WAVEGUIDE TYPE BRANCHING FILTER

摘要

PROBLEM TO BE SOLVED: To provide a small-sized, low loss and low cost waveguide type branching filter. SOLUTION: The waveguide type branching filter is provided with: a dielectric block 19a that has the outer shape of a common waveguide 1; a dielectric block 19b that has the outer shape of a waveguide filter 2 and an iris 9 which is connected to a prescribed side face of the dielectric block 19a corresponding to a passing frequency f1; a dielectric block 19c that has an outer shape of a waveguide filter 3 and an iris 10 which is connected to a prescribed side face of the dielectric block 19a corresponding to a passing frequency f2, and a conductor film 20 that is closely formed to nearly the entire front circumference of the dielectric blocks 19a-19c except input/output terminals 16-18.