An ultra wide band power divider for antenna array feeding network

This paper presents a design procedure for a physically small, equal phase and equal power, 1-to-4 ultra-wideband Wilkinson power divider is presented. Initially, a 1-to-2 divider was designed and optimized for the full 3.1 GHz to 10.6 GHz range. The 1-to-4 divider was realized using three 1 to 2 dividers, and further optimized for full band insertion loss, return loss, and isolation. The circuits were constructed using a 0.75mm thick Rogers RO3035 substrate, and experimentally validated.