Broadband Fabry-Perot resonator printed antennas using FSS superstrate with dissimilar size

Abstract

In this paper, the broadband Fabry-Perot resonator antenna composed of single-layer FSS superstrate with dissimilar size square patch fed by U-slotted patch is proposed, which is validated by two cases of samples. It is demonstrated that the common bandwidth for (3 dB directivity-drop and -10 dB returned loss of the Fabry-Perot resonator antenna with the tapered FSS superstrate increases by 7.99% to 12.2% for two different cases, as compared to that of previously single layer FSS with similar size. At the same time the side-lobe level of antenna can also be improved/The simulated and measured results are good agreement each other. © 2008 Wiley Periodicals, Inc.