A Tri-band Wilkinson Power Divider Based on Triple Section Step-Impedance Resonator

In order to solve the scarcity problem of microwave spectrum resources, this paper proposed a tri-band Wilkinson power divider(WPD) based on a triple section stepped impedance resonator. The tri-band WPD introduces a triple section stepped impedance resonator and an open stub to achieve tri-band making the power divider have filtering properties. The board size of WPD is 25×20mm
²
. The simulated results show that the center frequencies of the tri-band WPD is 2.45 GHz, 4.41 GHz and 6.11 GHz respectively, the reflection is less than -10dB, the isolation is less than -15dB, and the insertion loss is less than 4dB.