Novel high-reliability waveguide ring isolation assembly structure

Abstract

The invention discloses a novel high-reliability waveguide circulation isolation assembly structure, which comprises a circulator connected with a load, the circulator comprises two waveguide guide half cavities with the same structure, and each waveguide guide half cavity comprises a shell, a matching table, a ferrite base, a ferrite and a permanent magnet; y-shaped waveguide grooves are formed in the inner side of the shell, and the two Y-shaped waveguide grooves form a Y-shaped waveguide cavity; the matching table is installed on the shell and located at the center of the matching table. A welding groove is formed in the center of the Y-shaped waveguide groove, an installation hole is formed in the center of the matching table, the first end of the ferrite base penetrates through the installation hole and is welded to the ferrite, the second end of the ferrite base is fixed in the welding groove, and the permanent magnet is arranged on the outer side of the shell. According to the invention, the ferrite is fixed in the waveguide cavity through metal welding, a novel high-reliability fixing method for the separated cavity is designed, the method has the characteristics of high reliability, high heat conduction efficiency and the like, the problems of low connection strength and poor heat conduction capability are ingeniously solved, and the method has important significance for improving the reliability of a circulator and an isolator.

Description

technical field [0001] The invention relates to a novel high-reliability waveguide circular isolation component structure, in particular to a ferrite and metal step welding method, and belongs to the technical field of microwave components. Background technique [0002] At present, in the existing waveguide circulators and isolators, in order to ensure the positional connection and fixation between the ferrite and the metal cavity, organic adhesives are mainly used for bonding. Organic adhesives are sensitive to temperature changes. As the heating temperature increases and the heating time prolongs, the shear strength of the adhesive tends to decrease. First, when the working temperature is 120°C-150°C, the adhesive deteriorates irreversibly, the bonding strength drops significantly, and the ferrite falls off. Ferrite is the key component of the waveguide isolator, and the loss of ferrite will lead to irreversible failure of the performance of the circulator and isolator. ...

AI Technical Summary

Problems solved by technology

The invention fixes the ferrite in the waveguide cavity by means of metal welding, and at the same time designs a new high-reliability fixing method for the separate cavity, which has the characteristics of high reliability and high heat conduction efficiency, and cleverly solves the problem of low connection strength and poor thermal conductivity It is of great significance to improve the reliability of circulators and isolators

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