Low-air-pressure-resistant cylindrical cavity dual-module filter and duplexer

A filter and low-pressure technology, applied in waveguide-type devices, electrical components, circuits, etc., can solve the problems of low low-pressure discharge threshold, unable to meet the requirements of high power, etc., to reduce electric field distribution and improve low-pressure discharge. Threshold value, the effect of avoiding the phenomenon of low pressure discharge

Active Publication Date: 2014-08-27
XIAN INSTITUE OF SPACE RADIO TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, the current general-purpose filters and duplexers have low low-pressure discharge thresholds, which cannot meet the requirements of high power at low voltage.

Method used

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  • Low-air-pressure-resistant cylindrical cavity dual-module filter and duplexer
  • Low-air-pressure-resistant cylindrical cavity dual-module filter and duplexer
  • Low-air-pressure-resistant cylindrical cavity dual-module filter and duplexer

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Embodiment Construction

[0029] Such as figure 1 As shown, the anti-low pressure circular cavity dual-mode filter structure of the present invention is composed of two cylindrical cavities 1, two cylindrical cavities 1, that is, an input cavity and an output cavity, and the side walls of the two cylindrical cavities 1 Equipped with coupling window 4. The coupling window 4 is a protruding hollow prism or cylinder structure, one side of the prism or cylinder structure communicates with the side wall of the cylindrical cavity 1 . A coupling diaphragm 9 is sandwiched between the two cylindrical cavities 1 .

[0030] Such as figure 2 As shown, the structure of the low-pressure circular cavity dual-mode duplexer of the present invention is composed of two anti-low pressure circular cavity dual-mode filters, and the two filters share an output joint. In order to further reduce the occurrence of low-voltage discharge, an input coupling ring 8 is added to the input connector of the filter, and an output c...

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Abstract

The invention discloses a low-air-pressure-resistant cylindrical cavity dual-module filter. In the filter, the side wall of each cylindrical cavity is provided with a coupling window which is an extruded hollow prism or is of a cylindrical structure, wherein one surface of the prism or the cylindrical structure is communicated with the side wall of the cylindrical cavity; a low-air-pressure-resistant dual-module duplexer consists of two low-air-pressure-resistant cylindrical cavity dual-module filters which share an output connector. According to the invention, a filter with an externally extruded coupling window and the duplexer are adopted, the low-pressure discharge phenomenon is avoided from happening; and the filter and the duplexer have the advantages of large low air pressures, high Q values and the like, are simple to debug, and can be applied to narrow-band design.

Description

technical field [0001] The invention relates to a filter and a duplexer, in particular to an anti-low pressure circular cavity double-mode filter and a duplexer, which are mainly used in the field of microwave filters and multiplexers. Background technique [0002] In satellite tracking systems, cavity filters and duplexers are indispensable passive components. With the continuous development of satellite technology, the requirements for the power and loss of cavity filters and duplexers in various environments are getting higher and higher. [0003] At present, the cavity filters and duplexers commonly used in the world and at home include rectangular waveguide diaphragm filters and duplexers, Invar thin-walled circular cavity dual-mode filters and duplexers, etc. The former is generally used for broadband filters and duplexers. Its Q value is also relatively low, and the latter has small insertion loss and high Q value, and is widely used in satellite communication system...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/20H01P1/208
Inventor 李欣殷新社杨军郭洪英倪大宁袁建荣
Owner XIAN INSTITUE OF SPACE RADIO TECH
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