Mixer
US7483684B2 · kind B2 · utility
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12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 25, 2006 |
| Grant date | Jan 27, 2009 |
| Priority date | — |
| Expiry date | Aug 11, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D2200/0033
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
To realize a mixer with a charge subsampling circuit with which a base band signal can be readily obtained without being affected by noise from wide bandwidth signals or undesired signals. A current generating circuit 8 outputs a current in proportion to the input signal voltage. In response to a control signal from the timing generating block 6, a charge subsampling circuit 7 samples the current at the same sampling frequency as the carrier frequency. In a charge-integrating process accompanying the sampling, weighting is carried out on terms in the transfer function of the FIR filter using a set of selected weights.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.