一种采用可重构极化旋转表面的天线RCS减缩方法

doi:10.3969/j.issn.1001-2400.2018.03.013

Abstract

Abstract:

A novel method for reducing the radar cross section (RCS) of a Yagi-uda antenna by reconfigurable polarization rotation surfaces (PRS) using chessboard-like geometry is proposed. The reconfigurable PRS reflector is able to be switched between low-RCS PRS reflector with OFF-state diodes and metal reflector with ON-state diodes. The reconfigurable PRS reflector with ON-state diodes is applied to a Yagi-uda antenna reflector and gives equivalent radiation performance to Yagi-uda with a metal reflector. The PRS reflector with OFF-state diodes is used as a low RCS reflector by chessboard configuration. Meanwhile, the state of RCS reduction can be switched according to the work state of radar between operating and non-operating. It is shown that the reconfigurable PRS reflector can contribute to the switchable RCS reduction between operating and non-operating of Yagi-uda. The radiation performance of the Yagi-uda antenna is preserved when reconfigurable PRS is used. The largest RCS reduction is more than 25dB, and the RCS reduction region is -20°≤θ≤+20°.

Key words: radar cross section, reconfigurable, polarization rotation surfaces, Yagi-uda antenna

WANG Fuwei;LI Ke;REN Yuhui. Method of antenna radar cross section reduction by the reconfigurable polarization rotation surface[J].Journal of Xidian University, 2018, 45(3): 68-73.

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Method of antenna radar cross section reduction by the reconfigurable polarization rotation surface

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