RCS reduction of microstrip antenna by complementary split-ring resonators structure

Abstract

In this paper, a new approach for the radar cross section (RCS) reduction of microstrip patch antenna is developed. For this purpose, complementary split-ring resonators (CSRRs) are etched on the ground of the microstrip patch antenna. A conventional microstrip patch antenna is designed with the central frequency of 5.0 GHz. The monostatic RCS of the microstrip patch antenna with CSRRs can be reduced as much as 6.3dB compared to that of the conventional antenna while maintaining almost the same radiation characters.