Antennas are one of the basic building blocks of wireless technology. Recently, the demand for miniaturization and integration of many components of the telecommunication equipment is of great interest. A patch antenna is one important component for research activity due to its multiple advantages like low cost, being easy to fabricate and compact size. In this study, a 2.45 GHz rectangular patch antenna is simulated in ANSYS-HFSS. Further, the size of the patch is reduced by 38% with a circular, complementary spilt-ring resonator on the ground plane of the antenna, which basically acts as a metamaterial. In this seminar, fundamental aspects of the antenna radiation, the design procedure of a patch antenna will be addressed. Further different fabrication techniques for patch antenna manufacturing will be discussed.