Band pass filter comprising sets of first and second dielectric resonators disposed within a housing, where the first and second dielectric resonators have an adjustable interval there between

摘要

A band pass filter suitable for varying the center frequency of the passband and a method for controlling the band pass filter are provided. A band pass filter of the present invention includes: two TE01δ-mode dielectric resonators (10) and (20) disposed so as to oppose to each other; and a housing (30) made of metal enclosing the two dielectric resonators (10) and (20). An opposing interval between two dielectric resonators (10) and (20) is variable.