Mixer and frequency converting apparatus
US7991377B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2009 |
| Grant date | Aug 2, 2011 |
| Priority date | — |
| Expiry date | Apr 8, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D7/00
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A mixer includes: a magnetoresistive effect element including a fixed magnetic layer, a free magnetic layer, and a nonmagnetic spacer layer disposed between the fixed magnetic layer and the free magnetic layer; and a magnetic field applying unit that applies a magnetic field to the free magnetic layer. The mixer is operable, when a first high-frequency signal and a second high-frequency signal as a local signal are inputted, to multiply the first high-frequency signal and the second high-frequency signal using the magnetoresistive effect element and to generate a multiplication signal. A frequency converting apparatus includes the mixer and a filter operable, when a higher frequency and a lower frequency out of frequencies of the first high-frequency signal and the second high-frequency signal are expressed as f1 and f2 respectively, to pass one out of a frequency (f1+f2) and a frequency (f1−f2) out of the multiplication signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.