3-D Frequency-Selective Rasorber With Wide Upper Absorption Band

被引:116
作者
Yu, Yufeng [1 ,2 ]
Shen, Zhongxiang [3 ]
Deng, Tianwei [1 ]
Luo, Guoqing [2 ]
机构
[1] Natl Univ Singapore, Temasek Labs, Singapore 117411, Singapore
[2] Hangzhou Dianzi Univ, Sch Elect & Informat, Inst Antennas & Microwave Technol, Hangzhou 310018, Zhejiang, Peoples R China
[3] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore
基金
中国国家自然科学基金;
关键词
Frequency-selective structure; rasorber; stepped impedance resonator (SIR); SQUARE-LOOP; SURFACE; ABSORBER; DESIGN; FSS;
D O I
10.1109/TAP.2017.2712812
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
This communication presents a 3-D frequency-selective rasorber (FSR) that has a passband with a low insertion loss and two absorption bands at both sides of the passband. A lossless and two lossy resonators are employed in the unit cell of the periodic structure to produce the passband and the absorption bands, respectively. Utilizing the techniques of stepped impedance resonator and capacitor loading, the thickness of the resonators is reduced. Moreover, the capacitor loading also frees the tuning of each resonant frequency of the lossy resonator, which facilitates the FSR design. The multiresonances of the lossy resonators are also employed to obtain a wide upper absorption band. An equivalent circuit model is established for understanding the operating principle. A prototype of the proposed FSR is fabricated and measured. Good agreement between measured and simulated results validates our FSR design.
引用
收藏
页码:4363 / 4367
页数:5
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