Analog-digital conversion system comprising a double automatic gain control loop
US8514122B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 2012 |
| Grant date | Aug 20, 2013 |
| Priority date | — |
| Expiry date | Apr 13, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/185
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An analog-digital conversion system comprising at least one variable gain amplifier amplifying an input signal e, an analog-digital converter CAN digitizing said signal e, an interference-suppressing digital processing module, processing the digitized signal, also comprises a first automatic gain control AGC loop, called the analog AGC loop, that compares an estimate of the output power of the CAN converter with a control setpoint g1 called the control setpoint of the analog AGC loop, a gain ga used to control the variable gain amplifier being deduced from this comparison. The system also comprises a second automatic gain control AGC loop called the digital loop, said digital loop comparing an estimate of the power after the interference-suppressing digital processing with a predetermined control setpoint gn, the analog AGC loop being controlled by a control setpoint deduced from this comparison.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.