TM dielectric resonator, method for implementing TM dielectric resonator and TM dielectric filter
A method for implementing a TM dielectric resonator is provided, which includes: a dielectric resonant column component with a metal connecting plate is machined; a metal cavity with an opening at one end is machined; the metal connection plate of the dielectric resonant column component is fastened to the inner wall of the metal cavity by a screw; the opening of the metal cavity is covered with a prefabricated cover plate; and a prefabricated tuning screw is screwed from the cover plate into the metal cavity.
1. A method for implementing a TM dielectric resonator, comprising:
machining a dielectric resonant column component with a metal connecting plate;
machining a metal cavity with an opening at one end of the metal cavity;
fastening the metal connection plate of the dielectric resonant column component to an inner wall of the metal cavity by a screw;
covering the opening of the metal cavity with a prefabricated cover plate; and
inserting a prefabricated tuning screw through the cover plate into the metal cavity;
wherein the step of machining a dielectric resonant column component with a metal connecting plate comprises:
metalizing one end of a prefabricated cylindrical dielectric resonant column;
machining an annular groove and a first circular groove on an upper end surface and a lower end surface of a prefabricated disc-shaped metal connecting plate respectively;
placing the metalized end of the dielectric resonant column in the annular groove and welding the dielectric resonant column with the metal connecting plate; and
machining a second circular groove on the inner wall of the metal cavity which matches the lower end surface of the metal connecting plate.
2. The method according to claim 1 , wherein a threaded hole which matches threads of the screw is further machined on the inner wall of the metal cavity.
3. A TM dielectric filter, comprising one or more TM dielectric resonators, wherein each of the one or more TM dielectric resonators comprises:
a metal cavity with an inner part having an opening at one end of the metal cavity;
a dielectric resonant column component which is provided with a metal connecting plate and is arranged in the metal cavity;
a screw which fastens the dielectric resonant column component to an inner wall of the metal cavity;
a cover plate which covers the opening of the metal cavity to seal the inner part of the metal cavity; and
a tuning screw which is inserted through the cover plate into the metal cavity;
wherein the dielectric resonant column component with the metal connecting plate comprises:
a disc-shaped metal connecting plate, on the upper end surface and the lower end surface of which an annular groove and a first circular groove are formed, respectively; and
a cylindrical dielectric resonant column welded inside the annular groove;
wherein one end of the dielectric resonant column is metalized and in contact with the metal connecting plate; and
a second circular groove is machined on the inner wall of the metal cavity and matches the lower end surface of the metal connecting plate.