Design of A Compact Four-way Filtering Wilkinson Power Divider with Satisfactory Performance

A compact four-way filtering power divider (FPD) integrating conventional Wilkinson power divider with only one pair of triple-mode resonators is presented in this paper. Comparing with other existing four-way FPDs, it brings out not only very compact size, flexible design freedom, but also nice output return loss, sharp frequency selectivity as well as good port-to-port isolation. Four demonstration, a prototype FPD operating at 2.4 GHz has been designed, fabricated and measured. Both simulated and measured results are provided with reasonable agreement.