Abstract
A wideband switchable frequency selective surfaces (FSS) absorber/reflector for 4-8 GHz application of smart stealth system is presented. This switchable FSS has novel properties that combine wideband absorption and switchable performance over the entire operational band. Double split-rings are used to accomplish wideband and switchable performance. Bias line is designed by using series multi-inductors to achieve wideband isolation. By biasing PIN diodes at different DC voltage, we are able to control the performance of switchable FSS. In OFF state, the switchable FSS works as a wideband absorber, while in ON state it has fine reflective property. The switchable FSS is computed by full-wave numerical simulation. The samples are fabricated and tested to verify the proposed concept.
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