Design a High gain patch antenna by HFSS -- 2

This design proposes a high gain microstrip active antenna is operating as transmitter and receiver at the same time with linear and circular polarization operations. This proposed work contains five essential parts such as high gain and broadband applications. These parts are listed the below as:
Part one mainly is dealing with several passive patch antennas. These selected passive antennas enjoy both high gain and broadband applications. Part two intends to convert the selected passive patch antennas into an active antenna. Part three intended to improve the performances of the propose active antennas. Part four, this proposed active antennas will be converted from linear polarization (LP) into circulation polarization (CP). Part five an enhancement element (which is known parasitic elements) are utilized in order to increase the gain of selected antennas.