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Wideband radar cross section reduction of a microstrip antenna with square slots

Published online by Cambridge University Press:  20 February 2019

Zhang Jiakai*
Affiliation:
School of Electronics and Information, Northwestern Polytechnic University, Xi'an 710129, China
Zheng Qi
Affiliation:
School of Electronics and Information, Northwestern Polytechnic University, Xi'an 710129, China
Li Haixiong
Affiliation:
School of Electronics and Information, Northwestern Polytechnic University, Xi'an 710129, China
Ding Jun
Affiliation:
School of Electronics and Information, Northwestern Polytechnic University, Xi'an 710129, China
Guo Chenjiang
Affiliation:
School of Electronics and Information, Northwestern Polytechnic University, Xi'an 710129, China
*
Author for correspondence: Zhang JiaKai, E-mail: zjkyikun@mail.nwpu.edu.cn

Abstract

This paper proposes a new radar cross section (RCS) reduced microstrip antenna incorporating 475 square slots on the patch. The proposed antenna achieves wideband RCS reduction with radiation performance sustained. The modified and reference antenna are simulated and analyzed in radiating and scattering mode, respectively. Prototypes of two antennas are fabricated and measured. Compared with the reference antenna, the simulated result shows the modified antenna RCS reduced in the frequency range 1.1–2.6 GHz, which contains the in-band and out-of-band frequency band simultaneously. And the maximum RCS reduction is 7.6dB at the frequency of 1.19GHz. Besides, the modified antenna can achieve the antenna RCS reduction in the case of oblique incidence. The prototypes of two antennas are fabricated and measured, and the accuracy of the simulation is proved by the measured result. Due to its advantages of simplicity, wideband RCS reduced, broad-angle RCS reduced, the method in this paper is suitable for wideband antenna RCS reduction in space-limited environment.

Type
Research Papers
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2019 

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References

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