By Topic

A 60-dB 246-MHz CMOS variable gain amplifier for subsampling GSM receivers

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
M. A. I. Mostafa ; Micro Linear Corp., San Jose, CA, USA ; S. H. K. Embabi ; M. Elmala

A variable gain amplifier (VGA) is designed for a GSM subsampling receiver. The VGA is implemented in a 0.35-/spl mu/m CMOS process and approximately occupies 0.64 mm/sup 2/. It operates at an IF frequency of 246 MHz. The VGA provides a 60-dB digitally controlled gain range in 2-dB steps. The overall gain accuracy is less than 0.3 dB. The current is 9 mA at 3 V supply. The noise figure at maximum gain is 8.7 dB. The IIP3 is -4 dBm at minimum gain, while the OIP3 is -1 dBm at maximum gain. The group delay is 1.5 ns across 5-MHz bandwidth.

Published in:

IEEE Transactions on Very Large Scale Integration (VLSI) Systems  (Volume:11 ,  Issue: 5 )