Computer simulation of the directional antenna with circular polarization

Patch became popular since 1970’s mostly for space and commercial means. This antennas consist from conductive patch which is layered on subtract, they can have different configurations. Its relatively easy to analyze and make patch antennas they have preferred directivity, low cross-polarization, it is low profile antenna and it easy to install on flat and curved surface, it can made more easily with modern printed-circuit technology, compatible with Monolithic Microwave Integrated Circuit, mechanically robust and can be very versatile in terms of resonant frequency, this antennas can be installed on height speed planes, space devices, installed on satellites, missiles, in cars and mobile phones. It was required that patch antenna had circular polarization, which is different from already known research in which antenna has linear polarization.