Method and apparatus for fast-switching dual-toroid microwave phase shifter
US4445098A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 19, 1982 |
| Grant date | Apr 24, 1984 |
| Priority date | — |
| Expiry date | Feb 19, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P1/195
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention is for an apparatus and method of fast-switching a dual-toroid microwave ferrite phase shifter. A first circuit is provided for controllably switching the ferrite in one of the toroids between a saturated and partially saturated states. A second conduit is provided for controllably switching the ferrite in the other of the toroids between a saturated and partially saturated states. A control circuit is provided for controlling the first and second circuits such that the ferrite in at least one of the toroids is maintained in the saturated state at any given time such that any desired phase shift may be achieved with only one switching operation for each toroid. The present invention provides new reference states such that there are two reciprocal phase states for any given phase state such that a reciprocal phase state may always be achieved with only one switching operation for each toroid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.