Symmetric differential inductor structure
US8305182B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2011 |
| Grant date | Nov 6, 2012 |
| Priority date | — |
| Expiry date | Sep 23, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/0002
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A symmetric differential inductor structure includes first, second, third and fourth spiral conductive wirings disposed in four quadrants of a substrate, respectively. Further, a fifth conductive wiring connects the first and fourth spiral conductive wirings, and a sixth conductive wiring connects the second and third spiral conductive wirings. The first and second spiral conductive wirings are symmetric but not intersected with one another, and the third and fourth spiral conductive wirings are symmetric but not intersected with one another. Therefore, the invention attains full geometric symmetry to avoid using conductive wirings that occupy a large area of the substrate as in the prior art and to thereby increase the product profit and yield.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.