Performance Improvement of Microstrip Patch Antenna using Substrate with Lower Relative Permittivity

Antenna with higher directivity and compact size is the need of hour, latest trends suggest that lot of work has been going on in this field. In this paper the performance of patch antenna with substrate having higher relative permittivity has been compared with that of patch antenna with substrate having low value of relative permittivity. The simulation results suggests that patch antenna with lower relative permittivity substrate has better value of directivity and return loss, these parameters play significant role in antenna designing.