MULTI MODE FILTER ENABLING ADJUSTMENT OF BANDWIDTH

摘要

PURPOSE: A multiple mode filter for controlling a bandwidth is provided to improve productivity by easily controlling coupling quantity when a processed tolerance is generated. CONSTITUTION: A coupling plate(240) is installed at a first cavity(200) and a second cavity(202). A first resonator(210) is accommodated to the first cavity. A second resonator(212) is accommodated to the second cavity. A first control bolt(230) is inserted into the inside of the first cavity through a cover. A second control bolt(232) is inserted into the inside of the second cavity through the cover. A screw thread is formed on the outer peripheral surface of the first control bolt and the second control bolt.