Frequency selection wave absorber

A technology of frequency selection and absorber, applied in the microwave field, can solve problems such as insufficient high-frequency absorbing rate and complex structure

Pending Publication Date: 2021-09-10
SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art, and propose a three-band wave-absorbing and dual-band wave-transmitting frequency selective absorber, which is used to solve the problem

Method used

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  • Frequency selection wave absorber
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Embodiment Construction

[0038] In order to make the objectives, technical solutions and advantages of the implementation of the application clearer, the technical solutions in the implementation modes of the application will be described in more detail below with reference to the drawings in the implementation modes of the application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the present application. The embodiments described below by referring to the figures are exemplary and are intended to explain the present application, and should not be construed as limiting the present application. Based on the implementation manners in this application, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts fall within the scope of protection of this application. Embodiments of the pr...

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Abstract

The invention belongs to the technical field of microwaves, and particularly relates to a frequency selection wave absorber. The wave absorber structurally comprises a loss layer and a transmission layer from top to bottom, wherein the loss layer comprises a first square ring metal patch, a circular ring metal patch, four rectangular metal patches welded with resistor elements, a first square dielectric plate and a second square ring metal patch; the transmission layer comprises a metal coating, and the metal coating is divided by a square ring gap and four right-angle gaps; and the first square ring metal patch and the rectangular metal patch cover the upper surface of the first square dielectric plate, and the second square ring metal patch covers the lower surface of the first square dielectric plate. The wave absorber has the advantages of being high in wave absorbing rate and low in loss, can be used for improving the stealth capacity of a broadband radar of aviation weaponry and solves the design problem of an airborne radio frequency aperture broadband radar stealth electromagnetic window of a high-stealth aircraft.

Description

technical field [0001] The application belongs to the field of microwave technology, and in particular relates to a frequency selective wave absorber. Background technique [0002] A frequency selective surface is a spatial filter that exhibits different characteristics of transmission, reflection, or absorption for electromagnetic waves of different frequency bands in space. The frequency-selective surface is optimized and restructured to form a frequency-selective absorber with a double-layer structure. The frequency selective absorber has the filter characteristics of low-loss wave transmission in the passband and significant wave absorption in the stopband. Compared to conventional frequency selective surfaces, out-of-band reflections can be avoided. While ensuring the overall performance of the protected equipment, the antenna radar cross-sectional area is reduced to achieve the purpose of stealth. [0003] Absorbing and penetrating integrated frequency selective sur...

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Application Information

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IPC IPC(8): H01Q15/00H01Q17/00
CPCH01Q15/0026H01Q17/00
Inventor 张澎鞠量孙一凡
Owner SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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