, making it difficult to meet the requirements for lightweight design and portability. Summary of the Invention

[0003] The purpose of this invention is to solve the problem that existing phased array stacked antennas cannot meet the requirements of lightweight and portability, and to provide a large-size lightweight phased array stacked antenna.

[0004] To achieve the above objectives, the technical solution provided by this invention is:

[0005] A large-size, lightweight phased array stacked antenna includes a housing and multiple layers disposed within the housing. The housing includes an interlocking radome and a base. The multiple layers include, from top to bottom, an antenna array layer, a TR array layer, a power layer, a beam control layer, and other functional module layers. A main housing is disposed on the lower surface of the TR array layer, and the lower surface of the main housing is attached to the upper surface of the power layer. The bottom outer ring of the main housing is connected to the base. A beam control mounting plate is disposed between the lower surface of the power layer and the upper surface of the beam control layer. Its special feature is that:

[0006] The antenna array layer, main housing, power layer, wave control mounting plate, and wave control layer are all circular or rectangular in shape.

[0007] The antenna array layer includes an antenna mounting plate and multiple antenna elements disposed on the antenna mounting plate; the TR array layer includes TR modules that are the same number and position as the antenna elements; each TR module is electrically connected to a corresponding antenna element; each TR module is electrically connected to the beam control layer and the power layer.

[0008] The outer edge dimension of the antenna mounting plate is larger than the outer edge dimension of the TR array layer; the upper surface area of ​​the main housing is larger than the lower surface area; the outer edge of the upper surface of the main housing is equal to the size of the TR array layer; the lower surface of the main housing corresponds to the outer edge of the power layer; and the outer edges of the beam control mounting plate and the beam control layer both correspond to the outer edge of the power layer.

[0009] The power layer is equipped with the same number of phase shifter links as the TR single module, and each phase shifter link is electrically connected to the corresponding TR single module.

[0010] Furthermore, the antenna array layer also includes a shielding cavity with the same number of antenna elements as the antenna array, and two BeiDou antennas; the multiple antenna elements are arranged as follows: one antenna element is set in the middle of the antenna mounting plate, and the remaining antenna elements are arranged in a circle from the inside to the outside with the one antenna element as the center; the two BeiDou antennas are symmetrically arranged on the outermost circle, and the two BeiDou antennas and the antenna elements on the outermost circle are evenly distributed, while the antenna elements on the remaining circles are evenly distributed.

[0011] The antenna array includes an antenna dielectric board, a first antenna network board, a first feed board and a second feed board disposed between the lower surface of the antenna dielectric board and the upper surface of the first antenna network board, a second antenna network board disposed on the lower surface of the first antenna network board, and an antenna connector disposed on the lower surface of the second antenna network board.

[0012] The first and second feed boards are connected to each other in a cross shape.

[0013] An antenna support is also provided between the antenna dielectric board and the first antenna network board. The antenna support includes a support plate and four reinforcing ribs that are vertically arranged on the support plate and connected in a cross shape. The lower surface of the support plate is connected to the upper surface of the first antenna network board. The large end of each reinforcing rib is connected to the upper surface of the antenna support, and the small end is connected to the lower surface of the antenna dielectric board.

[0014] The antenna support is made of polytetrafluoroethylene, and the antenna connector is used to connect to the corresponding TR single module.

[0015] Furthermore, each of the TR single modules includes an interconnected TR upper cover plate and a TR lower cover plate, and a TR PCB disposed between the TR upper cover plate and the TR lower cover plate. The TR PCB is provided with a transmit RF connector, a receive RF connector and a rectangular connector plug; the rectangular connector plug is connected to the wave control layer.

[0016] The antenna connector is connected to the TR PCB on the corresponding TR module.

[0017] Furthermore, the upper cover plate and the lower cover plate of the TR are connected by a stop joint.

[0018] Furthermore, each phase shifter link is electrically connected to the corresponding TR PCB in the TR single module via a connector; the power-layered phase shifter link is equipped with a transmit RF connector.

[0019] Furthermore, the wave control layer is provided with rectangular connector sockets that are the same number and position as the TR single module, and each rectangular connector socket is connected to the rectangular connector plug in the corresponding TR single module.

