期刊
JOURNAL OF PHYSICS D-APPLIED PHYSICS
卷 45, 期 21, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0022-3727/45/21/215104
关键词
-
资金
- Aeronautical Science Foundation of China [2011ZF88013]
A design for ultrathin absorbers with wideband absorption is presented. The absorber is composed of a high-impedance surface comprising a lossy patch array over an electrically thin grounded dielectric substrate. This class of absorbers is usually considered as a narrowband structure. Here, we show that the performance of this absorber can be considered as the low-frequency case of a lambda/4-thick absorber and wideband absorption can be actually achieved by the use of multi-resonance arrays. Arrays with different resonant geometries are proposed to design dual-band and triple-band ultrathin absorbers. By tuning these absorption bands closer to each other, we obtain a wideband absorber without increasing the thickness, and the experimental verification is also presented.
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