Wave transmission lines and networks – Coupling networks – Wave filters including long line elements
Patent
1997-02-05
2000-02-08
Ham, Seungsook
Wave transmission lines and networks
Coupling networks
Wave filters including long line elements
333207, 333203, H01D 1205
Patent
active
060232072
ABSTRACT:
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 counterbores 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 counterbore has a diameter larger than that of an inner conductor of each of the dielectric coaxial resonators.
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Hino Seigo
Ito Kenji
Ham Seungsook
NGK Spark Plug Co. Ltd.
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