High-frequency miniaturized special-shaped antenna array

Abstract

The invention relates to a special-shaped antenna array, in particular to a high-frequency miniaturized special-shaped antenna array applied to an airborne platform, which is used for solving the defect that the existing antenna array cannot meet the requirements of miniaturization, high density and electrical frequency. The high-frequency miniaturized special-shaped antenna array comprises a bottom plate assembly, a shell assembly, a printed board antenna assembly and a cable assembly, according to the antenna array, the antenna unit and the radio frequency channel are connected through the cable assembly, switching in a limited space is achieved, and then the requirements of an airborne radar for miniaturization, high density and electrical frequency of the antenna array are met.

Description

Technical Field

[0001] The present invention relates to a special-shaped antenna array, and particularly to a high-frequency miniaturized special-shaped antenna array applied to an airborne platform. Background Art

[0002] The structural design goal of an airborne radar is to enable the device to work long-term and normally on an aircraft with limited space and harsh environment, making the mission system and the aircraft platform an inseparable whole. Due to the characteristics of the airborne platform, its antenna array must also meet the corresponding environmental adaptability requirements. Therefore, higher requirements are put forward for the antenna array of the airborne platform in terms of miniaturization, high density, electrical performance, etc. Summary of the Invention

[0003] The purpose of the present invention is to solve the deficiencies that the existing antenna array cannot meet the requirements of miniaturization, high density, and electrical frequency, and to provide a high-frequency miniaturized special-shaped antenna array.

[0004] In order to solve the above deficiencies of the existing technology, the present invention provides the following technical solutions:

[0005] A high-frequency miniaturized special-shaped antenna array, characterized in that it includes a bottom plate assembly, a housing assembly arranged on the bottom plate assembly, a printed circuit board antenna assembly arranged on the outer surface of the housing assembly, and a cable assembly;

[0006] The bottom plate assembly includes A bottom plates arranged in sequence, and each bottom plate integrates multiple radio frequency channels, A≥1; the bottom plate assembly is fixed on the airborne platform through the housing assembly, and an installation inner cavity is formed between the bottom plate assembly and the housing assembly; multiple antenna units are arranged on the printed circuit board antenna assembly, and each antenna unit is connected to its corresponding radio frequency channel through the cable assembly. The cable assembly extends out of the installation inner cavity through the antenna unit, and the cable assembly is fixed to the radiation metal on the outer surface of the antenna unit by welding.

[0007] Further, the housing assembly and the bottom plate assembly form a triangular prism structure, and the installation inner cavity is inside the triangular prism structure; the housing assembly includes a first housing, a second housing, two covers, and two fixing plates. The first housing and the second housing are both connected to the bottom plate assembly, and the three are respectively located on the three sides of the triangular prism structure. The two covers are respectively located on the two bottom surfaces of the triangular prism structure, and the two fixing plates are symmetrically arranged on the two sides of the first housing and the second housing close to the bottom plate assembly.

[0008] Further, the first housing and the second housing are connected to the bottom plate assembly through at least one connecting plate. The two ends of the connecting plate are provided with a first connecting column and a second connecting column respectively connected to the first housing and the second housing, and the lower surface of the connecting plate is connected to the bottom plate assembly.

[0009] Further, the first housing and the second housing are connected to the bottom plate assembly through A connecting plates, and the A connecting plates correspond to A bottom plates one by one.

[0010] Further, the printed circuit board antenna assembly includes a first printed circuit board antenna and a second printed circuit board antenna respectively disposed on the outer surface of the first housing and the outer surface of the second housing.

[0011] Further, both the first printed circuit board antenna and the second printed circuit board antenna are rectangular structures composed of a plurality of printed circuit board antennas. The adjacent printed circuit board antennas are connected by stepped clamping or planar splicing, and a plurality of antenna elements are provided on each printed circuit board antenna.

[0012] Further, the signal radiation directions of adjacent antenna elements are different.

[0013] Further, after the cable assembly is fixed to the radiation metal on the outer surface of the antenna element by welding, the solder cross-section between the two is triangular, which is used to improve the welding reliability and antenna performance.

[0014] Further, positioning pins are provided on the bottom plate assembly, and positioning holes adapted to the positioning pins are provided on the connecting plates, which are used to ensure the positioning accuracy between the bottom plate assembly and the housing assembly.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] (1) The high-frequency miniaturized special-shaped antenna array applicable to an airborne platform of the present invention includes a bottom plate assembly, a housing assembly, a printed circuit board antenna assembly and a cable assembly; the antenna unit is connected to the RF channel through the cable assembly, realizing the transfer in a limited space (installation inner cavity), and further meeting the miniaturization, high density and electrical frequency requirements of the antenna array for an airborne radar.

