Reconfigurable Active FSS With Switchable Passband/Stopband Response

This paper proposes a novel design methodology for active frequency selective surfaces (AFSS) with switchable electromagnetic passband/stopband characteristics. The approach begins with filter circuit topology, providing a generalizable approach for designing single/dual-band AFSS with low insertion loss (IL) and high shielding efficiency (SE). First, we construct a filter circuit model by integrating hybrid resonant elements and impedance control components, establishing parametric mapping rela