Edge-guided mode non-reciprocal circuit element for microwave energy
US4050038A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 2, 1975 |
| Grant date | Sep 20, 1977 |
| Priority date | — |
| Expiry date | Sep 2, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P1/38
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Isolators and asymmetrical circulators of the non-reciprocal type employing tapered conductors positioned upon a ferrimagnetic member wherein means are provided for creating a localized non-uniform D.C. magnetic field in the region of one edge of the tapered conductor and of a field strength sufficient to cause the ferrimagnetic slab to create a magnetic resonance condition within a predetermined frequency range. In one embodiment the non-uniform localized magnetic field is produced by a magnetic member positioned along said one edge. In another embodiment the magnetic member may be eliminated and the said one edge may be aligned with or extended beyond one edge of the ferrimagnetic slab to obtain the non-uniform magnetic field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.