A Dual-Band Dual-Polarization Frequency Selective Surface With Wide-Range Flexible Band Ratio and Wide Angular Stability

IF 4.5 1区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Transactions on Microwave Theory and Techniques Pub Date : 2024-08-23 DOI:10.1109/TMTT.2024.3442208

Tian Pei Ma;Hong Bin Wang;Yu Jian Cheng

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Abstract

A dual-band dual-polarization frequency selective surface (FSS) with wide-range flexible band ratio and wide angular stability is proposed. Subwavelength metal walls acted as plate capacitors are loaded onto two separate radiating square slot elements arranged in a triangular array to realize miniaturization and wide-range flexible band ratio from 1.33 to 7.11 in 1–7.7 GHz. The single-layer square slot resonator is modified into a two-layer self-decoupling structure with reverse currents in different layers to realize wide angular stability up to 70°. Based on the substrate integrated waveguide (SIW) theory, the metal walls can be represented by arrays of vias for fabrication. The independently controllable passband responses and equivalent circuit model (ECM) significantly simplify the FSS design. A prototype of the proposed FSS has been fabricated and measured. The measured results have favorable agreement with the simulated results, thus validating the FSS design. The proposed FSS can act as antenna radome and antenna decoupling structure, which can be widely used in multiband antennas, shared-aperture antennas, wide-angle scanning antenna arrays, and near-field loading, with high design flexibility.

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具有宽范围灵活带比和宽角度稳定性的双波段双极化选频表面

提出了一种具有宽范围柔性带比和宽角稳定性的双频双极化频率选择表面。将亚波长金属壁作为板电容器加载到两个独立的三角形排列的方形辐射槽单元上，实现了1-7.7 GHz的小型化和宽范围柔性带比（1.33 ~ 7.11）。将单层方槽谐振器改进为两层自解耦结构，不同层间具有反向电流，可实现高达70°的宽角稳定性。基于基板集成波导（SIW）理论，金属壁可以用通孔阵列来表示。独立可控的通带响应和等效电路模型（ECM）大大简化了FSS的设计。所提出的FSS的原型已经制作和测量。实测结果与仿真结果吻合较好，验证了FSS设计的正确性。该FSS可作为天线天线罩和天线去耦结构，可广泛应用于多频段天线、共享孔径天线、广角扫描天线阵列和近场加载等领域，具有较高的设计灵活性。

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来源期刊

IEEE Transactions on Microwave Theory and Techniques 工程技术-工程：电子与电气

CiteScore

8.60

自引率

18.60%

发文量

486

审稿时长

6 months

期刊介绍： The IEEE Transactions on Microwave Theory and Techniques focuses on that part of engineering and theory associated with microwave/millimeter-wave components, devices, circuits, and systems involving the generation, modulation, demodulation, control, transmission, and detection of microwave signals. This includes scientific, technical, and industrial, activities. Microwave theory and techniques relates to electromagnetic waves usually in the frequency region between a few MHz and a THz; other spectral regions and wave types are included within the scope of the Society whenever basic microwave theory and techniques can yield useful results. Generally, this occurs in the theory of wave propagation in structures with dimensions comparable to a wavelength, and in the related techniques for analysis and design.