Microwave switch for sealed space

Abstract

A microwave switch for a sealed space comprises a microwave switch body used for the sealed space and a sealed casing. A radio frequency connector in the body fixes an inner conductor and an outer conductor in an insulating material sintering mode, the connector and a guiding seat are sealed and connected by a sealing process, and the guiding seat and the casing are sealed and connected through laser welding or brazing. A control signal leading-out end and the insulating material are connected in a sintering mode, and the control signal leading-out end and the insulating material are finally fixed on the casing. By the above sealing mode, an integrated sealed structure of the microwave switch is achieved, gas are filled inside for protection. The microwave switch for the sealed space can effectively improve interior heat conduction capacity of the microwave switch, eliminates vacuum micro-discharge and vacuum cold welding, and can bed improved in power load capacity in vacuum environment.

Description

technical field [0001] The invention relates to a microwave switch. Background technique [0002] In order to avoid low-voltage discharge, the existing coaxial microwave switch for space is not sealed, so that when the microwave switch is working on the rail, the gas in the guiding cavity can be exhausted as soon as possible to achieve a vacuum working state. The existing microwave switch has the same internal and external atmosphere, and it is easy to ionize the internal gas when switching on and off a microwave signal of a certain power under low pressure state, resulting in low pressure discharge phenomenon; under aerospace vacuum conditions, vacuum micro discharge phenomenon is easy to occur; at the same time, gold plating Due to the effect of Coulomb force between the contacts, it is easy to cold weld the contacts together, and the contacts cannot be disconnected; the above phenomena can cause the product to fail, resulting in the failure of the whole machine, and reduc...

AI Technical Summary

Problems solved by technology

The existing microwave switch has the same internal and external atmosphere, and it is easy to ionize the internal gas when switching on and off a microwave signal of a certain power under low pressure state, resulting in low pressure discharge phenomenon; under aerospace vacuum conditions, vacuum micro discharge phenomenon is easy to occur; at the same time, gold plating Due to the effect of Coulomb force between the contacts, it is easy to cold weld the contacts together, and the contacts cannot be disconnected; the above phenomena can cause the product to fail, resulting in the failure of the whole machine, and reducing the reliability of the product in the space environment. incalculable loss

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