The utility model discloses a
broadband band-pass filter capable of improving right-end suppression. The filter comprises a cavity and a cover plate, wherein the cover plate is fixedly arranged on the cavity; a plurality of resonators are fixedly installed in the cavity, and two
dumbbell-shaped flying rods and two protruding connecting ends are further installed in the cavity. A plurality of frequency tuning assemblies, a plurality of main
coupling tuning assemblies and four cross
coupling tuning assemblies are mounted on the cover plate, each frequency tuning
assembly is electrically connected with each
resonator, and two cross
coupling tuning assemblies are electrically connected with two
dumbbell-shaped flying rods; and the other two cross coupling tuning assemblies are loaded with coiled screw fly rods and are electrically connected with the two connecting ends respectively. According to the
broadband band-pass filter for improving right-end suppression, the advantages of a common
dumbbell-shaped flying rod and a
metal belt disc screw flying rod are combined together, left-end high suppression is met, high-end
resonance suppression can be improved, the size and
insertion loss are small, and the bearing power is large.