Shorted patch antenna with parasitic elements

This paper focuses on two techniques to improve the performance of a conventional rectangular microstrip patch antenna in terms of impedance bandwidth and gain. The effect of shorting the patch and adding layers of parasitic elements will be investigated in this paper using CST Design Studio. The antenna was designed to tune at 2.45 GHz and uses FR4 board. It is found that notable increase of bandwidth and gain after modifications were made to the normal patch.