Title :
High-dynamic-range variable gain amplifier with temperature compensation and linear-in-decibel gain control
Author :
Carrara, F. ; Filoramo, P. ; Palmisano, G.
Author_Institution :
Dipt. di Ingegneria Elettrica Elettronica e dei Sistemi, Univ. di Catania, Italy
fDate :
3/18/2004 12:00:00 AM
Abstract :
A novel intermediate-frequency variable-gain amplifier for wideband code-division multiple access transmitters is presented. The circuit includes a compensation technique for parasitic coupling, which allows a high dynamic range of 85 dB to be attained while using a single variable-gain stage. Temperature compensation and decibel-linear characteristic are achieved by means of a control circuit providing a lower than ±1.5 dB gain error over full temperature and gain ranges.
Keywords :
code division multiple access; compensation; gain control; intermediate-frequency amplifiers; radio transmitters; WCDMA; compensation technique; decibel-linear characteristics; dynamic range; high dynamic range variable gain amplifier; intermediate-frequency variable-gain amplifier; linear-in-decibel gain control; parasitic coupling; single variable-gain stage; temperature compensation; wideband code-division multiple access transmitters;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20040247
