A compact dual-frequency wilkinson power divider with open-ended stubs

Abstract

The T-network equivalent method for the quarter-wavelength transmission line has been extended to the arbitrary-length transmission line. With the help of using [A] matrix, the T-network equivalent circuit model for an arbitrary-length transmission line has been obtained. In order to validate such a method, a dual-frequency power divider, which works at 1 GHz and 1.8 GHz respectively, is designed, fabricated and measured. The results demonstrate that the size of the dual- frequency power divider can be miniaturized to 51.75% of the conventional dual-frequency power divider. Thus it is of great value in obtaining more compact, multifrequency RF font ends.