Patent ID: 6222428
Filing Date: 2001-04-24
Classification: H01P

Abstract:
A tuning assembly for tuning a dielectric resonator in a cavity defined by cavity walls, said dielectric resonator including two resonator bodies, namely a stationary resonator body and a movable resonator body, each of said two resonator bodies being made of a low-loss, high dielectric constant material, said tuning assembly comprising:a mounting wall constituting at least a part of one of said cavity walls and having an inside defining said cavity and an outside provided with a tuning adjustment means,a support structure mounted in only one of said cavity walls, namely in an opening in said mounting wall for supporting said two resonator bodies on said inside of the mounting wall,said support structure including two mutually slidable support elements, each being made of a rigid material,a first support element including a tubular sleeve portion and a radially outer support means for clamping a first one of said two resonator bodies axially between said tubular sleeve portion and said radially outer support means, anda second support element including a shaft being journalled inside said tubular sleeve portion, at least in a region located axially inside said mounting wall, and carrying at an end portion thereof a second one of said two resonator bodies,one of said two mutually slidable support elements being held stationary in relation to said mounting wall, whereas the other one of said two mutually slidable support elements is axially movable by said tuning adjustment means on said outside of said mounting wall,whereby said two slidable support elements are exactly aligned in relation to each other, and the two resonator bodies are precisely positionable in relation to each other so as to tune a resonant frequency of the dielectric resonator.