Circulator comprising a spring member between a ferrimagnetic piece and an adjacent conductor
US4209756A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 1977 |
| Grant date | Jun 24, 1980 |
| Priority date | — |
| Expiry date | Oct 28, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P1/387
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In a circulator comprising at least three ports, a pair of opposing conductors providing the ports, and a ferrimagnetic piece between the conductors, a gap appearing between the ferrimagnetic piece and the conductor or conductors is taken up by a spring member located in the gap. The conductors serve as an opposing pair of conductors of a waveguide of the circulator. Alternatively, the conductors serve as ground plates of a stripline with a center conductor disposed between the ground plates and with a pair of ferrimagnetic pieces disposed on both sides of the center conductor between the ground plates. In the latter case, a pair of spring members is preferably located between the ferrimagnetic pieces and the respective ground plates. Preferably, the spring member is made of phosphor bronze and comprises a plate in contact with the ferrimagnetic piece and legs extended from the plate towards the respective ports and brought into contact with the adjacent one of the opposing conductors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.