A design approach for inset-fed rectangular microstrip antennas

摘要

The goal of this paper is to study the dependence of resonant input resistance of the inset-fed patch on the notch and feed-line geometry. Different geometries, substrate materials, and feed lines were considered. A simple CAD formula for the input resistance is obtained. The effect of the notch on the radiation pattern is also studied to see how it influences cross polarization.