A Mechanically Controlled Switchable Wideband Frequency–Selective Rasorber/Absorber

Electronics

卷:11

Dongyan Xia¹  Yuan Wang²  Xueyong Ding²  Liansheng Wang²  Quanhong Fu³ 

[1] Department of Finance and Economics, Sanya University, Sanya 572022, China;

[2] Department of Science and Technology, Sanya University, Sanya 572022, China;

[3] School of Physical Science and Technology, Northwestern Polytechnical University, Xi’an 710129, China;

关键词: mechanically controlled;    absorber;    rasorber;    switchable;    wideband;    frequency selective;   

DOI  :  10.3390/electronics11091386

来源: DOAJ

【 摘 要 】

A mechanically controlled switchable wideband frequency–selective rasorber/absorber, with the transmission window inside the absorption band, based on a frequency–selective surface and a rotatable metal plate, is presented in this paper. The absorption of the switchable rasorber/absorber is over 90%, from 3.9 GHz to 11.77 GHz, when the rotatable metal plate is parallel to the rest of the layers, and its transmission coefficient can reach up to 0.62 at 11.6 GHz, with the rotatable metal plate perpendicular to the rest of the layers. The mechanism of wideband absorption and transmission are explained by monitoring and analyzing the surface current distribution at the absorption and transmission frequencies. The control method is simple, reliable and accurate. It has application value in communication and radar stations.

【 授权许可】

Unknown