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Novel metal back cavity dual-polarization broadband radiation unit

A radiating unit, dual-polarization technology, applied in the direction of radiating element structure, electrical components, antenna grounding switch structure connection, etc., can solve the problem that the anti-interference method cannot improve the antenna design, and achieves good electromagnetic compatibility and backscattering. Low, reducing the effect of coupling effects

Active Publication Date: 2016-06-22
LEIHUA ELECTRONICS TECH RES INST AVIATION IND OF CHINA
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AI Technical Summary

Problems solved by technology

At the same time, the radar antenna with fixed polarization cannot improve the antenna design in the way of radar anti-jamming

Method used

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  • Novel metal back cavity dual-polarization broadband radiation unit

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Embodiment Construction

[0016] A new type of metal-backed dual-polarization broadband radiating element, such as figure 1 shown, including:

[0017] The first radiating medium plate 1, the second radiating medium plate 2, the third feeding medium plate 3, the fourth feeding medium plate 4, and the metal back cavity 5 are arranged sequentially from top to bottom; the upper surface of the first radiating medium plate 1 has a second A square radiation patch 6, the upper surface of the second radiation medium plate 2 has a second square radiation patch 7; the upper surface of the third feeding medium 3 has a fork-shaped first microstrip line 8; the fourth feeding medium 4 There is a fork-shaped second microstrip line 9 on the upper surface; the first microstrip line 8 and the second microstrip line 9 are orthogonal; the shielding plate 10 is bonded to the lower surface of the feeding medium 4, and the shielding plate 10 is opened There are two mutually orthogonal rectangular slits; the first microstrip ...

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Abstract

The invention belongs to the microwave antenna technical field and provides a novel metal back cavity dual-polarization broadband radiation unit. The novel metal back cavity dual-polarization broadband radiation unit has the advantages of low profile, high isolation degree, high polarization purity and wide bandwidth. According to technical schemes of the invention, the novel metal back cavity dual-polarization broadband radiation unit includes a radiation medium plate 1, a radiation medium plate 2, a radiation medium plate 3, a radiation medium plate 4 and a metal back cavity 5; a square radiation patch 6 is arranged at the upper surface of the radiation medium plate 1; a square radiation patch 7 is arranged on the upper surface of the radiation medium plate 2; a microstrip line 8 is arranged on the upper surface of the radiation medium plate 3; a microstrip line 9 is arranged on the upper surface of the radiation medium plate 4; the microstrip line 8 is orthogonal to the microstrip line 9; a shielding plate 10 is bonded to the lower surface of the radiation medium plate 4; two orthogonal rectangular slits are formed in the shielding plate 10; and the microstrip line 8, the microstrip line 9 and the shielding plate 10 form an one-input two-output power divider; and two orthogonal oblong blind holes are formed at the center of the upper surface of the metal back cavity 5.

Description

technical field [0001] The invention belongs to microwave antenna technology. Background technique [0002] Facing the increasingly complex electromagnetic environment, the requirements for airborne radar antennas are becoming more and more stringent. In order to improve the radar detection and early warning time, the radar must have high gain and transmitter power; in order to enhance its own stealth performance, the RCS of the radar antenna has also become one of the research hotspots. With the deepening of the research on the traditional single-polarization antenna, its development has gradually entered the bottleneck stage. At this time, the antenna with dual-polarization constitution came into being. [0003] For traditional single-polarization antennas, no matter in the process of active detection or passive guidance, the enemy cannot know the polarization of the enemy target, and the polarization mismatch that occurs when the antenna transmits or receives greatly lim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/50H01Q1/52H01Q19/10
Inventor 张兆成孙丹尤立志
Owner LEIHUA ELECTRONICS TECH RES INST AVIATION IND OF CHINA
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