PURPOSE: A multiple mode filter is provided to enable users to separately control each coupling by forming multiple cavities and performing the frequency filtering using the coupling among the cavities. CONSTITUTION: A multiple mode filter comprises the following: a first resonator(231) stored in a first cavity(221); a second resonator(232) stored inside a second cavity(222); a first coupling element(240) producing a coupling between a first mode and a fourth mode; a second coupling element(250) producing a coupling between a second mode and a third mode; a connection plate connecting the first and second coupling plates; and a housing(210) for protecting all the spare parts for the filter.
