RF FILTER FOR TUNING COUPLING AMOUNT OR TRANSMISSION ZERO

摘要

PURPOSE: A RF filter for controlling a coupling amount or transmission zero is provided to control transmission zero related to skirt characteristics by controlling tuning elements which are stored in corresponding cavities through a cover. CONSTITUTION: A housing member(200) shields electromagnetic waves. A cover(202) is combined with the top of the housing member. The cover functions as an electrical ground. Cavities(208a,208b) are defined by partition walls(212). Tuning elements(214a,214b) are accepted to the cavities while being combined with the cover.