Ferrite circulators and isolators and circuits incorporating the same
US4034377A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 17, 1976 |
| Grant date | Jul 5, 1977 |
| Priority date | — |
| Expiry date | Feb 17, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P1/383
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A ferrite circulator for use in the frequency range 1 GHz to 1,000 GHz, wherein a ferrite cylinder is disposed in a junction of three equiangularly arranged high permittivity dielectric waveguides that are adjacent to a conductive image plane with a plastic film therebetween and a magnet establishing magnetic field in the ferrite cylinder normal to the image plane; also disclosed is a ferrite isolator for use in the frequency range from 1 GHz to 1,000 GHz including a ferrite slab disposed adjacent to one side of a high permittivity dielectric waveguide disposed adjacent to a conductive image plane with a plastic film therebetween, a resistance film disposed adjacent to a conductive image plane, a resistance film disposed adjacent to the ferrite slab, and a magnet for establishing a magnetic field in the waveguide and the ferrite slab disposed normal to the image plane; there further are disclosed switches, modulators, phase shifters and transceivers incorporating such ferrite circulators and isolators.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.