Microstrip antenna integrated structure with TR assembly and integration method

Abstract

The application provides a microstrip antenna and TR assembly integrated structure and an integrated method, and belongs to the field of radio frequency microwave technology, comprising a TR assembly and a microstrip antenna, wherein the TR assembly comprises a box body, a multi-channel insulator pin connector is arranged on the antenna radio frequency interface end of the front end of the box body; the microstrip antenna is integrated on the antenna radio frequency interface end, the microstrip antenna is provided with radio frequency signal holes corresponding to the number and position of the insulator pin connector, the insulator pin connector passes through the radio frequency signal holes and is sintered together with the microstrip antenna. The microstrip antenna and TR assembly integrated structure provided by the application has the characteristics of thin section, small volume, light weight, easy conforming, easy realization of dual polarization and convenient integration design with the TR assembly; the microstrip antenna and the TR assembly are integrated into one, which can improve the signal receiving resolution performance of the radar product, reduce the size after the device connection, realize the miniaturization and light weight of the volume.

Description

Technical Field

[0001] The present invention belongs to the field of radio frequency microwave technology, and more specifically, relates to an integrated structure of a microstrip antenna and a TR component and an integration method of a microstrip antenna and a TR component. Background Art

[0002] Synthetic Aperture Radar (SAR) is a high-resolution imaging radar that can produce high-resolution radar images similar to optical photography in extremely low visibility conditions. SAR utilizes a small antenna that moves at a constant speed along a long linear array, radiating coherent signals. Echoes received at different locations are coherently processed to achieve high-resolution imaging. Driven by demand, SAR is developing towards high-resolution and multi-polarization technologies. Multi-polarization SAR can provide richer target characteristics, enhancing target recognition, classification, and anti-interference capabilities.

[0003] Widely used in active phased array radars, TR components primarily amplify transmitted and received signals, as well as control signal amplitude and phase. They consist of a low-noise amplifier (LNA), a power amplifier (PA), a limiter, and a phase shifter. TR components (T / R) are short for Transmitter and Receiver (T / R). A T / R component typically refers to the portion between the antenna and the antenna in a wireless transceiver system. One end of the T / R component is connected to the antenna, and the other end is connected to the intermediate frequency (IF) processing unit, forming a wireless transceiver system. Its functions include amplifying, phase shifting, and attenuating signals.

[0004] At present, when the antenna size of the synthetic aperture missile-borne radar seeker is given, the millimeter wave band has a larger gain and a narrower beam width compared to the microwave band. In order to obtain a given gain and narrow beam, a smaller antenna can be used.

[0005] Currently, there are three common methods for connecting antennas and TR components: (1) Cable connection: The component and antenna are connected via a coaxial cable, which is large in size and high in cost;

[0006] (2) KK connection: The TR component and the antenna are connected via a KK coaxial cable connector, which is large in size and high in cost. Summary of the Invention

[0007] The object of the present invention is to provide an integrated structure of a microstrip antenna and a TR component, which integrates the microstrip antenna and the TR component into one, thereby reducing the size and manufacturing cost of the connected devices.

[0008] In the first aspect, to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide an integrated structure of a microstrip antenna and a TR component, including: a TR component and a microstrip antenna, the TR component includes a box body, and the antenna RF interface end at the front end of the box body is provided with a multi-channel insulator pin connector; the microstrip antenna is integrated into the antenna RF interface end, and the microstrip antenna is provided with RF signal holes corresponding to the number and position of the insulator pin connectors, and the insulator pin connector passes through the RF signal hole and is sintered together with the microstrip antenna.

[0009] As another embodiment of the present application, the box body includes a base plate, an upper box cover and a lower box cover, and the upper and lower surfaces of the base plate are respectively provided with an upper cavity and a lower cavity, and the upper box cover and the lower box cover respectively cover the upper cavity and the lower cavity; eight channels are respectively provided in the upper cavity and the lower cavity, corresponding to the 16-channel insulator pin connector provided at the antenna RF interface end.

