Impedance matching of dielectric loaded T-junction in X-Ku band

In this study, impedance matching of H-plane T-junction in the rectangular waveguide for both equal and unequal power division has been investigated. The matching has been made by a septum and two symmetric irises and the performances of power dividers have been viewed for both vacuum and dielectric loaded rectangular waveguides. Lossy Rogers RO4450B as dielectric material has been preferred. At 12GHz, the operating frequency, E-field distribution of T-junction, return loss of the input port and phase difference and power ratio between the output ports have been obtained. In addition, return loss better than 18dB was achieved in 10-14GHz frequency range according to the simulation results.