Communication device, cavity filter, resonating tube and manufacturing method thereof

The technology of a cavity filter and manufacturing method, which is applied in the field of filters, can solve the problems of high cost of Invar materials, and achieve the effects of low cost, cost saving and good performance

Active Publication Date: 2010-11-03
ANHUI TATFOOK M&E TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problem in the prior art that the cost of using Invar materials for filters is very high, the present invention uses quartz glass materials with a low linear expansion coefficient to manufacture resonant tubes, and also provides cavity filters and communication equipment with the resonant tubes

Method used

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  • Communication device, cavity filter, resonating tube and manufacturing method thereof
  • Communication device, cavity filter, resonating tube and manufacturing method thereof
  • Communication device, cavity filter, resonating tube and manufacturing method thereof

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Embodiment Construction

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0018] See figure 1 , figure 1 is a schematic diagram of a partial structure of a cavity filter 1 including a resonant tube 2 according to the first embodiment of the present invention.

[0019] Such as figure 1 As shown, in simple terms, the cavity filter mainly includes a cavity 1 , a resonance tube 2 , a tuning rod 3 and a cover plate 12 . Of course, the cavity filter of this embodiment also includes various other conventional components or stru...

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Abstract

The embodiment of the invention discloses a cavity filter, a resonating tube and a manufacturing method thereof, wherein the resonating tube is arranged in the cavity of the cavity filter and is made of quartz glass, the resonating tube surface is metalized and during the metallization treatment on the resonating tube surface, firstly the surface is chrome plated in vacuum, then suffered to electrocoppering and silver treatment. Compared with the traditional resonating tube which is made of invar material, the resonating tube which is made of quartz glass material has low cost and good temperature drift index. Moreover, the embodiment of the invention also discloses a communication device which uses the cavity filter, the cavity filter is arranged at a signal transmit-receive circuit part of the communication device, equipment cost can be effectively reduced by adopting the resonating tube which is made of quartz glass material.

Description

【Technical field】 [0001] The invention relates to the technical field of filters, in particular to a cavity filter, a resonant tube and a manufacturing method thereof, and also relates to a communication device using the cavity filter. 【Background technique】 [0002] At present, the frequency spectrum of the communication system is becoming more and more crowded. Mobile communication is developing from GSM900, 1900MHz to TD2010-2025MHz, Wimax 3.5GHz high-frequency band, the volume of the cavity filter is getting smaller and smaller, and the structure of the base station system is more compact and flexible. The temperature drift of the cavity filter (hereinafter referred to as temperature drift) generally increases with the increase of the frequency band. At low frequencies, the temperature drift index of the filter is relatively small. The temperature drift is already very large. [0003] During the research and practice of the prior art, the inventors of the present invent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/207H01P11/00
CPCH01P1/207H01P1/2084H01P1/2053
Inventor 孙尚传周彦昭
Owner ANHUI TATFOOK M&E TECH
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