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A microstrip antenna with reduced in-band and out-of-band radar cross-section

Published online by Cambridge University Press:  13 November 2018

Jiakai Zhang
Affiliation:
School of Electronics and Information, Northwestern Polytechnic University, Xi'an 710129, China
Jiachen Xu
Affiliation:
School of Electronics and Information, Northwestern Polytechnic University, Xi'an 710129, China
Yan Qu
Affiliation:
Academy of Space Information Systems, Xi'an 710129, China
Jun Ding
Affiliation:
School of Electronics and Information, Northwestern Polytechnic University, Xi'an 710129, China
Chenjiang Guo
Affiliation:
School of Electronics and Information, Northwestern Polytechnic University, Xi'an 710129, China
Corresponding
E-mail address:

Abstract

This paper proposes a microstrip antenna with reduced in-band and out-of-band radar cross-section (RCS) by subtracting the area of weak scattered current on the ground plane. Fourteen square slots were subtracted from the ground plane, reducing in-band and out-of-band RCS while maintaining radiation performance. Modified and reference antenna surface current distributions were simulated and analyzed in radiating and scattering modes. Two antenna prototypes were fabricated and measured to verify the simulation. The proposed antenna RCS was reduced compared with the reference antenna in the frequency range 1–4.4 GHz, including in-band and out-of-band frequency bands. Maximum in-band and out-of-band RCS reduction was 16.3 dBsm at the working frequency, and 19.3 dBsm at 3.4 GHz, respectively

Type
Research Papers
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2018 

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