Isolator/circulator and manufacturing method thereof

Abstract

The invention provides an isolator / circulator and a manufacturing method thereof. The isolator / circulator comprises a bottom plate, a cylindrical shell with a cover and an in-cavity assembly, whereinthe bottom of the cylindrical shell with the cover is fixedly connected to the bottom plate, and the in-cavity assembly is arranged in a cavity formed by combining the cylindrical shell with the coverand the bottom plate. Three gaps are formed in the annular face of the cylindrical shell with the cover in the circumferential direction at intervals. The in-cavity assembly comprises a circuit part,and three outwards-protruding pins of the circuit part directly extend outwards from the corresponding gaps in the diameter direction. The in-cavity assembly also comprises metal pins which are inserted into the corresponding pins, and the bottom plate is provided with extension parts corresponding to the pins. An insulating pad is arranged between the metal pins and the extension parts. The bottom faces, corresponding to the three pins, of the metal pins are located on the same plane, and the bottom plate and the cylindrical shell with the cover are both made of metal materials. A connectingprotrusion protruding downwards is arranged at the lower end of the cylindrical shell with the cover, and a positioning groove is formed at the position, corresponding to the connecting protrusion, of the bottom plate, wherein the connecting protrusion is fixedly installed in the positioning groove through riveting.

Description

technical field [0001] The invention relates to the technical field of wireless communication equipment, in particular to an isolator / circulator and a manufacturing method thereof. Background technique [0002] In the existing wireless communication system, the transmitter is an important part, which is composed of power amplifier (PA), coupler, isolator / circulator, connector, duplexer and antenna, among which the coupler is used For the related monitoring function of the link, the isolator / circulator is used to protect the power amplifier tube, and the connector transmits the output signal to the duplexer. It is a similar design in the wireless field, but with the development of wireless communication, the requirements for miniaturization are getting higher and higher. As an anisotropic component, the isolator / circulator plays a very important role in the field of microwave and radio frequency communications. Through its unidirectional transmission characteristics, it can ...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the isolator / circulator includes a cylindrical shell with a cover and a bottom plate, and the cover of the cylindrical shell with a cover is mounted on the bottom plate, and an intracavity component is arranged in the inner cavity of the cylindrical shell with a cover. Including the circuit part, the three pins of the circuit part protrude outward, and respectively penetrate through the corresponding avoidance hole grooves on the outer ring surface of the cylindrical shell with a cover. The fixed bottom plate corresponding to the cylindrical shell with a cover must be a metal structure, and the bottom plate is fixed on the end surface of the circuit board. The bottom plate of the isolator / circulator is assembled to the cylindrical shell with a cover by screw locking or pressing in. , in the actual assembly process, due to the variation of the part size within the tolerance range, the tensile force between the bottom plate and the cylindrical shell with a cover is often not up to standard. Influence, manual adjustment is required, waste of manpower, inefficiency

Images