Wideband second-order bandpass frequency selective surface with high selectivity

被引：4

作者：

Zhao, Minxin ^{[1
]}

Li, Huangyan ^{[2
]}

Wu, Zhen ^{[1
]}

Wang, Bin ^{[1
]}

Min, Xiaofan ^{[1
]}

Cao, Qunsheng ^{[1
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Dept Elect & Informat Engn, Nanjing, Peoples R China

[2] Nanjing Univ Sci & Technol, Sch Elect & Opt Engn, Nanjing, Peoples R China

来源：

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS | 2023年 / 65卷 / 08期

关键词：

FSS; high selectivity; narrow transitional band; second-order bandpass properties; wideband; DESIGN; REJECTION;

D O I：

10.1002/mop.33712

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A wideband second- order bandpass frequency selective surface (FSS), which is composed of three metallic arrays and two dielectric substrate layers, is proposed in this paper. The proposed design has high selectivity and wide passband properties simultaneously and is insensitive to incident angles and different polarizations. The equivalent circuit method and field distribution are analyzed to explain the mechanism of the proposed design. A prototype is fabricated and measured, demonstrating a well wideband second-order passband ranging from 4.8 to 8.8 GHz with 58.8% bandwidth (-3 dB), and the insertion loss (IL) in-band is less than 0.4 dB. Meanwhile, the transitional bands at both sides of the passband are 0.64 GHz (9.4%) and 0.6 GHz (8.8%), respectively. Moreover, the frequency responses of the proposed structure are stable up to 60 degrees for both TE and TM polarizations.

引用

页码：2230 / 2237

页数：8

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