Quadrature signal generator for tuning phases of all of four generated quadrature signals
US7397317B2 · kind B2 · utility
3Cited by
4References
9Claims
0Family size
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Key dates
| Filing date | Feb 1, 2006 |
| Grant date | Jul 8, 2008 |
| Priority date | — |
| Expiry date | Mar 26, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2007/0192
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A quadrature signal generator capable of phase-tuning with respect to all of four generated quadrature signals. The quadrature signal generator includes four phase tuning units each having two input terminals, one receiving a differential signal, the other being grounded, and changing a phase of the differential signal to thereby generate quadrature signals. Accordingly, it is possible to tune phases of all the four generated quadrature signals. It is also possible to prevent the amplitude of quadrature signals from being deviated from a reference value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.