[0020] Furthermore, the other functional module layer includes a beacon board and an inertial navigation system.

[0021] Furthermore, the antenna array layer, main housing, power layer, wave control mounting plate, and wave control layer are all circular in shape.

[0022] Furthermore, a waterproof sealing ring is provided at the connection between the radome and the base; the edges of the power layer, the wave control mounting plate, and the wave control layer are all toothed and corresponding to each other.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. The large-size lightweight phased array stacked antenna provided by the present invention adopts a top-to-bottom shrinkage design from the antenna array layer, TR array layer, power layer, wave control layer and other functional module layers to reduce the overall weight and meet the requirements of lightweight and portability.

[0025] 2. The large-size lightweight phased array stacked antenna provided by the present invention reduces the size of the TR array layer while transferring the phase shifter links of the TR PCB in the TR layer to the power layer, which can reduce the overall weight.

[0026] 3. The large-size lightweight phased array stacked antenna provided by this invention has each antenna element or each TR module being completely identical, which is beneficial to the consistency of design and mass production.

[0027] 4. The large-size lightweight phased array stacked antenna provided by this invention has a stepped connection between the upper cover plate and the lower cover plate of the TR, which ensures that the leakage of radio frequency signals in the TR PCB is prevented and greatly improves the shielding performance.

[0028] 5. The large-size lightweight phased array stacked antenna provided by the present invention has a transmit RF connector, a receive RF connector and a rectangular connector plug on the TR PCB; the wave control layer has rectangular connector sockets with the same number and corresponding positions as the TR single module, and each rectangular connector socket is connected to the rectangular connector plug in the corresponding TR single module; such a configuration can ensure the control of the antenna beam for transmission and reception, splitting and combining.

[0029] 6. The large-size lightweight phased array stacked antenna provided by the present invention has toothed edges on the power layer, wave control mounting plate and wave control layer, which correspond to each other. While ensuring the signal transmission of the connector, its area is minimized, thereby reducing the weight. Attached Figure Description

[0030] Figure 1 This is an exploded view of an embodiment of the large-size lightweight phased array stacked antenna of the present invention;

[0031] Figure 2 This is a schematic diagram of the antenna array layer structure in an embodiment of the large-size lightweight phased array stacked antenna of the present invention;

[0032] Figure 3 This is a schematic diagram of the structure of a single antenna element in an embodiment of the large-size lightweight phased array stacked antenna of the present invention;

[0033] Figure 4 This is a schematic diagram of the antenna array layer and the TR array layer in an embodiment of the large-size lightweight phased array stacked antenna of the present invention;

[0034] Figure 5 This is a schematic diagram of the structure of a single TR module in an embodiment of the large-size lightweight phased array stacked antenna of the present invention;

[0035] Figure 6 This is a schematic diagram of the structure of an embodiment of the large-size lightweight phased array stacked antenna of the present invention;

[0036] Figure 7 This is an exploded view of the main housing, power layer, wave control mounting plate, wave control layer, and other functional module layers in an embodiment of the large-size lightweight phased array stacked antenna of the present invention.

[0037] Figure 8 This is a schematic diagram showing the connection relationship between the TR module, main housing, and power layer in an embodiment of the large-size lightweight phased array stacked antenna of the present invention.

[0038] Figure 9 This is a bottom view of an embodiment of the large-size lightweight phased array stacked antenna of the present invention, excluding the radome and base;

[0039] Figure 10This is a schematic diagram of the structure of the base, main housing, and TR array layer in an embodiment of the large-size lightweight phased array stacked antenna of the present invention;

[0040] Figure 11 This is a schematic diagram of the structure of an embodiment of the large-size lightweight phased array stacked antenna of the present invention (excluding the radome);

[0041] Figure 12 This is a schematic diagram showing the connection relationship between the TR PCB and the power layer in an embodiment of the large-size lightweight phased array stacked antenna of the present invention.

