1994 年 18 巻 53 号 p. 1-6
This paper describes the numerical result on Circularly Polarized Printed Array antenna composed of Strips and Slots (CP-PASS) fed by stripline. The basic element consists of a slot and strip element with a "probe". In this paper, the input immittance of the strip element and the slot of CP-PASS are calculated by FDTD method. The calculated result confirms the mutual coupling between these elements, which was experienced in the experiments. In additon, the direction of parallel plate mode propagation was calculated by FDTD method, and we examined the parallel plate mode suppression with the shorting pins and the probe.