| 摘要 |
A dielectric filter having a plurality of dielectric coaxial resonators provided on a dielectric ceramic block, which is capable of equalizing the resonance frequencies of all the dielectric coaxial resonators with ease, and a method for adjusting the resonance frequency of the dielectric filter, in which one or more spot facing or counterbore is provided for adjusting the substantial resonance frequency of each of the dielectric coaxial resonators or for coping with a tendency toward any deviation of the resonance frequency based on the structure of the dielectric filter, each spot facing or counterbore has a diameter larger than that of an inner conductor of each of the dielectric coaxial resonators. <IMAGE> |
