Comparison of Rectangular and Circular Microstrip Fed Patch Antennas at 5.76 GHz

Abstract

A Comparative study of rectangular and circular shape microstrip patch antennas at 5.76 GHz band is presented in this paper. Computer Simulation Technology (CST) microwave studio is used as the software environment to design and compare the performance of the antennas. Based on the results and analysis, it is found that rectangular patch antenna shows about 8 dB higher return loss then return loss of circular patch antenna. In addition, rectangular patch antenna has improved gain value of 7.499 dB then that of the circular patch with gain 7.114 dB. The radiation efficiency of both rectangular and circular shaped microstrip fed patch antennas is nearly the same.