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

J4 ›› 2012, Vol. 39 ›› Issue (3): 120-125.doi: 10.3969/j.issn.1001-2400.2012.03.019

利用高阻抗表面缩减天线雷达截面的新方法

龚琦;张帅;龚书喜;焦永昌;路宝

(西安电子科技大学天线与微波技术重点实验室，陕西西安 710071)

收稿日期:2011-02-24 出版日期:2012-06-20 发布日期:2012-07-03
通讯作者: 龚琦
作者简介:龚琦(1985-)，男，西安电子科技大学博士研究生，E-mail: gq.one@163.com．
基金资助:
国家自然科学基金资助项目(60801042)

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

GONG Qi;ZHANG Shuai;GONG Shuxi;JIAO Yongchang;LU Bao

(Science and Technology on Antenna and Microwave Lab., Xidian Univ., Xi'an 710071， China)

Received:2011-02-24 Online:2012-06-20 Published:2012-07-03
Contact: GONG Qi

摘要/Abstract

摘要：

针对现有雷达截面(RCS)减缩技术会导致天线辐射性能退化，体积、重量和成本增加，减缩性能受安装精度影响而不稳定的缺点，提出了一种缩减天线RCS的新方法．将高阻抗表面(HIS)与天线制作于介质板的同一表面，使HIS的同相反射相位带隙的频率与天线工作频率重合，通过高阻抗表面与天线的散射场的对消来减小天线的雷达散射截面，从而实现对垂直照射的天线工作频带内的同极化威胁雷达波的隐身．实验结果表明: 在天线工作频带内，其RCS得到了5.3dB以上的减缩，同时，带外RCS亦得到了有效的抑制，S₁₁的-10dB并未展宽，天线间的互耦得到了有效抑制．

关键词: 高阻抗表面, 微带天线, 散射, 雷达截面减缩

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

中图分类号:

O441

龚琦;张帅;龚书喜;焦永昌;路宝. 利用高阻抗表面缩减天线雷达截面的新方法[J]. J4, 2012, 39(3): 120-125.

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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利用高阻抗表面缩减天线雷达截面的新方法

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

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