Electrically tunable inductor
US8723368B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 5, 2011 |
| Grant date | May 13, 2014 |
| Priority date | — |
| Expiry date | Dec 27, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F21/08
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An electrically tunable inductor with an equivalent inductance includes a main winding and a tuning winding magnetically coupled to the main winding. The current through the tuning winding is controlled to adjust the equivalent inductance of the electrically tunable inductor. A device may include an electrically tunable inductor. A system may include multiple devices, one or more of the devices including an electrically tunable inductor. A tuning controller within the system may control the current in tuning windings of one or more of the multiple devices in the system. When an electrically tunable inductor is part of a resonant circuit, the resonant frequency may be controlled by adjusting the equivalent inductance of the electrically tunable inductor through controlling the current in the tuning winding. Controlling the current in the tuning winding includes one or more of controlling the peak, direction, frequency, duty cycle, or phase of the current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.