Patent · US Expired

Gain control in wireless LAN devices

US7158590B2 · kind B2 · utility

0Cited by

13References

39Claims

0Family size

Assignee

Advanced Micro Devices, Inc. · US

Inventors

Wolfram Kluge · Dresden, DE
Jörg Borowski · Dresden, DE
Frank Poegel · Dresden, DE

Key dates

Filing date	Jun 27, 2002
Grant date	Jan 2, 2007
Priority date	—
Expiry date	Jul 9, 2024

Classification

Technology area (CPC H)Electricity
CPC primaryH03G3/3089
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

A signal pre-processing device particularly in wireless LAN devices is provided that comprises an AGC (Automatic Gain Control) unit, an ADC (Analog-to-Digital Converting) unit and a normalization unit. The AGC unit amplifies a received analog input signal and outputs an amplified analog signal. Further, it automatically controls an amplification gain when amplifying the analog input signal. The ADC unit receives the amplified analog signal, converts it into a digital signal and outputs the digital signal. The normalization unit is receives the digital signal, applies a normalization function to the digital signal and outputs the normalized digital signal. Thus, less precise AGC units can be used, thereby reducing production costs as well as the size and complexity of the AGC unit. Further, shorter circuit development times are obtainable.

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