Design of tapered slot antenna divided into some parts

This paper proposes a design method for a tapered slot antenna divided into parts. Previous reports have discussed the matching characteristics obtained by the S-parameter method related to the measurement of the input impedance. In these reports, the measured and simulated input impedances were shown to differ in the high frequency region. This article shows that better agreement can be achieved by the appropriate compensation of the feed reference. Moreover, a design parameter for the taper is introduced when a high gain and low sidelobe level are obtained.