Device for reducing passive intermodulation of circular waveguide duplexer and method thereof

A passive intermodulation and duplexer technology, applied in waveguide devices, electrical components, circuits, etc., can solve the problems of single structural improvement scheme, high design cost, and long experiment cycle, so as to shorten the design cycle and design cycle The effect of long life and low processing cost

Inactive Publication Date: 2019-03-26
BEIJING INSTITUTE OF TECHNOLOGYGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the suppression of passive intermodulation of microwave components at home and abroad is mainly obtained through repeated process experiments. The experiment period is long and the design cost is high. However, the structural improvement scheme for suppressing passive intermodulation of space microwave components is single and the effect is not good.

Method used

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  • Device for reducing passive intermodulation of circular waveguide duplexer and method thereof
  • Device for reducing passive intermodulation of circular waveguide duplexer and method thereof
  • Device for reducing passive intermodulation of circular waveguide duplexer and method thereof

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Experimental program
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Effect test

Embodiment 1

[0029] A device for reducing passive intermodulation of a circular waveguide duplexer disclosed in this embodiment includes a non-conductive medium flange 1, metal screws 4 required for fixing the non-conductive medium flange, a non-conductive medium sheet 5, and a non-conductive medium sleeve 7. Non-conductive medium screw 9. The circular waveguide duplexer includes frequency modulation, tuning coupling screw 2, metal cavity wall 3, input and output feed rod 6, coaxial connector inner core 8, coaxial connector 10, second cavity body 11, first A cavity 12 , a main waveguide 13 , and a waveguide port 14 at the common end of the duplexer.

[0030] The cavity includes a second cavity 11 and a first cavity 12 . At the frequency tuning and tuning coupling screw 2 and the cavity, a non-conductive medium flange is used to isolate the metal-to-metal contact, so as to realize the connection mode of metal-non-conductive medium-metal.

[0031] At the joint between the frequency modulat...

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Abstract

The invention, which relates to the field of microwave wireless communication, discloses a device for reducing the passive intermodulation of a circular waveguide duplexer and a method thereof. According to the invention, metal-air-metal contact is realized by using a dielectric flange and metal-non-conductive-dielectric-metal contact is realized by using a dielectric sheet, so that passive intermodulation of microwave parts is suppressed. The device comprises a non-conductive dielectric flange, metal screws required by fixing the non-conductive dielectric flange, a non-conductive dielectric sheet, a non-conductive dielectric sleeve, and non-conductive dielectric screws. The device has advantages of simple structure, light weight, high design cost rate and short design period. The device and the method thereof can be applied to the fields of aerospace and ground communication widely.

Description

technical field [0001] The invention relates to the field of microwave wireless communication, in particular to a device and method for reducing passive intermodulation of a circular waveguide duplexer. Background technique [0002] Passive intermodulation (PIM) occurs when two or more signals pass through passive components. In a satellite communication system, a pair of antennas may undertake both transmitting and receiving tasks, and the working power range may reach several watts, tens of watts or even higher. The existence of contacts, junctions, interfaces or devices with nonlinear voltage and current conduction characteristics in passive microwave components will cause system performance degradation, because the current of multiple carrier channels can flow through these junctions or devices at the same time, due to these The mixing effect of the carrier produces new unwanted intermodulation frequency components, and these signals may reach the receiving channel to f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/208
Inventor 张洪太王琪封国宝何鋆胡天存
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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