[0042] Figure 13 This is a schematic diagram showing the connection relationship between the TR PCB and the wave control layer in an embodiment of the large-size lightweight phased array stacked antenna of the present invention;

[0043] Explanation of reference numerals in the attached figures:

[0044] 1-Radar radome; 2-Base; 21-Waterproof sealing ring; 3-Antenna array layer; 31-Antenna single array; 32-Shielding cavity; 33-Antenna mounting plate; 34-BeiDou antenna; 3101-Antenna dielectric board; 3102-First feed board; 3103-Second feed board; 3104-Antenna support; 3105-First antenna network board; 3106-Second antenna network board; 3107-Antenna connector; 4-TR array layer; 41-TR single module; 4101-TR upper cover plate; 4102-TR PCB; 4103-TR lower cover plate; 4104-Transmit RF connector; 4105-Receive RF connector; 4106-Rectangular connector plug; 4107-Connector; 5-Main housing; 6-Power layer; 7-Band control mounting plate; 8-Band control layer; 801-Rectangular connector socket; 9-Other functional module layer; 91-Beacon board; 92-Inertial navigation system. Detailed Implementation

[0045] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0046] A large-size, lightweight phased array stacked antenna, see [link / reference] Figures 1 to 13 The system includes an outer shell and multiple layers within the shell. The outer shell includes an interlocking radome 1 and a base 2. The multiple layers include, from top to bottom, an antenna array layer 3, a TR array layer 4, a power layer 6, a beam control layer 8, and other functional module layers 9. A main housing 5 is provided on the lower surface of the TR array layer 4, and the lower surface of the main housing 5 is attached to the upper surface of the power layer 6. The bottom outer ring of the main housing 5 is connected to the base 2. A beam control mounting plate 7 is provided between the lower surface of the power layer 6 and the upper surface of the beam control layer 8. The TR array layer 4 also serves as a connecting layer.

[0047] To reduce manufacturing difficulty, the antenna array layer 3, main housing 5, power layer 6, wave control mounting plate 7, and wave control layer 8 are all circular in shape.

[0048] The antenna array layer 3 includes an antenna mounting plate 33, thirty-one antenna single arrays 31 disposed on the antenna mounting plate 33, two Beidou antennas 34, and a shielding cavity 32 with the same number of antenna single arrays 31; the TR array layer 4 includes TR single modules 41 with the same number and corresponding positions as the antenna single arrays 31; each TR single module 41 is connected to a corresponding antenna single array 31; the thirty-one antenna single arrays 31 are arranged as follows: one antenna single array 31 is disposed in the middle of the antenna mounting plate 33, and the remaining antenna single arrays 31 are evenly distributed around the one antenna single array 31 from the inside to the outside of the circle; the two Beidou antennas 34 are located opposite each other on the outermost circle.

[0049] The antenna array 31 includes an antenna dielectric substrate 3101, a first antenna network board 3105, a first feed board 3102 and a second feed board 3103 disposed between the lower surface of the antenna dielectric substrate 3101 and the upper surface of the first antenna network board 3105, a second antenna network board 3106 disposed on the lower surface of the first antenna network board 3105, and an antenna connector 3107 disposed on the lower surface of the second antenna network board 3106; the first feed board 3102 and the second feed board 3103 are connected to each other in a cross shape.

[0050] An antenna support 3104 is provided between the antenna dielectric substrate 3101 and the first antenna network board 3105. The antenna support 3104 includes a support plate and four reinforcing ribs provided on the support plate. The lower surface of the support plate is connected to the upper surface of the first antenna network board 3105. The large end of each reinforcing rib is connected to the upper surface of the antenna support 3104, and the small end is connected to the lower surface of the antenna dielectric substrate 3101.

[0051] The antenna support 3104 is made of polytetrafluoroethylene, and the antenna connector 3107 is used to connect to the corresponding TR single module 41.