[0017] (2) In the high-frequency miniaturized special-shaped antenna array applicable to an airborne platform of the present invention, the bottom plate assembly and the housing assembly are processed separately, and the positioning accuracy between the two is ensured by the positioning pins provided on the bottom plate assembly and the positioning holes provided on the housing assembly, which can not only reduce the processing difficulty of each component part, but also solve the problem of difficult installation and wiring of the cable assembly.

[0018] (3) In the high-frequency miniaturized special-shaped antenna array applicable to an airborne platform of the present invention, the antenna feeding method of each channel formed by the antenna end and the plug-in end of the TR component is realized by welding the cable assembly to the radiation metal of the antenna element. The solder between the two after welding is triangular, which can not only ensure the welding reliability, but also improve the antenna performance. Description of the Drawings

[0019] Figure 1Schematic diagram of the structure of an embodiment of a high-frequency miniaturized special-shaped antenna array of the present invention (the cable assembly, cover plate, and one of the fixing plates are not shown);

[0020] Figure 2 For Figure 1 Schematic diagram of the A-A direction structure;

[0021] Figure 3 Schematic diagram of the structure of the bottom plate assembly in the embodiment of the present invention;

[0022] Figure 4 Schematic diagram of the structure of the first printed circuit board antenna in the embodiment of the present invention;

[0023] Figure 5 Schematic diagram of the structure of the printed circuit board antenna in the embodiment of the present invention;

[0024] Figure 6 Schematic diagram of the structure of the solder between the cable assembly and the outer surface of the printed circuit board antenna assembly in the embodiment of the present invention.

[0025] Explanation of the reference numerals is as follows: 1-bottom plate assembly, 11-bottom plate, 12-radio frequency channel; 2-housing assembly, 21-first housing, 22-second housing, 23-cover plate, 24-fixing plate, 25-connecting plate, 26-first connecting column, 27-second connecting column; 3-printed circuit board antenna assembly, 31-printed circuit board antenna, 32-antenna unit; 4-cable assembly; 5-solder. Detailed implementation manners

[0026] The present invention will be further described below with reference to the drawings and exemplary embodiments.

[0027] Refer to Figures 1 to 6 , a high-frequency miniaturized special-shaped antenna array, including a bottom plate assembly 1, a housing assembly 2 disposed on the bottom plate assembly 1, a printed circuit board antenna assembly 3 disposed on the outer surface of the housing assembly 2, and a cable assembly 4.

[0028] The bottom plate assembly 1 includes sixteen bottom plates 11, which are divided into four groups, and each group of bottom plates 11 is arranged in a 1*4 row and column matrix; sixteen radio frequency channels 12 arranged in a 2*8 row and column matrix are integrated on each bottom plate 11.

[0029] The housing assembly 2 and the bottom plate assembly 1 form a triangular prism structure, and the inside of the triangular prism structure is an installation cavity; the housing assembly 2 includes a first housing 21, a second housing 22, two cover plates 23, two fixing plates 24 and sixteen connecting plates 25. The first housing 21, the second housing 22 and the bottom plate assembly 1 are respectively located on the three side surfaces of the triangular prism structure, and the two cover plates 23 are respectively located on the two bottom surfaces of the triangular prism structure. The two fixing plates 24 are symmetrically arranged on the two side edges of the first housing 21 and the second housing 22 close to the bottom plate assembly 1 for effective splicing with the remaining structures in the whole machine system to achieve a smooth transition effect.

[0030] Both the first housing 21 and the second housing 22 are connected to the bottom plate assembly 1 through sixteen connecting plates 25. The sixteen connecting plates 25 are respectively arranged between two columns of radio frequency channels 12 of their corresponding bottom plates 11. At both ends of each connecting plate 25, there are a first connecting column 26 and a second connecting column 27 respectively connected to the first housing 21 and the second housing 22.

[0031] The bottom plate assembly 1 is fixed on the airborne platform through the housing assembly 2. The bottom plate assembly 1 and the housing assembly 2 are processed separately, and the positioning accuracy between the bottom plate assembly 1 and the housing assembly 2 is ensured by the positioning pins arranged on each bottom plate 11 and the positioning holes arranged on each connecting plate 25.

