Dynamically patterned shielded high-Q inductor
US6833603B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 11, 2003 |
| Grant date | Dec 21, 2004 |
| Priority date | — |
| Expiry date | Aug 11, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/3011
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
High quality factor (Q) inductor elements with dynamically driven, conductive, patterned shields are disclosed wherein a conductive, patterned shield structure/layer is provided between the inductor element and the substrate. The patterned shield is dynamically driven to the same electrical potential as the inductor element, to reduce or eliminate parasitic capacitive coupling between the inductor element and the conductive substrate. The patterned shield is patterned to form a plurality of conductive segments which are insulated from each other such that eddy currents cannot flow from one conductive segment to an adjacent conductive segment, to prevent the flow of eddy currents in the patterned shield when it is dynamically driven to the same electrical potential as the inductor element. The conductive segments of the patterned shield are electrically connected together at a central connecting point to allow the patterned shield to be dynamically driven to the same electrical potential as the inductor element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.