High dynamic range time-varying integrated receiver for elimination of off-chip filters
US7460844B2 · kind B2 · utility
34Cited by
5References
21Claims
0Family size
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Key dates
| Filing date | Jan 28, 2005 |
| Grant date | Dec 2, 2008 |
| Priority date | — |
| Expiry date | May 24, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D2200/0088
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A quadrature mixer with an LO input is provided. The quadrature mixer receives a signal having a frequency FLO and a signal input having a frequency FSIG, and has an output that comprises an output impedance that is high at frequencies of |FLO−FSIG | and |FLO+FSIG| and low at other. A mixer coupled to the output impedance interacts with the output impedance such that an impedance presented at the signal input is high for signals at FSIG if FSIG is a predetermined signal frequency, and low at other frequencies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.