Band elimination filter

The embodiment of the invention discloses a band elimination filter, comprising a main line through which an electric signal flows through the band elimination filter; the resonator assembly comprises a plurality of crystal resonators, the first wiring end of each crystal resonator is connected with the main circuit, and the second wiring end of each crystal resonator is grounded; the inductor assembly comprises a plurality of inductors, the first wiring end of each inductor is connected with the main circuit, the second wiring end of each inductor is grounded, and for the first wiring end of any crystal resonator, the first wiring end of at least one inductor is connected with the first wiring end of any crystal resonator; the capacitor assembly comprises a plurality of capacitors, the capacitors are installed on the main circuit in series, and one capacitor is arranged between the first wiring ends of any two adjacent crystal resonators. According to the invention, the technical problem of poor filtering pr