A novel high performance dual-pass band quadruple power filter

The invention discloses a novel high-performance dual-pass band four-power dividing filter, comprising a rectangular dielectric substrate with a metal ground plane on a lower surface, wherein an inputport feed line, a first output port feed line, a second output port feed line, a third output port feed line and a fourth output port feed line are arranged on an upper surface of the rectangular dielectric substrate; a first ring branch loading type multimode resonator is arranged between the second output port feed line and the input port feed line, and a second ring branch loading type multimode resonator is arranged between the fourth output port feed line and the input port feed line; a first isolation resistor is provided between the first coupling input line and the second coupling input line, a second isolation resistor is provided between the first coupling output line and the second coupling output line, and a third isolation resistor is provided between the third coupling output line and the fourth cou