[0010] As another embodiment of the present application, the upper cavity is provided with a sunken step for installing the upper box cover, and the lower cavity is provided with a sunken step for installing the lower box cover. The upper box cover and the lower box cover are installed on the corresponding sunken steps, and the upper box cover and the lower box cover are flush with the corresponding surface of the bottom plate.

[0011] As another embodiment of the present application, the eight channels in the upper cavity and the eight channels in the lower cavity are staggered in vertical direction.

[0012] As another embodiment of the present application, the microstrip antenna is sintered inside the antenna RF interface end, and the antenna RF interface end is provided with a socket for plugging the insulator pin connector.

[0013] As another embodiment of the present application, the rear end of the box body is provided with a network radio frequency interface and a TR control interface.

[0014] As another embodiment of the present application, two groups of network radio frequency interfaces are respectively provided on both sides of the TR control interface.

[0015] As another embodiment of the present application, the TR control interface is a micro rectangular electrical connector.

[0016] As another embodiment of the present application, the network radio frequency interface is provided with a radio frequency coaxial connector.

[0017] In a second aspect, the present invention provides a method for integrating a microstrip antenna with a TR component. Based on the integrated structure of the microstrip antenna and the TR component, the method includes:

[0018] Sintering the microstrip antenna onto the box of the TR component;

[0019] The test tool is used for calibrating the concentricity of the insulator pin connector which needs to be welded;

[0020] The insulator pin connector is welded with the microstrip antenna;

[0021] The test tool is provided with a concentric calibration hole coaxial with the insulator pin connector.

[0022] The microstrip antenna and TR assembly integrated structure and integrated method have the advantages that compared with the prior art, the microstrip antenna has the characteristics of thin profile, small volume, light weight, easy conforming, easy realization of dual polarization, and convenient integration design with the TR assembly; the microstrip antenna and the TR assembly are integrated, the size of the device after connection is reduced, the volume miniaturization and the weight lightness are realized, the volume miniaturization and the weight lightness of the overall device after connection are realized, and the manufacturing cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0024] Figure 1 The front structure diagram of the microstrip antenna and TR assembly integrated structure provided by the embodiment of the present application Figure 1 ;

[0025] Figure 2 The front structure diagram of the microstrip antenna and TR assembly integrated structure provided by the embodiment of the present application Figure 2 ;

[0026] Figure 3 The front structure diagram of the microstrip antenna and TR assembly integrated structure provided by the embodiment of the present application

[0027] Figure 4 The front structure diagram of the microstrip antenna and TR assembly integrated structure provided by the embodiment of the present application

[0028] Figure 5 The front structure diagram of the microstrip antenna and TR assembly integrated structure provided by the embodiment of the present application Figure 1 ;

[0029] Figure 6 The front structure diagram of the microstrip antenna and TR assembly integrated structure provided by the embodiment of the present application Figure 2 ;

[0030] Figure 7 A schematic diagram of the three-dimensional structure of the test tooling used in an embodiment of the present invention.

[0031] In the figure: 1. Box body; 11. Upper box cover; 12. Bottom plate; 13. Lower box cover; 14. Isolation baffle; 15. Upper cavity; 16. Lower cavity; 17. Second alignment hole; 2. Insulator pin connector; 3. Microstrip antenna; 31. RF signal hole; 4. Network RF interface; 5. TR control interface; 6. Test fixture; 61. First alignment hole; 62. Concentric calibration hole. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] Please also refer to Figures 1 to 6 The integrated structure of a microstrip antenna and TR assembly provided by the present invention is now described. The integrated structure includes a TR assembly and a microstrip antenna 3. The TR assembly includes a housing 1. A multi-channel insulator pin connector 2 is provided at the antenna RF interface end at the front end of the housing 1. The microstrip antenna 3 is integrated into the antenna RF interface end. The microstrip antenna 3 is provided with RF signal holes 31 corresponding in number and position to the insulator pin connectors 2. The insulator pin connectors 2 pass through the RF signal holes 31 and are sintered together with the microstrip antenna 3.

