IntroductionIn its most basic form, a Microstrip patch antenna consists of a radiating patch on oneside of a dielectric substrate which has a ground plane on the other sideFor good antenna performance, a thick dielectric substrate having a low dielectric constant isdesirable since this provides better efficiency, larger bandwidth and better radiation . In genaral Micro strip antennas are also known as “ PRINTED ANTENNAS ”. These are mostly used at microwave frequencies. Because the size of the antenna is directly tied the wavelength at the resonant frequency. Micro strip patch antenna or patch antenna is a narrowband wide-beam antenna. Structure of a Microstrip Patch Antenna