Multi-joint broadband isolator

Abstract

The invention discloses a multi-joint broadband isolator. The multi-joint broadband isolator comprises a lower cover plate, screws, metal plates, permanent magnets, a cavity, dielectric rings, gyromagnetic ferrites, dielectric blocks, loads, an inner conductor and an upper cover plate, wherein the lower cover plate is fixedly connected with the cavity through the screws; the metal plates and the permanent magnets are mounted inside cylindrical grooves in the bottom of the cavity; the permanent magnets are placed inside grooves of the metal plates; the dielectric rings overlapped in double layers are embedded into circular cavities formed in the top of the cavity; the gyromagnetic ferrites are placed between the dielectric rings; the inner conductor is clamped between the gyromagnetic ferrites overlapped in upper and lower layers; two of leads of the inner conductor are introduced outside the cavity to be fixedly mounted through the dielectric blocks, and the other leads of the inner conductor are clamped between the loads of two absorbers; and the top of the cavity is fixedly connected to the upper cover plate through the screws. The multi-joint broadband isolator disclosed by theinvention is simple in structure, small in volume, light in weight, high in isolation, high in working stability at an ultimate temperature and high in magnetic disturbance resistance.

Description

technical field [0001] The invention relates to the technical field of isolators, in particular to a multi-section broadband isolator. Background technique [0002] The design concept of an ideal three-terminal junction circulator is based on the theory of the scattering matrix, which establishes the relationship between the incident and reflected waves of the junction. The three-terminal junction circulator consists of a ferrite-loaded central region and three transmission lines coupled to it. By changing the size of the ferrite, the saturation magnetic moment, the dielectric constant, the external constant magnetic field and the shape of the central conductor size, thereby changing the eigenvalues ​​of the scattering matrix to form a circulator. For an ideal three-terminal circulator, the electromagnetic wave input to port 1 can only be output from port 2, the electromagnetic wave input to port 2 can only be output from port 3, and the electromagnetic wave input to port 3...

AI Technical Summary

Problems solved by technology

This structure consumes a lot of processing materials, the working magnetic field is low, the magnetic circuit is not completely closed, the magnetic flux leakage is large, the efficiency of the magnetic circuit is low, and it is difficult to miniaturize the structure.

Images