[0032] The printed circuit board antenna assembly 3 includes a first printed circuit board antenna and a second printed circuit board antenna arranged on the outer surfaces of the first housing 21 and the second housing 22. Both the first printed circuit board antenna and the second printed circuit board antenna are rectangular structures composed of multiple printed circuit board antennas 31. The adjacent printed circuit board antennas 31 are connected by stepped clamping. There are thirty-two antenna units 32 arranged on each printed circuit board antenna 31. The signal radiation directions of the adjacent antenna units 32 are different. Each antenna unit 32 is connected to its corresponding radio frequency channel 12 through the cable assembly 4. The cable assembly 4 extends out of the installation cavity through the antenna unit 32. The cable assembly 4 is fixed to the radiation metal on the outer surface of the antenna unit 32 by welding. After welding, the solder cross-section between the cable assembly 4 and the radiation metal on the outer surface of the antenna unit 32 is triangular.

Claims

1. A high-frequency miniaturized special-shaped antenna array, characterized in that: It includes a base plate assembly (1), a housing assembly (2) disposed on the base plate assembly (1), a printed circuit board antenna assembly (3) disposed on the outer surface of the housing assembly (2), and a cable assembly (4). The base plate assembly (1) includes A base plates (11) arranged in sequence, and a plurality of radio frequency channels (12) are integrated on each base plate (11), where A≥1; the base plate assembly (1) is fixed on the airborne platform through the housing assembly (2), and an installation inner cavity is formed between the base plate assembly (1) and the housing assembly (2); a plurality of antenna units (32) are provided on the printed circuit board antenna assembly (3), and each antenna unit (32) is connected to its corresponding radio frequency channel (12) through the cable assembly (4). The cable assembly (4) extends out of the installation inner cavity through the antenna unit (32), and the cable assembly (4) is fixed to the radiation metal on the outer surface of the antenna unit (32) by welding.

2. The high-frequency miniaturized special-shaped antenna array according to claim 1, characterized in that: The housing assembly (2) and the base plate assembly (1) form a triangular prism structure, and the installation inner cavity is inside the triangular prism structure; the housing assembly (2) includes a first housing (21), a second housing (22), two cover plates (23) and two fixing plates (24). The first housing (21) and the second housing (22) are both connected to the base plate assembly (1), and the three are respectively located on the three sides of the triangular prism structure. The two cover plates (23) are respectively located on the two bottom surfaces of the triangular prism structure, and the two fixing plates (24) are symmetrically arranged on the two side edges of the first housing (21) and the second housing (22) close to the base plate assembly (1).

3. A high-frequency miniaturized special-shaped antenna array according to claim 2, characterized in that: The first housing (21) and the second housing (22) are connected to the base plate assembly (1) through at least one connecting plate (25). The two ends of the connecting plate (25) are provided with a first connecting column (26) and a second connecting column (27) respectively connected to the first housing (21) and the second housing (22), and the lower surface of the connecting plate (25) is connected to the base plate assembly (1).

4. A high-frequency miniaturized special-shaped antenna array according to claim 3, characterized in that: The first housing (21) and the second housing (22) are connected to the base plate assembly (1) through A connecting plates (25), and the A connecting plates (25) correspond to the A base plates (11) one by one.

5. A high-frequency miniaturized special-shaped antenna array according to any one of claims 3 or 4, characterized in that: The printed circuit board antenna assembly (3) includes a first printed circuit board antenna and a second printed circuit board antenna respectively disposed on the outer surface of the first housing (21) and the outer surface of the second housing (22).

6. The high-frequency miniaturized special-shaped antenna array according to claim 5, wherein: Both the first printed circuit board antenna and the second printed circuit board antenna are rectangular structures composed of a plurality of printed circuit board antennas (31). The adjacent printed circuit board antennas (31) are connected by stepped clamping or planar splicing, and a plurality of antenna units (32) are provided on each printed circuit board antenna (31).

7. A high-frequency miniaturized special-shaped antenna array according to claim 6, characterized in that: The signal radiation directions of adjacent antenna units (32) are different.

8. A high-frequency miniaturized special-shaped antenna array according to claim 7, characterized in that: After the cable assembly (4) is fixed to the radiation metal on the outer surface of the antenna unit (32) by welding, the cross section of the solder between the two is triangular.

9. A high-frequency miniaturized special-shaped antenna array according to claim 8, characterized in that: Positioning pins are provided on the base plate assembly (1), and positioning holes adapted to the positioning pins are provided on the connecting plate (25).

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