Patent · US Active

Receiver with analog and digital gain control, and respective method

US8428202B2 · kind B2 · utility

2Cited by

2References

14Claims

0Family size

Assignee

Thomson Licensing · FR

Inventors

Bogdan Braicu · Villingen-Schwenningen, DE
Heinrich Schemmann · Villingen-Schwenningen, DE

Key dates

Filing date	Jun 18, 2010
Grant date	Apr 23, 2013
Priority date	—
Expiry date	Apr 19, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH03G3/3068
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

The receiver comprises a first amplifier, a mixer for downconverting a wanted communications channel, a second amplifier, a demodulator and a digital controller providing a digital gain setting for the second amplifier by means a digital gain control after a selection of the wanted communications channel, and providing an analog gain setting for the first amplifier by means of an analog gain control during demodulation of the wanted communications channel. The digital gain setting is in particular freezed during demodulation of the wanted communications channel and the digital controller provides a re-calibration of the digital gain setting only, when the analog gain control is out of its control range. Applications are for example for direct conversion digital satellite receivers for reception of DVB-S, DVB-S2 or ABS-S television channels.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.