采用可重构结构型吸波材料的天线RCS减缩方法

doi:10.3969/j.issn.1001-2400.2017.02.008

Abstract

Abstract:

An active reconfigurable Radar absorbing structure using a pin diode for the radar cross section (RCS) reduction of the antenna reflector is proposed, which is able to be switched between metal reflector with OFF-state diodes and absorber with ON-state diodes. The reflection coefficient of the RAS reflector is able to be switched between less than -25.0dB with OFF-state diodes and more than -0.8dB with ON-state diodes around 8.3GHz. The RAS reflector with ON-state diodes is applied to a dipole antenna reflector and gives radiation performance equivalent to that of the dipole with a metal reflector. The RAS reflector with OFF-state diodes is used as a radar absorber for RCS reduction. Meanwhile, a chessboard-like geometry RAS reflector is proposed in response to the wideband RCS reduction. The RCS reduction band covers the working band and is extended to 5～18GHz. The results show that the reconfigurable RAS reflector can contribute to the antenna RCS reduction at the working frequency, with the radiation performance of the dipole antenna preserved.

Key words: radar cross section (RCS), reconfigurable, radar absorbing structure

WANG Fuwei;GUO Lixin;GONG Shuxi. Antenna radar cross section reduction by a reconfigurable radar absorbing structure[J].Journal of Xidian University, 2017, 44(2): 42-46+94.

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Antenna radar cross section reduction by a reconfigurable radar absorbing structure

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