A high-performance microstrip conformal data link antenna

Abstract

This invention relates to a high-performance microstrip conformal data link antenna, comprising a first data link PCB, a second data link PCB, a third data link PCB, and a fourth data link PCB, which are connected and fixed by screws. Radiation patches are provided on both the front and back sides of the first data link PCB, with first through holes formed around the perimeter of the radiation patches. A power divider assembly is disposed on the third data link PCB. The second and fourth data link PCBs are both metal ground planes. This invention improves the antenna's anti-interference capability and signal reception quality in complex electromagnetic environments, ensuring reliable communication between the missile and the control system; enhances the antenna's performance stability in extreme environments, meeting the missile system's requirements for high reliability and long lifespan; and improves the overall performance and combat effectiveness of the missile system by optimizing antenna size, weight, and power consumption.

Description

Technical Field

[0001] This utility model relates to the field of antennas, and in particular to a high-performance microstrip conformal data link antenna. Background Technology

[0002] With the rapid development of modern missile technology, the importance of missile-borne data link antennas, as key equipment for information transmission between missiles and control systems, is becoming increasingly prominent. Modern missile systems place higher demands on the real-time performance, reliability, and anti-jamming capabilities of data transmission. Missile-borne data link antennas not only need high-speed data transmission capabilities but also need to maintain a stable communication link in complex electromagnetic environments. Therefore, antenna design must comprehensively consider multiple technical indicators such as frequency range, polarization, radiation pattern, gain, and VSWR.

[0003] In recent years, significant progress has been made in microwave communication technology, antenna design theory, electromagnetic simulation software, and materials science. These technological advancements have provided more powerful tools and methods for designing missile-borne data link antennas. For example, electromagnetic simulation software can accurately predict antenna performance and optimize antenna structure; the application of high-performance composite materials can improve the environmental adaptability and reliability of antennas. However, while existing microstrip conformal antenna technology meets the performance requirements of missile-borne data link antennas to a certain extent, some technical problems and shortcomings remain: 1. High difficulty in radiation pattern optimization: Maintaining high gain within a ±70° range is one of the important technical indicators of missile-borne data link antennas. However, in existing technologies, optimizing the antenna's radiation pattern is quite difficult, especially maintaining stable gain characteristics over a wide angle range, requiring more refined design and simulation optimization. 2. Impedance matching and VSWR optimization: Impedance matching is crucial for ensuring efficient energy transmission between the antenna and the transmission line. However, at high frequencies, the antenna's impedance characteristics are easily affected by various factors, leading to an excessively high VSWR, which affects the antenna's transmission efficiency. While existing technologies can reduce the VSWR by designing broadband matching networks and using electromagnetic simulation software to optimize impedance characteristics, the optimization process is complex and time-consuming. 3. Polarization Stability: Circularly polarized antennas exhibit strong resistance to multipath interference in complex environments, making them suitable for missile-borne communication applications. However, in existing technologies, the polarization characteristics of antennas are easily affected over a wide angular range, leading to decreased polarization stability and impacting signal reception quality. 4. Environmental Adaptability: Missile-borne antennas need to maintain stable performance in extreme environments. However, current technologies still require improvement in antenna performance regarding high and low temperature resistance, vibration and shock resistance, etc., to meet the increasingly stringent requirements of missile-borne environments. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a high-performance microstrip conformal data link antenna, thus solving the deficiencies of the prior art.

[0005] The objective of this utility model is achieved through the following technical solution: a high-performance microstrip conformal data link antenna, comprising a first data link PCB, a second data link PCB, a third data link PCB, and a fourth data link PCB, the four data link PCBs being connected and fixed by screws; radiating patches are provided on both the front and back sides of the first data link PCB, and first through holes are opened around the radiating patches; a power divider assembly is provided on the third data link PCB; the second data link PCB and the fourth data link PCB are both metal grounds.

[0006] Metal components are provided around the radiating patch on the front of the first data link PCB. Adjusting the shape and structure of the metal components can widen the beamwidth of the antenna.

[0007] Grounding short-circuit posts are provided on both sides of the power divider assembly traces, and the grounding short-circuit posts are in contact with the second data link PCB through a second through hole provided on the second data link PCB.

[0008] The first data link PCB, the second data link PCB, the third data link PCB, and the fourth data link PCB, along with the radiating patch, are square in shape, with the four corners of the radiating patch facing the four sides of the first data link PCB.

[0009] The metal components are located at the four corners of the first data link PCB, and the metal components are mushroom-shaped.

