Monolithic reciprocal latching ferrite phase shifter
US3982213A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 16, 1975 |
| Grant date | Sep 21, 1976 |
| Priority date | — |
| Expiry date | Apr 16, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P1/19
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A reciprocal latching ferrite phase shifter is fashioned from a single slab of ferrite material, such that the phase shifter comprises a monolithic ferrite structure, providing the overall functional characteristics of the phase shifter through an integrated combination of individual portions of the monolithic structure. The reciprocal function of the monolithic phase shifter assembly is provided through the use of dual non-reciprocal phase shifters connected in parallel, such that separate paths and selected phase shifts of zero to 360.degree. for linearly polarized transverse electric microwaves having operating frequencies in the range of two to 100 GHz, are provided for waves propagating in opposite directions. The non-reciprocal phase shifters are comprised of Faraday rotators having external electromagnetic windings in combination with reciprocal circular polarizers, with the residual magnetism characteristics of the ferrite Faraday rotator providing the latching characteristic, while magnetic circulators and quarter wave matching sections provide directional coupling and impedance matching for the linearly polarized wave in the connecting waveguides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.