Integrated circuit transformer with inductor-substrate isolation
US5969590A · kind A · utility
78Cited by
3References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 5, 1997 |
| Grant date | Oct 19, 1999 |
| Priority date | — |
| Expiry date | Aug 5, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F27/2804
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An integrated circuit transformer includes multiple metal layers in the structure of an integrated circuit in which are formed a first spiral inductor and a second spiral inductor. The first spiral inductor is aligned with and beneath the second spiral inductor such that the first spiral inductor acts to magnetically excite the second spiral inductor, while shielding it from resistance losses to the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.