Interdigitated resonator based frequency selective rasorber with high selectivity

IF 3.1 3区 物理与天体物理 Q2 PHYSICS, APPLIED Journal of Physics D: Applied Physics Pub Date : 2024-09-11 DOI:10.1088/1361-6463/ad76b8
Xiaojun Huang, Ke Li, Wei Hou, Yanpei Wang and Yutao Ma
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Abstract

This paper investigates a highly selective frequency selective rasorber (FSR) utilizing interdigitated resonators, characterized by a passband exhibiting low insertion loss (IL) and the introduction of a second-order passband response in the lossless layer enhances selectivity on both sides of the passband. The lossy unit is implemented by inserting interdigitated resonators on an octagonal ring loaded with lumped resistors, while the lossless layer is constructed with a five-layer structure. Simulation results demonstrate a low IL value of 0.78 dB at 3.5 GHz. At vertical incidence, the S21>−3 dB bandwidth ranges from 3.41 to 3.67 GHz, and the S11<−10 dB range spans from 2.2 to 8.2 GHz, obtaining two absorption bands on either side of the passband, with absorption rates exceeding 80%. The operating frequency bands are 1.95–3.27 GHz and 3.8–8.4 GHz. The designed FSR exhibits polarization insensitive. To validate simulation results, a prototype FSR was fabricated and tested, with experimental data aligning with simulation results.
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基于交织谐振器的高选择性频率选择器
本文研究了一种利用插接谐振器的高选择性频率选择器(FSR),其特点是通带具有低插入损耗(IL),在无损耗层中引入二阶通带响应可增强通带两侧的选择性。有损单元是通过在装有块状电阻器的八角环上插入相互咬合的谐振器来实现的,而无损耗层则采用五层结构。仿真结果表明,在 3.5 GHz 频率下,IL 值低至 0.78 dB。垂直入射时,S21>-3 dB 带宽范围为 3.41 至 3.67 GHz,S11<-10 dB 范围为 2.2 至 8.2 GHz,在通带两侧获得两个吸收带,吸收率超过 80%。工作频带为 1.95-3.27 GHz 和 3.8-8.4 GHz。所设计的 FSR 对极化不敏感。为了验证仿真结果,制作并测试了一个 FSR 原型,实验数据与仿真结果一致。
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
Journal of Physics D: Applied Physics
Journal of Physics D: Applied Physics 物理-物理:应用
CiteScore
6.80
自引率
8.80%
发文量
835
审稿时长
2.1 months
期刊介绍: This journal is concerned with all aspects of applied physics research, from biophysics, magnetism, plasmas and semiconductors to the structure and properties of matter.
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