Optimization of Resonant Frequency of Shorted Elliptical Patch

Abstract: In this paper, a parametric study on the resonant frequency of shorted elliptical microstrip antenna is done and optimization of feed probe location for optimum radiation efficiency is carried out. A feed probe is located off-axis to generate closely spaced dual resonances for weakly elliptical patch. Using multiple shorting posts, the resonant frequencies of these modes are selectively tuned. Measured results are compared with simulation studies (IE3D) for validation.