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A wideband frequency reconfigurable FSS radome

A radome and frequency technology, applied in the field of broadband frequency reconfigurable FSS radome, to achieve the effects of good wide-angle incidence characteristics, good wide-angle incidence range, and high transmittance

Inactive Publication Date: 2019-01-04
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0005] It can be seen from the above existing technologies that the design of continuously adjustable high-transmittance FSS within a wide band is still a big challenge, so it is necessary to further propose a new high-transmittance FSS unit design and frequency-domain adjustment-sensitive active The loading structure can reconfigure the unit's passband FM performance, while taking into account the low profile, wide-angle incidence and polarization insensitivity of the FSS radome.

Method used

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  • A wideband frequency reconfigurable FSS radome
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  • A wideband frequency reconfigurable FSS radome

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0029] This embodiment provides a broadband frequency reconfigurable FSS radome, its top view is as follows figure 1 As shown, the FSS ultra-thin unit 2 is used as the compact unit, which is arranged periodically in M*N, where M=6, N=10;

[0030] The schematic diagram of the plane structure and the three-dimensional structure of the FSS ultra-thin unit 2 are as follows: Figure 2-3 As shown, it includes a top layer metal patch and a dielectric substrate 1, the top layer metal patch is located on the upper surface of the dielectric substrate 1, and the thickness of the dielectric substrate 1 is 1mm; the top layer metal patch includes a special-shaped resonant square ring 3 and a fractal square patch 4, The fractal square patch 4 is located inside the special-shaped resonant square ring 3; the special-shaped resonant square ring 3 has rectangular protrus...

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Abstract

The invention discloses a wideband frequency reconfigurable FSS radome, belonging to the technical field of electromagnetic wave control. A FSS ultra-thin unit is compactly combined as a unit, and that FSS ultra-thin unit is periodically arranged as M*N; FSS ultra-thin element comprise a special-shaped resonant square ring, a fractal square patch and a dielectric substrate; The fractal square patch is located in the inside of the special-shaped resonant square ring. A gap is left between the special-shaped resonant square ring and the fractal square patch, and a varactor is loaded in the center of the gap around the ring. The radome of the invention has the characteristics of high transmittance, wide angle incidence and polarization insensitivity, and can be used in the fields of radar, ultra-wideband antenna, aircraft skin, multi-channel communication, high-purity radiation and the like.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic wave control, and in particular relates to a broadband frequency reconfigurable FSS radome with high transmittance, wide-angle incidence and polarization insensitivity characteristics. Background technique [0002] Frequency Selective Surface (FSS) is a two-dimensional electromagnetic periodic structure. From the perspective of spatial filtering phenomenon, FSS is essentially a spatial filter, which has selective filtering characteristics for electromagnetic waves with different operating frequencies, incident angles and polarization states. By adjusting certain parameters, the band-pass or band-stop of FSS in the working frequency band can be realized, and almost all the energy outside the band is totally reflected or transmitted. The research and development of FSS technology in the fields of communication, target stealth and anti-jamming is very rapid. Its typical applications include:...

Claims

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Application Information

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IPC IPC(8): H01Q1/42
CPCH01Q1/42
Inventor 丁霄吕彦贺陈传升王秉中
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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