Power divider with arbitrary power ratio and arbitrary ripple level using filter synthesis techniques

A novel type of power divider, featuring arbitrary power ratio and arbitrary ripple level, is proposed. This divider consists of a two-port filtering structure connected to a circulator and is straightforwardly designed using microwave filter synthesis techniques. An example is provided, with low-pass domain synthesis and experimental divider demonstration at the X-band, after low-pass to bandpass transformation. The experimental divider prototype is an iris coupled-resonator waveguide structure, whose response is found in good agreement with theoretical predictions.