Mixer circuit and method of operation
US8140044B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2007 |
| Grant date | Mar 20, 2012 |
| Priority date | — |
| Expiry date | Feb 21, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2207/583
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A mixer circuit to mix a RF (Radio Frequency) signal with a LO (Local Oscillator) signal to generate an IF (Intermediate Frequency) signal including a dummy branch connected in parallel of a mixing branch, the dummy branch including a transconductance stage having an input connected to a reference potential independent from the RF signal, to transform the reference potential into a current signal, and a current switching core to switch the current signal according to LO and signals, and chopping switches to connect in series the transconductance stage of the mixing branch to the current switching core of the mixing branch and, in the alternative, to the current switching core of the dummy branch under the control of a chopping signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.