[0052] The surface area of ​​the antenna mounting plate 33 is larger than the outer edge area of ​​the TR array layer 4; the upper surface area of ​​the main housing 5 is larger than the lower surface area, the outer edge of the upper surface of the main housing 5 corresponds to the outer edge of the TR array layer 4, the lower surface of the main housing 5 corresponds to the outer edge of the power layer 6, and the outer edges of the beam control mounting plate 7 and the beam control layer 8 both correspond to the outer edge of the power layer 6; the power layer 6 is provided with the same number of phase shifter links as the TR single module 41, and each phase shifter link is electrically connected to the corresponding TR single module 41. Each TR single module 41 includes an interconnected TR upper cover plate 4101 and a TR lower cover plate 4103, and a TR PCB 4102 disposed between the TR upper cover plate 4101 and the TR lower cover plate 4103. The TR PCB 4102 is provided with a transmit RF connector 4104, a receive RF connector 4105, and a rectangular connector plug 4106.

[0053] The upper cover plate 4101 and the lower cover plate 4103 of TR are connected by a stepped fit, which prevents the leakage of radio frequency signals in TR PCB4102 and greatly improves the shielding performance.

[0054] Each phase shifter link is electrically connected to the corresponding TR PCB4102 in the TR single module 41.

[0055] The waveguide layer 8 is provided with rectangular connector sockets 801 in the same number and corresponding positions as the TR single module 41. Each rectangular connector socket 801 is connected to the rectangular connector plug 4106 in the corresponding TR single module 41. The edges of the power layer 6, the waveguide mounting plate 7, and the waveguide layer 8 are all toothed and correspond to each other.

[0056] In this embodiment, the other functional module layer 9 includes a beacon board 91 and an inertial navigation system 92.

[0057] In this embodiment, the phase shifter link originally located on TR PCB 4102 is moved to power layer 6, thereby reducing the weight and size of TR single module 41.

[0058] The functions of each level are explained below:

[0059] a) The radome 1 is made of fiberglass honeycomb structure material and is processed in one piece, which has the advantages of high wave transmission and lightweight.

[0060] b) Antenna array layer 3 is designed with a broadband microstrip antenna to ensure antenna consistency;

[0061] c) The main functions of TR single module 41 in TR array layer 4 are transmit / receive switching, transmit power amplifier, receive low noise amplifier, filtering, temperature detection, etc.

[0062] d) The main functions of power layer 6 are to split or combine the power of TR module 41, control the transmit and receive phase scan, control the transmit and receive amplitude, and amplify the auxiliary TR. In power layer 6, the transmit and receive amplification are independent links. The transmit input signal is pre-amplified and then split into multiple paths by the power divider. The receive signal combines multiple TRs into one path by the power divider, and then amplifies and outputs it.

[0063] e) Beam control layer 8 is responsible for power conversion and control of each module, as well as beam control and formation;

[0064] f) Base 2 provides support for the entire machine and an interface for mounting the machine body.

Claims

1. A large-size lightweight phased array stacked antenna, comprising a housing and multiple layers disposed within the housing, the housing comprising an interlocking radome (1) and a base (2), the multiple layers comprising, from top to bottom, an antenna array layer (3), a TR array layer (4), a power layer (6), a beam control layer (8), and other functional module layers (9); a main housing (5) is disposed on the lower surface of the TR array layer (4), the lower surface of the main housing (5) is attached to the upper surface of the power layer (6), and the bottom outer ring of the main housing (5) is connected to the base (2); a beam control mounting plate (7) is disposed between the lower surface of the power layer (6) and the upper surface of the beam control layer (8); characterized in that: The antenna array layer (3), main housing (5), power layer (6), wave control mounting plate (7), and wave control layer (8) are all circular or rectangular in shape; The antenna array layer (3) includes an antenna mounting plate (33) and multiple antenna single elements (31) disposed on the antenna mounting plate (33); the TR array layer (4) includes TR single modules (41) with the same number and corresponding positions as the antenna single elements (31); each TR single module (41) is electrically connected to a corresponding antenna single element (31); each TR single module (41) is electrically connected to the beam control layer (8) and the power layer (6); The outer edge dimension of the antenna mounting plate (33) is larger than the outer edge dimension of the TR array layer (4); the upper surface area of ​​the main housing (5) is larger than the lower surface area, the outer edge of the upper surface of the main housing (5) is equal to the size of the TR array layer (4), the lower surface of the main housing (5) corresponds to the outer edge of the power layer (6), and the outer edges of the wave control mounting plate (7) and the wave control layer (8) both correspond to the outer edge of the power layer (6). The power layer (6) is provided with the same number of phase shifter links as the TR single module (41), and each phase shifter link is electrically connected to the corresponding TR single module (41).

