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Absorbing and transparent integrated frequency selection surface structure

A frequency selective surface, integrated technology, applied in the direction of the radiation unit cover, electrical components, antenna components, etc., to achieve the effect of maintaining stable electromagnetic wave transmission characteristics

Pending Publication Date: 2018-07-10
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, it is very difficult to ensure that the constant and small unit size can meet the wave transmission / absorption characteristics in a wide frequency band.

Method used

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  • Absorbing and transparent integrated frequency selection surface structure
  • Absorbing and transparent integrated frequency selection surface structure
  • Absorbing and transparent integrated frequency selection surface structure

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Embodiment Construction

[0023] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] Such as figure 1 , figure 2 and image 3 As shown, the absorption-permeable integrated frequency selective surface structure with two absorption frequency bands of the present invention consists of a curved strip metal patch 1, an Isola FR408 square dielectric substrate 2, a chip resistor 3 with a resistance value of 62 ohms of a model 0603, and an air layer 4. It is composed of F4B square dielectric substrate 5, square metal patch 6 and square ring metal patch 7. The absorbing and permeable integrated frequency selective surface structure with two absorption frequency bands of the present invention comprises an upper lossy layer, an intermediate air layer and a lower lossless layer, and the upper layer lossy layer is aligned with the center of symmetry of the lower lossless layer.

[0025] Such as figure 2 As sho...

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Abstract

The present invention discloses an absorbing and transparent integrated frequency selection surface structure. The structure comprises two absorbing frequency bands, and the structure is formed by a bending strip metal patch, a square dielectric substrate with a first type, a patch resistor, an air layer, a square dielectric substrate with a second type, a square metal patch and a square ring metal patch. The structure allows the upper and lower portions of a transparent frequency band to have the absorbing frequency bands while ensuring the low-insertion loss transparent wave of a broadband in a C wave band to take a tiny dimension to achieve electromagnetic wave transmission control of the broadband, so that the absorbing and transparent integrated frequency selection surface structure is very suitable for combination with structures such as skin, housings and protective covers with most of thicknesses to develop the electrical performances of the absorbing and transparent integratedfrequency selection surface structure; and moreover, when an incident angle is 0-30 degrees, the electromagnetic wave transmission feature is stable.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic fields and microwaves, and in particular relates to an absorbing and penetrating integrated frequency selective surface structure. Background technique [0002] In modern warfare, the radar antenna system on the aircraft is an important source of scattering. It has a high radar cross section (RCS) in certain frequency and viewing angle ranges. Reducing the RCS of the antenna system is an important issue for the aircraft to achieve stealth. Frequency Selective Surface (FSS) is a two-dimensional structure composed of a large number of periodically arranged metal patch units with specific shapes or gaps between metal planes. When the incident electromagnetic wave frequency is at the resonant frequency of the unit, FSS It shows total reflection (patch type) or total transmission (aperture type), and electromagnetic waves of other frequencies can pass through FSS (patch type) or be totally refl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00H01Q1/42
CPCH01Q1/422H01Q15/0026
Inventor 高瑾杨阳何小祥贾明乾胡文秀周春
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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