Design of Wide Passband Filtering Power Divider on Single Substrate Integrated Waveguide Quintuple-Mode Cavity

This paper proposes a novel wideband filtering power divider (FPD) based on quintuple-mode substrate integrated waveguide (SIW) resonator. The electric field distribution of the degenerating modes in the quintuple-mode power divider (PD) resonator are first studied to illustrate the PD working principle. A wide passband FPD under the resonance of the five resonant modes is achieved. The Simulated results show that the -15 dB bandwidth is about 48.7^% at 6.86 GHz frequency center.