Filtering SIW Power Divider With High Selectivity and Flexible Power Dividing Ratio

A substrate-integrated waveguide based filtering power divider (FPD) with a variable power dividing ratio and good selectivity is created. First, the multi-port FPD network is developed with an extracted pole topology that contains nonresonating nodes (NRN), which produces high selectivity in contrast to the current cross-coupled configuration. Secondly, a power dividing network is constructed based on the necessary power dividing ratio. Finally, using the suggested theory, a 2-way SIW FPD and a 4-way SIW FPD are successfully developed.