Dual-Band Active Frequency Selective Surface With Independent Frequency and Amplitude Tunability

IF 4.6 2区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Antennas and Wireless Propagation Letters Pub Date : 2026-10-01 Epub Date: 2026-08-10 DOI:10.1109/LAWP.2026.3721632

Xuanye Wu;Juan Chen;Jianfeng Yang

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引用次数: 0

Abstract

This letter presents an active, dual-band frequency selective surface (ADDFSS) with miniaturized unit cells and independent frequency and amplitude tunabilities. The structure consists of a top graphene sandwich structure (GSS), an intermediate polymethyl methacrylate spacer, and a bottom reconfigurable FSS. Biasing varactors in different resonant units enables independent tuning of the two passbands. The low and high bands cover 1.61 GHz to 3.82 GHz and 2.54 GHz to 6.54 GHz, with relative bandwidths of 81.4% and 88.1%, respectively. Increasing the GSS bias from 0 V to 4 V lowers the graphene sheet resistance from about 230

$\Omega$

/sq to 60

$\Omega$

/sq, and enables over 54% amplitude tunability. An equivalent-circuit model agrees with the full-wave simulations and validates the independent frequency and amplitude tuning. The compact, coplanar, and conformal architecture suits adaptive radomes and electromagnetic skins requiring frequency-agile transmission and controllable in-band scattering.

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具有独立频率和幅度可调性的双频主动频率选择表面

这封信提出了一个有源，双带频率选择表面（ADDFSS），具有小型化的单元电池和独立的频率和振幅可调性。该结构由顶部石墨烯夹层结构（GSS）、中间聚甲基丙烯酸甲酯间隔层和底部可重构FSS组成。偏置变容器在不同的谐振单元使两个通带的独立调谐。低频段和高频段覆盖1.61 GHz ~ 3.82 GHz和2.54 GHz ~ 6.54 GHz，相对带宽分别为81.4%和88.1%。将GSS偏置从0 V增加到4 V，可将石墨烯片电阻从约230 $\Omega$/sq降低到60 $\Omega$/sq，并实现超过54%的幅度可调性。等效电路模型与全波仿真结果一致，验证了频率和幅度的独立调谐。紧凑、共面和共形结构适合需要频率敏捷传输和可控带内散射的自适应天线罩和电磁蒙皮。

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 Antennas and Wireless Propagation Letters 工程技术-电信学

CiteScore

8.00

自引率

9.50%

发文量

529

审稿时长

1.0 months

期刊介绍： IEEE Antennas and Wireless Propagation Letters (AWP Letters) is devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation. These are areas of competence for the IEEE Antennas and Propagation Society (AP-S). AWPL aims to be one of the "fastest" journals among IEEE publications. This means that for papers that are eventually accepted, it is intended that an author may expect his or her paper to appear in IEEE Xplore, on average, around two months after submission.