Dual-Band Filtering Power Divider Based on Step Impedance Resonator

This paper proposes a dual band power divider with filtering characteristic consisting of step impedance resonator and coupled transmission line which is different from traditional Wilkinson power divider. The SIR structure takes charge of multiband as well as filter while the coupler contributes to power splitting and direct current blocking. The design is analyzed and simulated, and eventually demonstrated to be effective with its experimental result.