Log Periodic Implementation of Star Shaped Patch Antenna for Multiband Application Using HFSS

In this paper the conventional rectangular patch has been modified and its log periodic implementation has been done . FR4 Epoxy material for the substrate has been taken into account . The star shape has been used for the higher mode excitation for the patch antenna and then its log periodic implementation has been done to operate the antenna in wideband and multiband .The substrate and the ground plane are of the size 20.8 cm × 10.4 cm. Line and coaxial feeding techniques have been implemented .The Return loss , VSWR, Gain vs Frequency etc parameters are determined from the simulation results.