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Koaxialer resonator

A coaxial resonator and resonator technology, applied in resonators, waveguide devices, electrical components, etc., can solve problems such as metal wear and narrow tuning area

Inactive Publication Date: 2005-11-16
斯皮纳有限公司电气技术工厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Tuning by means of a dielectric has the disadvantage of a very narrow tuning zone
Tuning screws or tuning pins have the disadvantage that metal wear can occur while tuning, which can cause intermodulation components

Method used

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  • Koaxialer resonator
  • Koaxialer resonator

Examples

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Embodiment Construction

[0019] This embodiment involves a resonator having a center or resonant frequency of 1750 MHz and a tuning range of 640 MHz. This resonator is part of a four-loop bandpass filter for mobile communications.

[0020] The resonator comprises a cup-shaped metal housing 1 which in this embodiment is square in side and top view. However, other geometries are also possible. The housing 1 is closed in a high-frequency-tight manner by a cover 1a. A tube 2 extends from the middle of the housing bottom 1b in the direction of the cover 1a. As shown, the tube 2 may be integral with the bottom 1b. Press or glue a threaded sleeve 3 into the pipe 2 from the opening on the bottom side. The threaded sleeve 3 has an internal thread portion, and a tuning screw 4 is screwed into the internal thread portion. The tuning screw 4 receives the lower end of a ceramic rod 5 . A metal sleeve-shaped or cup-shaped tuning body 6 is fitted over the upper end of the ceramic rod, said tuning body is conce...

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PUM

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Abstract

A coaxial resonator comprises a housing with walls which are metallically conductive at least on the inner side, with an injection and tapping opening and with a tube rejecting from a wall of the housing into its inner space, being metallically conductive and being conductively connected with said wall. The tube ends at a distance from the inner surface of the opposite wall and comprises a metallic tuning body which is axially displaceable. The risk that intermodulation products are produced which are caused by abraded parts produced during the displacement of the tuning body is prevented in such a way that the tuning body is held coaxially in the tube by way of a rod made of dielectric material, without contacting the tube conductively, and that the end of the rod averted from the tuning body is configured for displacing the tuning body.

Description

technical field [0001] The invention relates to a coaxial resonator having the features stated in the preamble of claim 1 . Background technique [0002] A variety of resonators of this type are known. Several such resonators can have a common housing. And it has an inner cavity connected as a multi-loop high-frequency filter. The housing of a single resonator or a plurality of resonators can consist entirely of metal, in which case the machined interior is closed with a metal cover. Optionally, the housing and / or the cover can also consist of a plastic that is metallized, for example electrically conductively coated, at least on the inside. The same is true for the conductive tube that extends into the lumen and acts as an inner conductor. Three possibilities are known in the prior art for tuning resonators of this type: [0003] - Screw in at least one tuning screw in at least one wall. In particular, the tuning screw can pass coaxially with the inner conductor throu...

Claims

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Application Information

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IPC IPC(8): H01P7/04
CPCH01P7/04
Inventor P·基勒
Owner 斯皮纳有限公司电气技术工厂
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