Impedance matching in very high dielectric constant isolator/circulator junctions

摘要

Disclosed are embodiments of isolator/circulator junctions that can be used for radio-frequency (RF) applications, and methods of manufacturing the junctions. The junctions can have excellent impedance matching, even as they are being miniaturized, providing significant advantages over previously used junctions. The junctions can be formed of both high and low dielectric constant material.

主权项

1. A circulator/isolator junction comprising:
a pair of ferrite discs, each of the pair having an outer rim; a composite dielectric material surrounding the outer rim of each of the pair of ferrite discs; and a center conductor located between the pair of ferrite discs, the center conductor including a plurality of transmission lines extending away from the center of the center conductor, the composite dielectric material including segments having a first dielectric constant and segments having a second dielectric constant, the first dielectric constant segments being aligned over each of the plurality of transmission lines and having a dielectric constant lower than a dielectric constant of the second dielectric constant segments.