Frequency transposition method and device, in particular for the control of the transmission power of a cellular mobile telephone
US7738597B2 · kind B2 · utility
5Cited by
6References
5Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 8, 2005 |
| Grant date | Jun 15, 2010 |
| Priority date | — |
| Expiry date | Apr 17, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D7/165
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A frequency transposition device including an input terminal for receiving an incident signal SI and a modulator of the one-bit delta-sigma type MDU connected to the input terminal. A generator MGN provides a periodic auxiliary signal SAX with a frequency equal to a desired transposition frequency. A frequency transposer of the Gilbert cell type has a signal input BES connected to the output of the generator, a control input BCO connected to the output of the delta-sigma modulator MDU, and an output BS delivering a transposed signal STR.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.