Application of microstrip lines for the realization of patch antennas

Abstract

This paper presents a simple analytical analysis method for electrically thick rectangular probe fed microstrip patch antenna. The method is a hybrid analysis method which is a combination of the simple cavity model and full wave modal expansion analysis. First, a cavity model is developed and then a full wave modal expansion of both the resonant and non-resonant mode is derived. Based on this expansion, radiation pattern, directivity, resonant frequency, input impedance, bandwidth, and radiation efficiency are computed and good agreement with reported experimental results is achieved. Design procedure of thick rectangular probe-fed microstrip patch antenna is presented based on a simple analytical analysis method developed. Design curves are plotted for directivity, resonant frequency, input impedance, bandwidth, and radiation efficiency.