Single-layer cross-junction power divider for the center feed in slotted waveguide arrays

摘要

The authors propose a novel 3 ports power divider called as a crossing junction in a waveguide, which is used as the feed waveguide for a single-layer slotted waveguide arrays. It is placed at the center of the aperture and the length of radiating waveguides is halved; the long line effect is halved and the frequency bandwidth would be doubled. In this divider, the location of four posts in the feed waveguide are designed by Galerkin's method of moments to suppress the reflection and to control the amplitude and the phase of the power divided into the radiating waveguides. Two types of the cross junction with a different divided power ratio are designed and are confirmed by experiments using 4GHz band models.