| 摘要 |
The invention relates to a coaxial radio frequency filter, having one or more resonators, with at least one of the resonators having the following features: an inner conductor which is in the form of an inner conductor tube ( 2 ) and is composed of at least one first material; an outer conductor housing ( 1 ) having a housing base ( 1 a), a housing wall ( 1 b) and a cover ( 3 ) which extends from the housing wall ( 1 b) and can be positioned on the housing upper face, with the inner conductor tube ( 2 ) being electrically coupled to the housing base ( 1 a), and a free end ( 2 a) of the inner conductor tube ( 2 ) being located adjacent to the housing upper face and/or to the cover ( 3 ); a compensation element ( 6 ) composed of at least one second material, which is connected to the inner conductor tube ( 2 ); wherein the at least one second material of the compensation element ( 6 ) acts on the at least one first material of at least one subsection of the inner conductor tube ( 2 ) by exerting mechanical force, such that the thermal expansion of the at least one first material and/or the length of the inner conductor tube ( 2 ) are/is influenced.
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