Design of a fourth-order bandpass frequency selective surface via aperture-coupled approach

IF 3.2 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Aeu-International Journal of Electronics and Communications Pub Date : 2025-08-20 DOI:10.1016/j.aeue.2025.155989

Neelavathy M., Yogesh Kumar Choukiker

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引用次数: 0

Abstract

This article presents the design and experimental validation of a single-passband, fourth-order frequency selective surface (FSS). A circular patch resonator loaded with diagonal triangle slot is first designed to characterize the dual-mode operation. To suppress cross-polarized reflections generated by these modes, four such resonators are arranged with a

9 0^{o}

separation between adjacent patches. Following this, a single-band bandpass FSS based on a multilayer aperture-coupled (AC) structure is developed. The designed FSS provides greater flexibility in achieving single-band higher-order filtering responses compared to traditional AC patch resonators. It is validated through electric and magnetic coupling in the slot-loaded AC circular patch resonator, confirming the effectiveness of the design approach. Additionally, an equivalent circuit is developed using lumped elements, and both even- and odd-mode analyses are performed. The fabricated FSS prototypes are experimentally validated, demonstrating angular stability across varying incidence angles from

0^{o}

5 0^{o}

, while maintaining consistent resonant behavior for broadband responses.

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利用孔径耦合方法设计四阶带通频率选择表面

本文介绍了一种单通带四阶频率选择表面（FSS）的设计和实验验证。首先设计了一个带对角三角形槽的圆形贴片谐振器，以表征双模工作。为了抑制这些模式产生的交叉极化反射，四个这样的谐振器在相邻的贴片之间以90度的间隔排列。在此基础上，开发了基于多层孔耦合（AC）结构的单波段带通FSS。与传统的交流贴片谐振器相比，设计的FSS在实现单频段高阶滤波响应方面提供了更大的灵活性。通过槽载交流圆形贴片谐振器的电磁耦合验证，验证了设计方法的有效性。此外，利用集总元件开发了等效电路，并进行了偶模和奇模分析。制造的FSS原型经过实验验证，证明了在不同入射角（从00到500）范围内的角稳定性，同时保持了宽带响应的一致谐振行为。

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

Aeu-International Journal of Electronics and Communications 工程技术-电信学

CiteScore

6.90

自引率

18.80%

发文量

292

审稿时长

4.9 months

期刊介绍： AEÜ is an international scientific journal which publishes both original works and invited tutorials. The journal''s scope covers all aspects of theory and design of circuits, systems and devices for electronics, signal processing, and communication, including: signal and system theory, digital signal processing network theory and circuit design information theory, communication theory and techniques, modulation, source and channel coding switching theory and techniques, communication protocols optical communications microwave theory and techniques, radar, sonar antennas, wave propagation AEÜ publishes full papers and letters with very short turn around time but a high standard review process. Review cycles are typically finished within twelve weeks by application of modern electronic communication facilities.