Encapsulation structure of microwave isolator

Abstract

The invention provides an encapsulation structure of a microwave isolator. The encapsulation structure comprises a shell and a bottom plate, wherein the shell is provided with a side wall and a bottom surface, a cylindrical cavity is formed by the shell, the side wall is provided with a flange extruding to the outside; the bottom plate has a plane structure, a uniformly magnetized conducting plate, a central conductor, a microwave ferrite, a temperature compensating gage and a permanent magnet are arranged on the bottom plate, the shell is turned upside down on the bottom plate, the uniformly magnetized conducting plate, central conductor, microwave ferrite, temperature compensating gage and permanent magnet are arranged in the cylindrical cavity of the shell, the central conductor penetrates through a notch on the side wall to be connected with a load on the bottom plate, and the shell is fixed with the bottom plate through screws. The invention does not use a cover plate, the cost of the microwave isolator is obviously reduced on the basis of not changing the performance of elements, the assembling and debugging are simple and easy to operate, the volume is small, the performance is good and the encapsulation structure is very practical.

Description

technical field [0001] The invention relates to a packaging structure of a microwave isolator, which belongs to the technical field of wireless communication. Background technique [0002] The housing is an indispensable part in the existing circulators and isolators, and the housing undertakes functions such as mechanical support, packaging, magnetic conduction and conduction. A good packaging or assembly method can provide a good magnetic circuit, electrical path and mechanical reliability for the circulator or isolator; make the circulator or isolator have small size, good temperature stability, low insertion loss, good electromagnetic performance and reliability Advantages of high sex. [0003] At present, the packaging method of the existing isolator adopts one of three types: 1) the packaging method of the shell and the cover plate is screwed; 2) the packaging method of the upper and lower double bottom plates plus the middle shell; 3) the casing and the cover plate a...

AI Technical Summary

Problems solved by technology

These assembly forms all have their structural deficiencies: with the screw cap packaging method, the inner edge of the shell and the outer edge of the cover plate need to be processed with threads, which increases the machining cost; while the double bottom plate plus intermediate shell packaging method increases the number of parts, Increased cost, and it is difficult to provide a good magnetic path; the housing and cover are press-fitted, requiring special stamping equipment and cannot be disassembled for reassembly or repair

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