Layered Admittance Reconstruction to Synthesize Broadband FSS Absorbers With Ultralow Reflection

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

IEEE Antennas and Wireless Propagation Letters Pub Date : 2026-09-01 Epub Date: 2026-06-12 DOI:10.1109/LAWP.2026.3703046

Nan Wang;Guobin Wan;Qimin Ding;Xin Ma

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引用次数: 0

Abstract

Synthesizing multilayer resistive frequency-selective-surface (FSS) absorbers under stringent wideband low-reflection requirements remains challenging, as the required contribution of each layer is not straightforward to prescribe. This letter presents a layered admittance reconstruction method, in which a reference Jaumann absorber serves as a target generator, and its input-admittance trajectories at different layer positions are reconstructed in a compact multilayer FSS absorber with thinner spacers. For each reconstruction stage, the ideal complex admittance required by the current FSS layer is determined from the corresponding reference trajectory and the already reconstructed lower substructure. With the lower substructure fixed, the current layer is synthesized against this prescribed admittance target, thereby providing an explicit stagewise organization for multilayer synthesis. A resistive FSS unit cell with enhanced admittance tailoring is developed to realize the prescribed layerwise admittance targets. A four-layer absorber achieves reflection below

$-\text{20}$

dB from 3.47 GHz to 20.38 GHz (141.8%) and below

$-\text{30}$

dB from 4.14 GHz to 12.92 GHz (103.0%) in simulation. Measurements validate a normal-incidence band near

$-\text{20}$

dB from 3.15 to 17 GHz; transverse electric (TE)-polarized measurements further support the angular response under selected conditions.

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层状导纳重构合成宽带FSS超低反射吸收体

在严格的宽带低反射要求下合成多层电阻性频率选择表面（FSS）吸收器仍然具有挑战性，因为每层所需的贡献并不容易规定。本文提出了一种分层导纳重建方法，该方法将参考Jaumann吸收器作为目标发生器，并在具有较薄间隔的紧凑多层FSS吸收器中重建其不同层位置的输入导纳轨迹。对于每个重建阶段，当前FSS层所需的理想复导纳由相应的参考轨迹和已经重建的下层子结构确定。在下层子结构固定的情况下，当前层根据规定的导纳目标进行合成，从而为多层合成提供明确的分阶段组织。为了实现规定的分层导纳目标，开发了一种导纳增强剪裁的电阻式FSS单元格。在模拟中，四层吸收器在3.47 GHz至20.38 GHz（141.8%）范围内的反射低于$- text{20}$ dB，在4.14 GHz至12.92 GHz（103.0%）范围内的反射低于$- text{20}$ dB。测量验证了3.15至17 GHz的$- text{20}$ dB附近的正常入射频带；横向电（TE）偏振测量进一步支持在所选条件下的角响应。

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.