Passband embedded-type frequency selection absorber based on parallel LC resonator loading

A technology of frequency selection and absorber, which is applied in the field of passband embedded frequency selective absorber, can solve the problems of complex structure of passband embedded frequency select absorber, achieve simple manufacturing process, compact structural unit, weaken The effect of sensitivity
CN108539431AActive Publication Date: 2018-09-14XIDIAN UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
XIDIAN UNIV
Publication Date
2018-09-14

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Abstract

The invention provides a passband embedded-type frequency selection absorber based on parallel LC resonator loading, mainly to solve the problem that the structure in the prior art is complicated. Thepassband embedded-type frequency selection absorber based on parallel LC resonator loading comprises m*n periodically-arranged absorber units, wherein the absorber unit comprises a passband embedded-type wave absorption structure and a bandpass frequency selection structure which are vertically cascaded and with an air layer arranged in the middle; the passband embedded-type wave absorption structure comprises a first dielectric plate, the lower surface is printed with four strip patches, the upper surface is printed with a Jerusalem cross patch loaded with parallel LC resonators and resistors, and the two are connected through metalized through holes; the bandpass frequency selection structure comprises a second dielectric plate and a third dielectric plate which are stacked vertically,the upper surface of the second dielectric plate is printed with a first square ring patch and a first tail-winding cross patch located inside, and the upper surface of the third dielectric plate is printed with a standard cross patch and the lower surface is printed with a second square ring patch and a second tail-winding cross patch located inside.
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Description

technical field

[0001] The invention belongs to the technical field of electromagnetic protection, and relates to a passband embedded frequency selective absorber, in particular to a passband embedded frequency selective absorber based on parallel LC resonator loading. Background technique

[0002] 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 specular reflections can be avoided. While ensuring the overall performance of the protected equipment, the dual-base station radar scattering cross-sectional area is reduced to achieve the purpose of stealth.

[0003] The earliest frequency selective absorber appeared in the form of a wave-absorbing shield, which is a composite multi-layer structure including a layer of bandpass FSS and a layer of resistive absorbing surface. In the existing frequency sele...

Claims

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