Abstract: This paper describes the analysis and design of a class of slotted rectangular microstrip antennas for dual band operations. Slots are cut to tune the patch at suitable dual frequency operations..The simulation and modeling of these configurations have been done using Ansoft HFSS software. The resonant frequencies and dimensions are computed from the cavity model of rectangular patch. The parameters of antenna such as return loss, VSWR, radiation patterns and gain have been found and design is optimized for best results. The results are experimentally verified and the results are found in good agreement with those of theory.

Keywords: Coaxial feed, slotted rectangular microstrip patch antenna, dual band antenna.