Dielectric resonator and high frequency circuit element using the same

摘要

A dielectric resonator of the present invention becomes excited in the TM mode and is provided with a dielectric material, a shielding cavity surrounding the above-described dielectric material and coupling antennas attached to the above-described shielding cavity so as to penetrate from the outside to the inside of the above-described shielding cavity, wherein it is preferable for the above-described dielectric material to be formed in a pillar form extending in the longitudinal direction, wherein it is preferable for the above-described shielding cavity to be formed so as to be hollow and so as to extend in the longitudinal direction and wherein it is preferable for the above-described dielectric material to be secured to the inside of the above-described shielding. cavity in a manner such that the longitudinal direction of the dielectric material is the same as the longitudinal direction of the above-described shielding cavity.