Abstract
A reconfigurable polarization rotation surface (PRS) using chessboard-like geometry is introduced for the radar cross section (RCS) reduction of a Yagi-Uda antenna in this article. The reconfigurable PRS reflector can be switched between low-RCS PRS reflector and metal reflector. When the reconfigurable PRS reflector with ON-state diodes is used in the Yagi-Uda antenna, the antenna has a similar radiation characteristic compared with Yagi-Uda using metal reflector. The PRS reflector can be used to achieve a low-RCS characteristic reflector by chessboard configuration with OFF-state diodes. Finally, the status of RCS can be switched according to the working state of diodes. The results show that the radiation performance of the Yagi-Uda is preserved. The monostatic RCS of the Yagi-Uda using PRS reflector with OFF-state diodes can be reduced more than 25 dB.
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