[0010] This invention has the following advantages: a high-performance microstrip conformal data link antenna improves the antenna's anti-interference capability and signal reception quality in complex electromagnetic environments, ensuring reliable communication between the missile and the control system; it enhances the antenna's performance stability in extreme environments, meeting the missile system's requirements for high reliability and long lifespan; and by optimizing antenna size, weight, and power consumption, it improves the overall performance and combat effectiveness of the missile system. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the exploded structure of this utility model; In the diagram: 1-First data link PCB, 2-Second data link PCB, 3-Third data link PCB, 4-Fourth data link PCB, 5-Radiating patch, 6-Power divider assembly, 7-First through hole, 8-Metal component, 9-Ground shorting post, 10-Second through hole. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the detailed description of the embodiments of this application provided below with reference to the accompanying drawings is not intended to limit the scope of protection of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application. The present invention will be further described below with reference to the accompanying drawings.

[0013] like Figure 1 As shown, this utility model specifically relates to a high-performance microstrip conformal data link antenna. First, by optimizing the antenna's radiation pattern and polarization characteristics, the antenna's anti-interference capability and signal reception quality in complex electromagnetic environments are improved. Second, the use of a microstrip conformal antenna design and high / low temperature resistant materials enhances the antenna's performance stability in extreme environments.

[0014] It includes a first data link PCB1, a second data link PCB2, a third data link PCB3, and a fourth data link PCB4, which are connected and fixed by screws. Radiation patches 5 are provided on both the front and back of the first data link PCB1, and first through holes 7 are provided around the radiation patches 5. A power divider assembly 6 is provided on the third data link PCB4. The second data link PCB2 and the fourth data link PCB4 are both metal grounds.

[0015] A microstrip antenna composed of double-layer radiating patches 5 achieves two resonant points at similar frequencies, thereby expanding the antenna bandwidth. To achieve good circular polarization performance, a dual-point feeding method is adopted. The power divider assembly 6 is a Wilkinson power divider, which is used for feeding. The Wilkinson power divider is implemented using striplines, and grounding short-circuit posts 9 are set on both sides of the Wilkinson power divider trace. The grounding short-circuit posts 9 are in contact with the second data link PCB2 of the metal ground through the second through hole 10, which can play a good shielding role, ensuring a 1:1 power division ratio at the height of the power divider and being unaffected by environmental interference.

[0016] Furthermore, the first data link PCB1, the second data link PCB2, the third data link PCB3, and the fourth data link PCB4, as well as the radiating patch 5, are square in shape, with the four corners of the radiating patch 5 facing the four sides of the first data link PCB1. Mushroom-shaped metal parts 8 are provided around the radiating patch 5 on the front of the first data link PCB1. When the antenna radiates, an induced current is generated on the metal parts 8. By adjusting the shape and structure of the metal parts, the radiation field generated by the induced current can be superimposed on the antenna radiation field, thus widening the antenna beamwidth. As a result, the antenna can have a gain of -1dBi even at a low elevation angle of 20°.

[0017] The working principle of this utility model is as follows: Launch process: The data link antenna transmits missile status and position information to the control system by emitting electromagnetic waves. During launch, the antenna converts electrical signals into electromagnetic waves and radiates them at a specific frequency and polarization.

[0018] Reception process: The antenna receives instructions or data from the control system and converts the received electromagnetic waves into electrical signals for processing by the missile's electronic system.

[0019] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the form disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and improvements, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A high-performance microstrip conformal data link antenna, characterized in that: It includes a first data link PCB (1), a second data link PCB (2), a third data link PCB (3), and a fourth data link PCB (4), which are connected and fixed by screws; a radiating patch (5) is provided on both the front and back of the first data link PCB (1), and a first through hole (7) is provided around the radiating patch (5); a power divider assembly (6) is provided on the third data link PCB (4); the second data link PCB (2) and the fourth data link PCB (4) are both metal grounds; Mushroom-shaped metal parts (8) are provided around the radiating patch (5) on the front of the first data link PCB (1). Adjusting the shape and structure of the metal parts (8) can widen the beamwidth of the antenna.

2. The high-performance microstrip conformal data link antenna according to claim 1, characterized in that: Grounding short-circuit posts (9) are provided on both sides of the traces of the power divider assembly (6). The grounding short-circuit posts (9) are in contact with the second data link PCB (2) through the second through hole (10) provided on the second data link PCB (2).

3. The high-performance microstrip conformal data link antenna according to claim 2, characterized in that: The first data link PCB (1), the second data link PCB (2), the third data link PCB (3), the fourth data link PCB (4), and the radiating patch (5) are square in shape, with the four corners of the radiating patch (5) facing the four sides of the first data link PCB (1).

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