2. The large-size lightweight phased array stacked antenna according to claim 1, characterized in that: The antenna array layer (3) also includes shielding cavities (32) with the same number of antenna elements (31) as the antenna single elements (31), and two Beidou antennas (34); the multiple antenna elements (31) are arranged as follows: one antenna element (31) is set in the middle of the antenna mounting plate (33), and the remaining antenna elements (31) are arranged in a circle from the inside to the outside with the one antenna element (31) as the center; the two Beidou antennas (34) are symmetrically arranged on the outermost circle, and the two Beidou antennas (34) and the antenna elements (31) on the outermost circle are evenly distributed, and the antenna elements (31) on the other circles are evenly distributed; The antenna array (31) includes an antenna dielectric board (3101), a first antenna network board (3105), a first feed board (3102) and a second feed board (3103) disposed between the lower surface of the antenna dielectric board (3101) and the upper surface of the first antenna network board (3105), a second antenna network board (3106) disposed on the lower surface of the first antenna network board (3105), and an antenna connector (3107) disposed on the lower surface of the second antenna network board (3106). The first power supply board (3102) and the second power supply board (3103) are connected to each other in a cross shape; An antenna support (3104) is also provided between the antenna dielectric substrate (3101) and the first antenna network board (3105). The antenna support (3104) includes a support plate and four reinforcing ribs that are vertically arranged on the support plate and connected in a cross shape. The lower surface of the support plate is connected to the upper surface of the first antenna network board (3105). The large end of each reinforcing rib is connected to the upper surface of the antenna support (3104), and the small end is connected to the lower surface of the antenna dielectric substrate (3101). The antenna support (3104) is made of polytetrafluoroethylene, and the antenna connector (3107) is used to connect to the corresponding TR single module (41).

3. The large-size lightweight phased array stacked antenna according to claim 2, characterized in that: Each of the TR single modules (41) includes an interconnected TR upper cover plate (4101) and TR lower cover plate (4103), and a TR PCB (4102) disposed between the TR upper cover plate (4101) and TR lower cover plate (4103). The TR PCB (4102) is provided with a transmit RF connector (4104), a receive RF connector (4105) and a rectangular connector plug (4106); the rectangular connector plug (4106) is connected to the wave control layer (8). The antenna connector (3107) is connected to the TR PCB (4102) on the corresponding TR module (41).

4. A large-size lightweight phased array stacked antenna according to claim 3, characterized in that: The upper cover plate (4101) and the lower cover plate (4103) of the TR are connected by a stop fit.

5. A large-size lightweight phased array stacked antenna according to claim 4, characterized in that: Each phase shifter link is electrically connected to the corresponding TR PCB (4102) in the TR single module (41) via a connector (4107); the phase shifter links of the power layer (6) are provided with a transmit RF connector (4104).

6. A large-size lightweight phased array stacked antenna according to claim 5, characterized in that: The wave control layer (8) is provided with rectangular connector sockets (801) of the same number and position as the TR single module (41), and each rectangular connector socket (801) is connected to the rectangular connector plug (4106) in the corresponding TR single module (41).

7. A large-size lightweight phased array stacked antenna according to claim 6, characterized in that: The other functional module layer (9) includes a beacon board (91) and an inertial navigation system (92).

8. A large-size lightweight phased array stacked antenna according to any one of claims 1 to 7, characterized in that: The antenna array layer (3), main housing (5), power layer (6), wave control mounting plate (7), and wave control layer (8) are all circular in shape.

9. A large-size lightweight phased array stacked antenna according to claim 8, characterized in that: A waterproof sealing ring (21) is provided at the connection between the antenna cover (1) and the base (2); the edges of the power layer (6), the wave control mounting plate (7) and the wave control layer (8) are all toothed and are arranged corresponding to each other.

Images