A Highly Selective Rasorber Based on Second-Order Resonance

被引:34
作者
Xiu, Xin [1 ,2 ]
Che, Wenquan [2 ]
Yang, Wanchen [2 ]
Han, Ye [3 ]
Xue, Quan [2 ]
机构
[1] Nanjing Univ Sci & Technol, Dept Commun Engn, Nanjing 210094, Peoples R China
[2] South China Univ Technol, Sch Elect & Informat Engn, Guangdong Prov Key Lab Millimeter Wave & Terahert, Guangzhou 510641, Peoples R China
[3] Nanjing Univ Posts & Telecommun, Coll Elect & Opt Engn, Nanjing 210023, Peoples R China
来源
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2020年 / 19卷 / 02期
基金
中国国家自然科学基金;
关键词
Aperture-coupled resonator (ACR); high selectivity; rasorber; second-order band-pass response; SQUARE-LOOP; LOW-PROFILE; DESIGN;
D O I
10.1109/LAWP.2019.2954535
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 novel frequency-selective rasorber with one highly selective passband between two absorption bands is presented. Based on the equivalent circuit analysis, the approach of using a second-order band-pass response in the lossless layer is adopted to improve the selectivity of the passband. A two-layered structure consisting of one lossy and one lossless layer is then used for implementation. The lossy layer is constructed using stub resonators, while an aperture-coupled resonator is used to realize lossless layer and achieve the highly selective passband. Under normal incidence, the operating bandwidth of the proposed rasorber is 110.6%. One passband with sharp roll-off edge and small insertion loss (0.08 dB) is achieved at 4.3 GHz. For demonstration, one prototype was fabricated and measured, and a good agreement is observed accordingly.
引用
收藏
页码:223 / 227
页数:5
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