Transformer for varying inductance value
US7372352B2 · kind B2 · utility
7Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 26, 2005 |
| Grant date | May 13, 2008 |
| Priority date | — |
| Expiry date | Nov 10, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/0002
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
There is provided a transformer for varying an inductance value, which adjusts a tuning range of the inductance without decrease of the inductor's capability by selectively connecting switches to inductors and controls an amount of magnetic flux. And the transformer consists of multiple inductors formed on a semiconductor substrate, which including N number of metal lines, N number of ports made by twisting the metal lines in the form of a symmetric circuit, wherein a certain number of ports among the N number of ports, which are connected to switch elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.