Miniaturized Design of Dual Transmission Frequency Selective Rasorber With Wide Angular Stability

IF 3.5 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Open Journal of Antennas and Propagation Pub Date : 2024-03-28 DOI:10.1109/OJAP.2024.3382834
Mehran Manzoor Zargar;Archana Rajput;Kushmanda Saurav
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Abstract

In this paper, a miniaturized design of dual transmission frequency selective rasorber (FSR) with absorption-transmission-absorption-transmission (A-T-A-T) feature is proposed. Initially, lowfrequency resonators are incorporated on the square ring shaped lossy resistive layer for expanding the broad absorption towards the lower spectrum of frequency. Then the dual bandpass frequency selective surface (FSS) with transmission bands lying within the absorption spectrum is integrated with the resistive layer. Further, a cross-loop resonator is integrated inside the square ring of the resistive layer due to which a dual transmission pole is achieved through the resistive layer aligning with the dual operating frequencies of bandpass FSS. The proposed structure exhibits two broad absorption bands ranging from 3.7.10.5 GHz (95.7%) and 12.6.14.6 GHz (14.70%). The two transmission bands are at 10.7 GHz (8.62%) and 16.0 GHz (8.75%) with minimum insertion loss of 1.0 dB and 0.7 dB, respectively. The proposed FSR is polarization-insensitive and a compact design with an electrical size of $0.015\lambda^{2}$ and a thickness of $0.08\lambda$ along with a wide angular stability up to 50o incidence. The working process of the proposed design is illustrated by studying an equivalent circuit model (ECM). Further, a prototype of 23 × 23 array is fabricated and the measurements are carried out for both normal and oblique incidences. The close resemblance observed between the measured and simulated response experimentally validates the proposed FSR design.
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具有宽角度稳定性的双传输频率选择性激振器小型化设计
本文提出了一种具有吸收-传输-吸收-传输(A-T-A-T)特性的小型化双传输频率选择吸收器(FSR)设计。首先,在方形环状有损电阻层上加入低频谐振器,以扩大对低频频谱的广泛吸收。然后,将传输带位于吸收频谱内的双带通频率选择表面(FSS)与电阻层集成在一起。此外,在电阻层的方形环内还集成了一个交叉环路谐振器,从而通过电阻层实现了与带通 FSS 双工作频率一致的双传输极。拟议的结构显示出两个宽吸收带,分别为 3.7.10.5 GHz(95.7%)和 12.6.14.6 GHz(14.70%)。两个传输带分别为 10.7 GHz (8.62%) 和 16.0 GHz (8.75%),最小插入损耗分别为 1.0 dB 和 0.7 dB。所提出的 FSR 对偏振不敏感,设计紧凑,电气尺寸为 0.015 美元/λ^{2}$,厚度为 0.08 美元/λ^{2}$,具有高达 50o 入射角的广角稳定性。通过研究等效电路模型(ECM),说明了拟议设计的工作过程。此外,还制作了一个 23 × 23 阵列原型,并对正入射和斜入射进行了测量。从实验中观察到的测量和模拟响应之间的密切相似性验证了拟议的 FSR 设计。
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
CiteScore
6.50
自引率
12.50%
发文量
90
审稿时长
8 weeks
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Front Cover Table of Contents IEEE Open Journal of Antennas and Propagation Instructions for authors Guest Editorial: Antenna-Enabled Sensors and Systems, the New Frontier in Sustainable Wireless Systems IEEE ANTENNAS AND PROPAGATION SOCIETY
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