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Impedance loading based P-band radar absorber

A technology of radar absorption and impedance loading, which is applied in the field of stealth, can solve the problems of poor absorption performance of absorbing materials and narrow absorbing bandwidth, and achieve the effect of reducing reflectivity and increasing bandwidth

Inactive Publication Date: 2018-09-04
BEIJING INST OF ENVIRONMENTAL FEATURES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The shortcomings of the existing technology: (1) The absorption performance of the P-band absorbing material is poor; (2) The absorbing bandwidth of the absorbing material in the P-band is too narrow

Method used

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  • Impedance loading based P-band radar absorber
  • Impedance loading based P-band radar absorber

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Embodiment Construction

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0025] figure 1 It is a schematic diagram of the main components of the P-band radar absorber based on impedance loading according to the embodiment of the present invention. Such as figure 1 As shown, the P-band radar absorber based on impedance loading includes: a skin layer 1 , an impedance layer 2 , a spacer layer 3 and a metal back pla...

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Abstract

The invention discloses an impedance loading based P-band radar absorber, and relates to the technical field of stealth. The impedance loading based P-band radar absorber according to an embodiment ofthe present invention includes: a skin layer, an impedance layer, a spacer layer, and a metal back plate which are disposed in sequence; the impedance layer includes a frequency selection surface andresistors disposed on the frequency selection surface; when electromagnetic waves irradiate onto the frequency selection surface, the electromagnetic waves having a frequency within the passband bandwidth pass, and the electromagnetic waves with frequencies being out of the passband bandwidth are reflected. The embodiment of the invention can overcome the difficulty of the absorbing property andthe absorbing bandwidth of the material, and has good absorbing performance and absorbing bandwidth.

Description

technical field [0001] The invention relates to the field of stealth technology, in particular to a P-band radar absorber based on impedance loading. Background technique [0002] At present, with the continuous development of radar detection technology, the stealth penetration of new stealth aircraft in the P-band is becoming more and more important. The E-2D "Advanced Hawkeye" early warning aircraft of the United States, the pavement claw phased array radar and the Voronezh long-range early warning radar of Russia all work in the P-band. great. In the low-frequency band (generally refers to radio waves with a frequency below 2000MHz), the size of the target is comparable to the wavelength of the radar, and the backscattering of the target is non-directional, thereby greatly reducing the stealth effect of the target. [0003] Facing the threat of intensive detection by meter-wave radar, it is necessary to intensify research on low-frequency stealth technology, overcome th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q17/00H01Q15/00G01S7/38
CPCG01S7/38H01Q15/0013H01Q17/00
Inventor 戚开南何伟汪勇峰韦笑
Owner BEIJING INST OF ENVIRONMENTAL FEATURES
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