Phase shifter
US3946340A · kind A · utility
6Cited by
3References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 18, 1974 |
| Grant date | Mar 23, 1976 |
| Priority date | — |
| Expiry date | Mar 18, 1994 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P1/195
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A latching ferrite phase shifter having a ferrite toroid is provided with inexpensive means for adjusting its magnetization to account for manufacturing inaccuracies and temperature changes. A small permanent magnet is mounted externally of the transmission line in which the ferrite is positioned. The permanent magnet applies parallel fields to the opposite sides of the toroid, selectively reducing magnetic flux density on one side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.