Novel surface mount-type microwave isolator

Abstract

The invention relates to a surface mount-type microwave isolator, wherein a casing thereof is formed with a half-opened cylindrical cavity body and is provided with a port at the sidewall thereof, a lug boss which is provided with a through hole is arranged at the position, opposite to the port, on the sidewall of the casing; the half-opened cylindrical cavity body of the casing is internally provided with a permanent magnet, a uniform magnet conducting chip, a ferrite, a central conductor and a temperature compensation plate, and is also covered by a cover board, the central conductor passes through the port on the sidewall of the casing to stretch out of the cavity body; a port pin insulator is installed in the through hole of the lug boss at the sidewall of the casing, and a port pin is installed in the port pin insulator and is electrically connected with the central conductor. Due to the tight fit between the port pin insulator and the through hole of the lug boss as well as between the port pin and the port pin insulator, the central conductor is welded with the port pin so that the size and the position of the port pin are quite firm and stable, thereby obviously enhancing the reliability of the isolator on the basis of not changing the performance of devices, in addition, the surface mount-type microwave isolator is easy for large-scale production.

Description

Technical field [0001] The invention relates to a novel surface mount microwave isolator, which belongs to the technical field of wireless communication. Background technique [0002] At present, the surface mount microwave isolators produced at home and abroad generally adopt the "gull wing" form of input and output pins, and the structure is formed by extending the "Y"-shaped arm of the center conductor and bending it in the "L" shape. Although the input and output ports of this type are simple, the thickness of the center conductor is usually 0.127~0.254 mm, and the strength is very poor. The total length of the pins is between 7~10 mm, and the size and shape are easy to change during production and transportation. This not only affects the debugged working performance, but also causes defects such as misalignment, false soldering, failure of soldering on the surface of the end-user product production line, and poor soldering of the shell and the circuit board. In order to ke...

AI Technical Summary

Problems solved by technology

Although the input and output ports of this type are simple, the thickness of the central conductor is usually 0.127-0.254 mm, and the strength is very poor, while the total length of the pins is between 7-10 mm, and the size and shape are easy to change during production and transportation. , which not only affects the debugged working performance, but also causes defects such as dislocation of the surface isolator on the production line of the end user's product, virtual welding, welding failure, poor welding of the shell and the circuit board, etc.

In order to keep the size and shape of the port from deformation, special forming jigs and cutting jigs are required in production, resulting in low production efficiency, and special packaging boxes are required during transportation to increase costs

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