Oscillator
US7473478B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 30, 2005 |
| Grant date | Jan 6, 2009 |
| Priority date | — |
| Expiry date | Aug 2, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/325
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A compact oscillator in which the oscillation frequency can be adjusted to a desired value is provided. The oscillator includes: a magnetoresistive effect element comprising a pinned layer, a nonmagnetic spacer layer, and a free layer of which magnetization direction is changeable that are stacked in that order, a magnetization direction of the pinned layer being substantially fixed along a direction perpendicular to a stack direction; a bias magnetic field application unit for applying a bias magnetic field to the free layer in a direction that is perpendicular to the stack direction and is different from the magnetization direction of the pinned layer; and an adjusting magnetic field application unit for applying an adjusting magnetic field to the free layer in a direction that is perpendicular to the stack direction and is different from the direction of the bias magnetic field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.