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International Journal of Antennas and Propagation
Volume 2017, Article ID 1268947, 7 pages
Research Article

Broadband RCS Reduction of Antenna with AMC Using Gradually Concentric Ring Arrangement

School of Information Technology, Northwest University, Xi’an, Shaanxi 710127, China

Correspondence should be addressed to Fuwei Wang; moc.361@luarwfw

Received 5 August 2017; Revised 9 October 2017; Accepted 29 October 2017; Published 4 December 2017

Academic Editor: María Elena de Cos Gómez

Copyright © 2017 Fuwei Wang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


This paper proposes a new method to the broadband RCS reduction with the artificial magnetic conductor (AMC) surfaces. The AMC surfaces can introduce a zero-degree reflection phase shift to incident waves. The phase difference between the antenna and AMC structures is 180°. Therefore, the AMC structures can be used to achieve RCS reduction. However, the bandwidth of zero-degree reflection phase of AMC structures is very narrow. In light of this, a novel gradually concentric ring arrangement AMC (GCRA-AMC) which can be applied to achieve the broadband RCS reduction is presented. The simulated and measured results show that the radiation performance of antennas is preserved when the GCRA-AMC is used. The RCS of the antenna with GCRA-AMC has been considerably reduced in a broad frequency band. The largest RCS reduction is more than 17 dB.