Power splitting transition for circularly polarized feed networks

A new power splitting transition is introduced that is based on a step transformer approach for interfacing two square waveguides with a mutual alignment of the cross sections of 45/spl deg/. It is shown to provide high-performance matching properties while maintaining easy and low-cost fabrication. A well-suited mode matching CAD has been used for study and hardware design. Verification is provided by experimental results of transitions realized for the 27 GHz band.