Cross spiral frequency selective surface (FSS) structure with dual band characteristics and construction method thereof

A helical structure, dual-band technology, applied in electrical components, antennas, etc., can solve the problems of complex structure, high manufacturing cost, inability to carry out fast and effective design, etc., to achieve the effect of improving the selection performance and speeding up the process

Active Publication Date: 2011-09-07
BEIHANG UNIV
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Problems solved by technology

In order to improve the selection characteristics, multi-layer plane cascading is the most commonly used method, ...

Method used

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  • Cross spiral frequency selective surface (FSS) structure with dual band characteristics and construction method thereof
  • Cross spiral frequency selective surface (FSS) structure with dual band characteristics and construction method thereof
  • Cross spiral frequency selective surface (FSS) structure with dual band characteristics and construction method thereof

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Embodiment Construction

[0040] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0041] The invention designs a double-band spiral FSS structure aiming at the radar system and the communication system, and realizes the multi-band characteristic. In this structure, the terminals of the large and small cross helix structures of the cross helix FSS structure layer structure unit are designed as S-shaped, which can make the structure coupling tight. Two kinds of isomorphic but different size crosses are used in the cross helix FSS structure layer The helical structure enables the generated passband to have dual-band characteristics, and the cross-helix FSS structure is formed by periodic extension of a cross-helix FSS structural unit on a plane.

[0042] Such as figure 2 As shown, the calculation model of the cross-helix FSS structure in the present invention is composed of the upper and lower layers of dielectric layers 1, 2 and the middle...

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Abstract

The invention discloses a cross spiral frequency selective surface (FSS) structure with dual band characteristics and a construction method thereof. The structure consists of an upper dielectric layer, a lower dielectric layer and an intermediate cross spiral FSS structure layer. The construction method comprises the following six steps of: 1, establishing structure units of the cross spiral FSS structure layer with the thickness of zero by using computer simulation technology (CST) software; 2, periodically extending the structure units towards directions X and Y to obtain the integrated 6*6 cross spiral FSS structure layer; 3, establishing the dielectric layers of the cross spiral FSS structure, and embedding the cross spiral FSS structure layer into a dielectric substrate by using the CST software; 4, capturing the cross spiral FSS structure unit from the CST software for incident wave transmittance analysis, regulating parameters of the structure unit, changing the resonance frequency of a stop band, and replacing an original structure by using the regulated structure unit; 5, setting the parameters such as boundaries and the like of the constructed cross spiral FSS structure, and testing the bandwidth stability and frequency selectivity of the structure; and 6, machining and manufacturing the cross spiral FSS structure by adopting a double-sided copper-clad plate according to an optimal size determined by the step 4.

Description

(1) Technical field [0001] The present invention relates to a cross-helix frequency selective surface structure (hereinafter referred to as cross-helix FSS structure) applied to radar systems and communication systems, and in particular to a cross-helix FSS structure with dual-band characteristics and a construction method thereof. The structure can reduce the radar scattering cross section of the antenna, and design a parabolic antenna with multiple feeds and multiple frequencies. It belongs to the technical field of microwave frequency band antenna engineering. (2) Background technology [0002] Modern warfare largely depends on electronic reconnaissance technology, so anti-reconnaissance technology is imminent. As an important means of anti-reconnaissance, the reduction of radar cross section (RCS) of weapon system has been paid attention to. The RCS of the antenna contributes a lot to the overall RCS of the aircraft or missile. How to design a radome that can effective...

Claims

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Application Information

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IPC IPC(8): H01Q15/00
Inventor 阎照文韩雅静王涛车明明姜英杰
Owner BEIHANG UNIV
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