Increasing performance of planar inductors used in broadband applications
US7126443B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2003 |
| Grant date | Oct 24, 2006 |
| Priority date | — |
| Expiry date | Sep 16, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2203/171
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Increasing performance of planar inductors used in broadband applications is described. In one implementation, an apparatus includes a high Quality factor (Q) value spiral planar inductor etched directly into a printed circuit board. A ferrite structure is attached to the printed circuit board and located in proximity to the high Q value spiral planar inductor. The ferrite structure increases the Q of spiral planar inductors, but without the inconvenience and expense of a wire wound terroidal inductors. Various shaped ferrite structures may be used in conjuction with the spiral planar inductors. Additionally, in certain implementations, the ferrite structures are configured to rotate about axis permitting the inductors to be tuned, even after components have been installed on a printed circuit board.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.