[0034] The integrated structure of the microstrip antenna and TR component provided by the present invention has, compared with the prior art, a thin profile, a small volume, a light weight, easy conformality, easy realization of dual polarization, and convenient integration design with the TR component. The microstrip antenna 3 and the TR component are integrated into one, which reduces the size of the connected device, achieves miniaturization and light weight, thereby achieving miniaturization and light weight of the entire device after connection, and can also achieve reduction in manufacturing costs.

[0035] At the same time, due to the integration of microstrip antenna and TR components, a given gain and narrow beam can be obtained, which improves the signal reception resolution performance of radar products.

[0036] Among them, the microstrip antenna 3 provided in this embodiment is an H-type coupled feed antenna with a four-layer hybrid board and a double-sided board. According to the number of channels of the integrated TR component, a corresponding number of RF signal holes 31 are set, and the RF signal holes 31 are protected against short circuits.

[0037] As a specific implementation of the embodiment of the present invention, please refer to Figure 1 、 Figure 3 and Figure 5The microstrip antenna 3 is sintered inside the antenna RF interface, which is provided with a socket for receiving the insulator pin connector 2. Sintering the microstrip antenna 3 inside the box body 1 can reduce the size of the connected device, achieving miniaturization and lightness. This, in turn, reduces the size and weight of the entire connected device, and also reduces manufacturing costs.

[0038] As a specific embodiment of the box body 1, please refer to Figures 3 to 6 The box body 1 includes a base plate 12, an upper cover 11, and a lower cover 13. An upper cavity 15 and a lower cavity 16 are defined on the upper and lower surfaces of the base plate 12, respectively. The upper and lower covers 11 and 13 cover the upper and lower cavities 15 and 16, respectively. Eight channels are defined within each of the upper and lower cavities 15 and 16, corresponding to the 16-channel insulator pin connector 2 at the antenna RF interface. Adjacent channels are separated by isolation bars 14.

[0039] Based on the above-mentioned box body 1, as a specific implementation of the embodiment of the present invention, please refer to Figures 1 to 6 The upper cavity 15 is provided with a step for mounting the upper cover 11, and the lower cavity 16 is provided with a step for mounting the lower cover 13. The upper and lower covers 11 and 13 are mounted on the corresponding steps, and the upper and lower covers 11 and 13 are flush with the corresponding surfaces of the bottom plate 12. The provision of the steps allows the upper and lower covers 11 and 13 to sink into the upper and lower cavities 15 and 16, reducing the volume of the box body 1 and facilitating the miniaturization of the TR assembly.

[0040] On the basis of the above-mentioned box body 1, as an improved embodiment of the box body 1, refer to Figures 3 to 6 The eight channels of the upper cavity 15 and the eight channels in the lower cavity 16 are staggered in vertical arrangement, for a total of 16 channels of the insulator pin connector 2 .

[0041] Based on the above-mentioned specific box body 1, as a modified embodiment of the box body 1, please refer to Figure 2 、 Figure 4 and Figure 6 The rear end of the box body 1 is provided with a network radio frequency interface 4 and a TR control interface 5.

[0042] Optionally, see Figure 2 、 Figure 4 and Figure 6 , two groups of network radio frequency interfaces 4 are respectively provided on both sides of the TR control interface 5.

[0043] Optionally, see Figure 2 、 Figure 4 and Figure 6 The TR control interface 5 is a micro rectangular electrical connector. For example, a J30J-37TJS-M micro rectangular electrical connector is selected.

[0044] As a specific implementation of the embodiment of the present invention, please refer to Figure 2 、 Figure 4 and Figure 6 The network radio frequency interface 4 is provided with a radio frequency coaxial connector, for example, an SSMP series radio frequency coaxial connector.

