A microwave TM mode cavity resonator wherein a portion of the length of the resonator body is a dielectric and a further portion is a metal

摘要

A microwave TM mode resonator comprising a resonator cavity 2 defined by an electrically conducting cavity wall 3, the cavity wall comprising first and second spaced apart end faces 4. 5 and a side wall 6 extending therebetween; and, a resonator body 9 within the cavity extending along its length between the first and second end faces; a portion of the length of the resonator body being a dielectric 10 and a further portion of the length being a metal 11. Aspects of the invention include: the resonator body comprises a dielectric portion sandwiched between metal portions; at least one of the first and second end faces is spring loaded, the spring urging the end face into contact with the resonator body; the resonator comprising a tuning screw, wherein the tuning screw may extend through a dielectric portion of the resonator body into a further metal portion of the resonator body.