Design of high gain antennas using patch and ground deformations for satellite applications

In this work, high gain rectangular slotted array antenna with compact size is proposed. This radiator has nearly broad pattern of radiation and high gain, thus suitable for satellite applications. Multiband of operation is achieved by adding rectangular slots in the array structure. Meanwhile, more slots in the radiator improves the radiation effectively. Consequently, the side lobes formed due to the array structure can be eliminated by using the slots in the unit cell structure. Different slot shapes are also analyzed for effective gain improvement. The antenna operates between 17 and 19GHz and a superstrate is added to improve the gain up to 17dB.