Design of Switchable Frequency-Selective Rasorber With A-R-A-T or A-T-A-R Operating Modes

This letter presents a switchable frequency-selective rasorber (SFSR) with two operating modes. Switching from transmission to reflection can be achieved by appropriately adding feeders and PIN diodes based on cascaded two-dimensional lossy lossless surface screens. The proposed SFSR realize out-of-band absorption. Analysis of the equivalent circuit model useful for achieving rasorber. As state changes, working switched low-frequency high-frequency reflection, respectively. In final-revision simulation band SFSR, in on state, peaks −0.55 dB at 4.06 GHz −0.52 5.97 GHz, respectively, are achieved; xmlns:xlink="http://www.w3.org/1999/xlink">off −0.31 4.04 −0.26 6.01 obtained. A prototype sample is developed validated. results good agreement those simulations. design used intelligent antijamming communication.