Assimilation of the Different Layers of Lossy-FSS, Switchable-FSS, and Air Spacers for Polarization-Insensitive Wideband Absorber With Band-Notch

IF 3.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Dielectrics and Electrical Insulation Pub Date : 2026-10-01 Epub Date: 2026-08-18 DOI:10.1109/TDEI.2026.3724553

Sachin Kalraiya;Shreya Pourush;Raghvendra Kumar Chaudhary

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引用次数: 0

Abstract

A polarization-independent wideband electromagnetic absorber along with switchable band-notch characteristics is demonstrated in this article. The geometrical design encompasses a triple-layered structure comprising a top surface for lossy behavior achieved via resistor-loaded frequency-selective surface (FSS), a switchable middle layer with p-i-n diodes, and a bottom metallic ground plane. In the on state of the diode, the absorber exhibits broadband absorption due to the top layer. When the diode is switched off, the middle layer introduces a band-notch response without affecting the rest of the absorption band. The proposed absorber exhibits a compact unit-cell size of

$0.14\lambda _{\text {L}}$

, achieves a relative absorption bandwidth (RAB) of 106%, and demonstrates a switchable notch band ranging from 5.02 to 6.05 GHz while maintaining polarization insensitivity and angular stability up to 45°. An equivalent circuitry study, current pattern analysis, and effect of dimensional variations are provided to validate the absorber’s operation. A specimen of the presented geometry is manufactured and experimental validation is carried out, showing agreeable matching with the simulation results.

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带陷波的极化不敏感宽带吸收器中损耗fss、可切换fss和空气间隔层的同化

本文演示了一种具有可切换带陷波特性的非极化宽带电磁吸收体。几何设计包含三层结构，包括通过电阻负载频率选择表面（FSS）实现损耗行为的顶表面，带有p-i-n二极管的可切换中间层和底部金属接地面。在二极管的导通状态下，由于顶层的作用，吸收器表现出宽带吸收。当二极管关闭时，中间层引入带缺口响应，而不影响吸收带的其余部分。该吸收器具有紧凑的单元尺寸$0.14\lambda _{\text {L}}$，实现了106%的相对吸收带宽（RAB），并具有5.02至6.05 GHz的可切换陷波带，同时保持极化不灵敏度和角稳定性高达45°。等效电路研究，电流模式分析和尺寸变化的影响，以验证吸收器的运行。制作了该几何形状的试样并进行了实验验证，结果与仿真结果吻合较好。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Transactions on Dielectrics and Electrical Insulation 工程技术-工程：电子与电气

CiteScore

6.00

自引率

22.60%

发文量

309

审稿时长

5.2 months

期刊介绍： Topics that are concerned with dielectric phenomena and measurements, with development and characterization of gaseous, vacuum, liquid and solid electrical insulating materials and systems; and with utilization of these materials in circuits and systems under condition of use.