MICROSTRIP FERRITE UHF ISOLATOR Russian patent published in 2022 - IPC H01P1/38 

FIELD: radio equipment.

SUBSTANCE: microstrip ferrite UHF isolator comprises a ferrite substrate with a metal layer on the back side; three microstrip transmission lines are located on the front side thereof: a first, a second, and a third one, arranged symmetrically relative to each other; a load made of an absorbing material; at least one matching element; wherein some ends of the first, second, and third microstrip transmission lines have branches interconnected in the shape of a disk — a branching disk of a set diameter, and other ends thereof are passed along the edge of the ferrite substrate; the other ends of the first and second microstrip transmission lines are the input and the output of the UHF isolator, respectively, and the other end of the third microstrip transmission line is connected with the load made of an absorbing material, providing a distributed load function, a magnetic system for magnetising the ferrite substrate. The magnetic system constitutes a substrate made of industrial iron, fully covered with a nickel layer with a thickness of 4.0÷12.0 mcm, proportional to the ferrite substrate, and a fourth magnetisation group magnet with a diameter proportional to the diameter of the branching disk and a height of 1.5 mm or more, wherein the ferrite substrate is located with the back side thereof on the substrate made of industrial iron, the magnet is located on the branching disk, and the substrate and the magnet are accordingly interconnected.

EFFECT: expanded working frequency range.

1 cl, 2 dwg, 1 tbl