WAVE-GUIDE PI-JUNCTION WITH AN INDUCTIVE POST

The authors propose a waveguide pi-junction with an inductive post for the element of a multiple-way power divider in a single-layered slott ed waveguide array. This pi-junction splits part of the power into two branch waveguides through one coupling window, and can excite densely arrayed waveguides at equal phase and amplitude. The power dividing c haracteristics are analyzed by Galerkin's method of moments and are co nfirmed experimentally. Reflection from the pi-junction is suppressed to the level below -30 dB over 5.4% band-width by attaching an inducti ve post.