[0045] Based on the same inventive concept, see Figures 1 to 7 The present invention provides a method for integrating a microstrip antenna 3 with a TR component. Based on the integrated structure of the microstrip antenna 3 and the TR component, the method includes:

[0046] Sintering the microstrip antenna 3 onto the box body 1 of the TR component;

[0047] Using the test fixture 6 to calibrate the concentricity of the insulator pin connector 2 to be welded;

[0048] Solder the insulator pin connector 2 and the microstrip antenna 3 together;

[0049] The test fixture 6 is provided with a concentric calibration hole 62 coaxial with the insulator pin connector 2 .

[0050] As an improved implementation of the test fixture 6, a first alignment hole 61 is provided at both ends of the test fixture 6, which is connected to the second alignment hole 17 corresponding to the box body 1 through a pin passing through the first alignment hole 61, thereby ensuring concentricity with the insulator pin connector 2 and improving the positioning accuracy of the insulator pin connector 2.

[0051] As an improved implementation of the test fixture 6, the test fixture 6 is provided with concentric calibration holes 62 corresponding to the positions and quantities of the insulator pin connectors 2 on the TR assembly, among which only two concentric calibration holes 62 are provided with positioning holes for adapting to the insulator pin connectors 2.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. The integrated structure of microstrip antenna and TR component is characterized by: include: A TR component, the TR component comprising a box body (1), wherein the antenna radio frequency interface end at the front end of the box body (1) is provided with a multi-channel insulator pin connector (2); as well as A microstrip antenna (3) is integrated at the antenna radio frequency interface end, the microstrip antenna (3) is provided with radio frequency signal holes (31) corresponding in number and position to the insulator pin connectors (2), the insulator pin connectors (2) pass through the radio frequency signal holes (31) and are sintered together with the microstrip antenna (3); The box body (1) comprises a bottom plate (12), an upper box cover (11) and a lower box cover (13); an upper cavity (15) and a lower cavity (16) are respectively provided on the upper and lower surfaces of the bottom plate (12); the upper box cover (11) and the lower box cover (13) respectively cover the upper cavity (15) and the lower cavity (16); eight channels are respectively provided in the upper cavity (15) and the lower cavity (16), corresponding to the 16-channel insulator pin connector (2) provided at the antenna radio frequency interface end; The eight channels of the upper cavity (15) and the eight channels in the lower cavity (16) are arranged in an up-down staggered manner.

2. The integrated structure of microstrip antenna and TR assembly according to claim 1, characterized in that: The upper cavity (15) is provided with a sinking step for mounting the upper box cover (11), and the lower cavity (16) is provided with a sinking step for mounting the lower box cover (13). The upper box cover (11) and the lower box cover (13) are mounted on the corresponding sinking steps, and the upper box cover (11) and the lower box cover (13) are flush with the corresponding surfaces of the bottom plate (12).

3. The integrated structure of microstrip antenna and TR assembly according to claim 1, characterized in that: The microstrip antenna (3) is sintered inside the antenna radio frequency interface end, and the antenna radio frequency interface end is provided with a socket for plugging the insulator pin connector (2).

4. The integrated structure of microstrip antenna and TR assembly according to claim 1, characterized in that: The rear end of the box body (1) is provided with a network radio frequency interface (4) and a TR control interface (5).

5. The integrated structure of microstrip antenna and TR assembly according to claim 4, characterized in that: Two groups of network radio frequency interfaces (4) are respectively provided on both sides of the TR control interface (5).

6. The integrated structure of microstrip antenna and TR assembly according to claim 4, characterized in that: The TR control interface (5) is a micro rectangular electrical connector.

7. The integrated structure of microstrip antenna and TR assembly according to claim 4, characterized in that: The network radio frequency interface (4) is provided with a radio frequency coaxial connector.

8. A method for integrating a microstrip antenna with a TR component, based on the microstrip antenna (3) and TR component integrated structure according to any one of claims 1 to 7, characterized in that: The integrated method includes: Sintering the microstrip antenna (3) onto the box body (1) of the TR component; Using a test fixture (6) to calibrate the concentricity of an insulator pin connector (2) to be welded; Welding the insulator pin connector (2) and the microstrip antenna (3) together; The test fixture (6) is provided with a concentric calibration hole (62) coaxial with the insulator pin connector (2).

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