利用高阻抗表面缩减天线雷达截面的新方法

doi:10.3969/j.issn.1001-2400.2012.03.019

Abstract

Abstract:

This paper investigates the application of the high impedance surface (HIS) to reduce the radar cross section (RCS) of the antenna. The HIS elements are fabricated on the same surface together with the antenna. Around the operational frequency of the HIS elements, the reflection of the HIS and PEC have the opposite phases, so for any normal incident plane wave the reflections cancel out, thereby reducing the RCS. Thus the HIS can be used to reduce the RCS of the antenna which has a PEC surface radiator. To assess the validity of the proposed method, the HIS is employed to reduce the RCS of two microstrip patch antennas. Simulated and measured results show that the RCS in-band of the two microstrip patch antennas with HIS is reduced by at least 5.3dB compared with the common antennas, with the impedance bandwidth (S₁₁<-10dB) not changed.

Key words: high impedance surface, microstrip antenna, scattering, radar cross section reduction

CLC Number:

O441

GONG Qi;ZHANG Shuai;GONG Shuxi;JIAO Yongchang;LU Bao. Application of the high impedance surface for RCS reduction of the antenna[J].J4, 2012, 39(3): 120-125.

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Application of the high impedance surface for RCS reduction of the antenna

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