Efficient reduction of local oscillator leakage
US8744385B2 · kind B2 · utility
7Cited by
9References
39Claims
0Family size
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Key dates
| Filing date | Sep 1, 2009 |
| Grant date | Jun 3, 2014 |
| Priority date | — |
| Expiry date | Aug 18, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D2200/009
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A frequency conversion system includes a mixer, which is coupled to mix an input signal with a Local Oscillator (LO) signal, so as to produce an output signal. Control circuitry is configured to adjust an actual level of the LO signal provided to the mixer, so as to maintain the actual level substantially constant. A nulling signal generator is coupled to inject a nulling signal into the input signal prior to mixing with the LO signal adjusted by the control circuitry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.