Design and development of aperture-coupled microstrip antennas for intensified bandwidth, adequate gain and low cross-polarization

Abstract

This article presents a novel design of complementary- symmetry aperture-coupled microstrip antenna for wideband, adequate gain, and low cross-polarization. An experimental bandwidth of 129.51% with gain of 5.17 dB is achieved. The antenna operates from 3.85 to 18 GHz, which covers C, X, and Ku bands. The obtained cross-polar power level is -30.5 dB down with respect to co-polar. The effect of coupling aperture and microstrip feedline is studied and reported. © 2009 Wiley Periodicals, Inc.