Planar inductor devices
US8466769B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 14, 2011 |
| Grant date | Jun 18, 2013 |
| Priority date | — |
| Expiry date | Sep 2, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F2027/2814
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A multilayer inductor device includes a planar substrate, a ferrite body, and an outer and an inner conductive coil. The substrate includes plural dielectric layers with the ferrite body is disposed in the substrate. The outer and inner conductive coils are helically wrapped around the ferrite body. The outer conductive coil includes first upper conductors, first lower conductors, and first conductive vias vertically extending through the substrate and conductively coupled with the first upper and lower conductors. The inner conductive coil includes second upper conductors, second lower conductors, and second conductive vias vertically extending through the substrate and conductively coupled with the second upper and lower conductors. The inner conductive coil is disposed between the outer conductive coil and the ferrite body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.