A Wideband Frequency-Selective Rasorber With Rectangular Spiral Resonators

被引：18

作者：

Xing, Qijun ^{[1
]}

Wu, Weiwei ^{[1
]}

Yan, Yuchen ^{[1
]}

Zhang, Ximeng ^{[1
]}

Yuan, Naichang ^{[1
]}

机构：

[1] Natl Univ Def Technol, State Key Lab Complex Electromagnet Environm Effe, Changsha 410073, Peoples R China

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2022年 / 21卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Absorption; Spirals; Resonators; Passband; Metals; Insertion loss; Simulation; dual-polarization; frequency selective rasorber (FSR); insertion loss (IL); DESIGN; ABSORBER;

D O I：

10.1109/LAWP.2022.3177740

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This letter presents a frequency selective absorber (FSR) with a passband and two wide absorption bands. The structure is composed of a resistive layer and a bandpass frequency selective surface (FSS) layer. The resistive layer is a combination of metal lines with loaded resistors and rectangular spiral resonators, which generate parallel resonances. Square slots are designed in the bandpass FSS to produce parallel resonance inside the passband and perform as a metal plane outside the passband. A nearly transparent window can be obtained by adjusting the parallel resonant frequencies of two layers to be consistent. The simulation results show that the 3 dB transmission band ranges from 6.5 to 7.76 GHz, and the minimum insertion loss is 0.05 dB at 7.09 GHz. The dual-polarized FSR presents stable operating characteristics and realizes two absorption bands on both sides of the passband, and the fractional bandwidth of the reflection coefficient lower than -10 dB is up to 127%, which ranges from 2.69 to 12.04 GHz. In addition, the FSR is manufactured and measured, and the measurement results are consistent with the simulation results.

引用

页码：1688 / 1692

页数：5

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