Broadband filter with single-cavity four-mode cavity resonator

The invention discloses a broadband filter with a single-cavity four-mode cavity resonator. The broadband filter with the single-cavity four-mode cavity resonator comprises a cavity, a first port, a second port, a first perturbation metal body and a second perturbation metal body, wherein both the first perturbation metal body and the second perturbation metal body are arranged on the bottom of the interior of the cavity, both the center of the first perturbation metal body and the center of the second perturbation metal body are deviated from the center of the cavity, the first perturbation metal body and the second perturbation metal body are symmetrical with the longitudinal center line of the cavity as the center, both the first port and the second port are formed in the cavity and penetrate through the outer wall and the inner wall of the cavity, a first conductor assembly is arranged at the position of the first port, a second conductor assembly is arranged at the position of the second port, the axis o