3D Band-Absorptive Frequency Selective Rasorber: Concept and Analysis

被引：29

作者：

Yu, Yufeng ^{[1
]}

Luo, Guo Qing ^{[1
]}

Liu, Qi ^{[2
]}

Yu, Weiliang ^{[1
]}

Jin, Huayan ^{[1
]}

Liao, Zhen ^{[1
]}

Shen, Zhongxiang ^{[3
]}

机构：

[1] Hangzhou Dianzi Univ, Inst Antennas & Microwave Technol, Minist Educ, Key Lab RF Circuits & Syst, Hangzhou 310018, Zhejiang, Peoples R China

[2] Hangzhou Dianzi Univ, Smart City Res Ctr Zhejiang Prov, Hangzhou 310018, Zhejiang, Peoples R China

[3] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore

来源：

IEEE ACCESS | 2019年 / 7卷

基金：

中国国家自然科学基金;

关键词：

Frequency selective rasorber (FSR); absorptive frequency selective structure; band-absorptive; SQUARE-LOOP; DESIGN; FSS;

D O I：

10.1109/ACCESS.2018.2886967

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper presents a 3D band-absorptive frequency selective rasorber (FSR). Such an FSR is absorptive within a specific band and almost transparent below the absorption band. The definition and evaluation of the band-absorptive FSR is initially provided and followed by the design concept of 3D FSR. An example is then proposed, whose unit cell is composed of 3D absorber and 3D band-stop FSS. An equivalent circuit model is established for understanding its operating principle. A prototype of the proposed 3D band-absorptive FSR is fabricated. The measured results show that it has an absorption band (vertical bar S-11 vertical bar <= -10 dB and vertical bar S-21 vertical bar <= -10 dB) from 4.21 to 6.51 GHz, with a thickness of 0.17 wavelength at 4.21 GHz. Moreover, vertical bar S-21 vertical bar is higher than -1 dB at the frequencies below 1.28 GHz. The proposed band absorptive FSR can be used as radomes for low-frequency antennas in military communications or spectrum monitoring systems.

引用

页码：2520 / 2528

页数：9

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