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Reconfigurable Yagi-Uda Substrate for RCS Reduction of Patch Antenna

By Shu-Chen Zhao, Bing-Zhong Wang, and Wei Shao
Progress In Electromagnetics Research B, Vol. 11, 173-187, 2009


In this paper, a new Yagi-Uda substrate is proposed to obtain radar cross section (RCS) reduction. The Yagi-Uda substrate on which three kinds of metal microstrip lines are etched is put directly on the top of a patch antenna and can reduce RCS sharply by steering the direction of reflecting wave at resonant frequencies. Using a reconfiguration technique, the antenna can radiate without the substrate's effects. When the antenna does not need to work, the Yagi-Uda substrate works to reduce the RCS of the antenna. Besides, the resonant frequencies can be shifted by reconfiguring the Yagi-Uda substrate, so the RCS can be reduced in a broad frequency band.


Shu-Chen Zhao, Bing-Zhong Wang, and Wei Shao, "Reconfigurable Yagi-Uda Substrate for RCS Reduction of Patch Antenna," Progress In Electromagnetics Research B, Vol. 11, 173-187, 2009.


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