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Ultra-wideband wave-absorbing structure for reducing RCS (radar cross section) of antenna

An ultra-broadband, wave structure technology, applied to antennas, electrical components, etc., can solve problems such as excessive influence on antenna performance and difficult design, and achieve the effects of improved wave absorption performance, stable performance, and reduced radar cross section

Pending Publication Date: 2022-04-12
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, most of the designs have the following disadvantages: First, only narrow-band RCS reduction or shallow RCS reduction can be achieved; second, the performance of the antenna itself is too much affected. This makes the existing design difficult to meet practical applications needs

Method used

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  • Ultra-wideband wave-absorbing structure for reducing RCS (radar cross section) of antenna
  • Ultra-wideband wave-absorbing structure for reducing RCS (radar cross section) of antenna
  • Ultra-wideband wave-absorbing structure for reducing RCS (radar cross section) of antenna

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Embodiment

[0048] figure 1 It is a schematic cross-sectional structure diagram of an ultra-broadband absorbing structure used for antenna RCS reduction in the present invention, such as figure 1 As shown, it includes a surface skin dielectric layer, an impedance matching dielectric layer, an impedance type frequency selective surface, an impedance type frequency selective surface substrate, a dielectric layer and a conductive reflection layer arranged from top to bottom. The surface skin dielectric layer, the impedance matching dielectric layer, the impedance type frequency selective surface, the impedance type frequency selective surface substrate, the dielectric layer and the conductive reflective layer are formed by pressing through a vacuum hot pressing process. figure 2 It is a schematic diagram of an ultra-broadband absorbing structure for antenna RCS reduction in the present invention, image 3 is a schematic diagram of the impedance type frequency selective surface structure un...

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Abstract

The invention discloses an ultra-wideband wave-absorbing structure for reducing the RCS of an antenna. The ultra-wideband wave-absorbing structure comprises a surface skin dielectric layer, an impedance matching dielectric layer, an impedance type frequency selective surface, an impedance type frequency selective surface substrate, a dielectric layer and a conductive reflecting layer which are arranged from top to bottom, the impedance type frequency selective surface is composed of N * N conductive units, each conductive unit comprises a conductive outer circular ring and a conductive inner circular ring which are concentrically arranged, and each conductive circular ring is uniformly loaded with four resistors. According to the ultra-wideband wave-absorbing structure for reducing the RCS of the antenna, the resistance loading double circular rings are adopted as the impedance type frequency selective surface, so that the RCS of the antenna can be reduced, the purpose of hiding the antenna is achieved, and the ultra-wideband wave-absorbing structure is stable in performance and has a wide practical application prospect.

Description

technical field [0001] The invention relates to the technical field of electromagnetic wave absorption, in particular to an ultra-broadband wave-absorbing structure used for antenna RCS reduction. Background technique [0002] The antenna is an important part of the signal transmission and reception of modern electronic equipment. In the field of stealth technology, the RCS reduction of the antenna has a direct impact on reducing the overall system RCS in modern electronic countermeasures. At the same time, when reducing the RCS of the antenna, it is also necessary to ensure that the antenna functions well. [0003] There are four common RCS reduction techniques, the first is to load ferrite absorbing material, by using the ferrite material as the antenna substrate or adding a ferrite covering layer on the antenna; the second is to carry out the antenna structure Fine-tuning, using the bionic principle, split structure, shrinking the floor, etc. to reduce the RCS of the ant...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q17/00H01Q15/00
Inventor 黄小忠麻晢乂培姜超
Owner CENT SOUTH UNIV
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