Performance improvement of RMSA using different substrates

To Study the behavioral characteristics of the microstrip patch antennas with different dielectric substrates such as Glass epoxy, FR-4 and RT-Duroid. The paper gives the comparative study of Rectangular Microstrip Patch Antenna's of different dielectric substrates for design parameters like Return loss, Bandwidth, Gain, Directivity and Efficiency at 2.5GHz. Different dielectric materials have different relative permittivity and this varies the radiating capability of antennas.