期刊
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
卷 16, 期 -, 页码 3147-3150出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LAWP.2017.2766100
关键词
Terms Active frequency selective surface; circuit analog (CA) absorber; p-i-n diodes; switchable absorber
In this letter, a polarization-insensitive broadband switchable absorber has been presented, which exhibits wide absorption bandwidth switching between two frequency bands (S-band in one biasing state, and C-and X-bands in other state). The structure utilizes the circuit analog absorber concept to achieve broadband absorption, whereas switchable mechanism is obtained by implementing active p-i-ndiodes in multilayer geometry. The novelty of the proposed design lies in its four-fold symmetrical configuration and simplified biasing network as compared to the earlier reported switchable absorbers. Several parametric variations have also been investigated to explain the switching and the broadband absorption mechanisms of the structure. Furthermore, a prototype has been fabricated and experimentally demonstrated under normal incidence.
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