Title :
Variable gain control circuit for linear applications
Author_Institution :
Nokia Res. Center, Espoo, Finland
fDate :
9/28/2000 12:00:00 AM
Abstract :
A new, simple gain control circuit is introduced for linear applications. It utilises a differential stage for the gain control function and a predistortion circuit to maintain linearity. The circuit provides a wide dynamic range and low intermodulation levels. Suitable applications are WCDMA cellular phone circuits such as variable-gain amplifiers or driver stages with gain control for power amplifiers
Keywords :
bipolar analogue integrated circuits; cellular radio; code division multiple access; gain control; intermodulation; telephone sets; WCDMA cellular phone circuits; differential stage; driver stages; linear applications; linearity; low intermodulation levels; power amplifiers; predistortion circuit; variable gain control circuit; variable-gain amplifiers; wide dynamic range;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20001215
