Four Way Power Divider and Combiner Based on a Luzzatto Divider Using Vertically Installed Planar Bridge Isolator

This paper proposes a four-way power divider and combiner based on Luzzatto power divider (LPD) with optimal isolation network study. New implementation based on vertically installed planar isolator permits to have even more number of power way. The LPD rules are derived from the most popular Wilkinson divider. To overcome the 2-D topology limitation, the vertical planar structure has been exploited to realize a bridge isolator between opposite ports. Measurement results shows more than 20 dB of isolation between each two ports and bandwidth of 40% at the operating frequency of 10 GHz. Lower loss, broader bandwidth and simple structure, makes the proposed design a proper candidate for high isolation applications.