Single-layer angularly-stable bandpass frequency-selective surface with interdigital resonator

• 作者: MA Xin LIU Yunzhe WAN Guobin PAN Aigang
• 来源期刊: 系统工程与电子技术（英文版）
• 年，卷（期）: 2021,（3）
• 所属期刊栏目: DEFENCE ELECTRONICS TECHNOLOGY
• 页码范围: 559-565
• 页数: 7页
• 语种: 英文
• DOI: 10.23919/JSEE.2021.000047

摘要

A miniaturized periodic element for constructing bandpass frequency selective surface(FSS)independent of in-cident angles and polarizations is presented.An interdigital re-sonator(IR)with one extending finger to connect the two sepa-rate parts of the interdigital capacitor is explored to achieve pa-rallel resonance.The equivalent circuit model(ECM)and electric field distributions are introduced to explain frequency perform-ance of FSS.The whole structure has only one layer and pos-sesses a low profile(a thickness of 0.001 5 λ,where λ repre-sents the resonant wavelength in free space)as well as a small size(0.03λ×0.03λ).This FSS performs as a spatial bandpass fil-ter which exhibits a great angular stability with incident angles ranging from 0° to 80° for both transverse electric(TE)and trans-verse magnetic(TM)polarizations.As an example,a prototype of one proposed FSS is fabricated and tested.The measured re-sults show a good angular stability.