期刊
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
卷 17, 期 6, 页码 1002-1005出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LAWP.2018.2829022
关键词
Cross-frame element; equivalent circuit model (ECM); frequency-selective surface (FSS); low profile; rasorber
资金
- National Natural Science Foundation of China [61571231, 61601224]
- Natural Science Foundation of Jiangsu Province [BK20160844]
- Fundamental Research Funds for the Central Universities of China [30916011318]
The low-profile dual-polarization frequency-selective rasorbers with very simple structures are investigated. Based on an equivalent circuit model, the operating principle and design method are first studied. One rasorber using lossy cross-frame elements and double-square loops is then proposed, which exhibits two absorption bands at the two sides of one passband. Moreover, the rasorbers with reduced cell size are further developed to stabilize the angular response. Under normal incidence, an insertion loss of about 0.26 dB is obtained at 4.25 GHz, the fractional bandwidth for reflection less than -10 dB is over 100%, and the thickness is around 0.1 lambda(L). For demonstration, the rasorber prototypes are fabricated and measured, while reasonable agreements are observed accordingly.
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