Simple and Accurate Method for Calculating the Resonant Frequency of a Rectangular Microstrip Patch Antenna with a Single Shorting Post

Abstract

A simple and accurate method for calculating the resonant frequency of arectangular microstrip patch antenna with a single shorting post is presented. The coaxialprobe-fed rectangular patch incorporates a shorting post which significantly tunes theoperating frequency of a rectangular microstrip patch antenna. A simple and accurateapproximate formula for the resonant frequency as a function of the post location,and of the other characteristic parameter of the antenna is given. It is found that theexperimental and theoretical results are in very good agreement.