Modelling and testing of symmetrical n-port planar power dividers

Abstract

Adopting a unified approach, the symmetrical microstrip ring coupler was analyzed using a first-order eigenmode method. Several prototypes, ranging from 2- to 8- ports, were subsequently developed to test the validity of the model. The design of an optimum broadband 4- port power divider was also undertaken, followed by a qualitative investigation into the effects of coupler dimension variations on its performance.