By Topic

Development of 5.8GHz SiGe BiCMOS direct conversion 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

4 Author(s)

We present the design, development and full characterization of two direct conversion receiver front-end architectures for IEEE802.11a application in IBM's SiGe BiCMOS technology. These approaches include: a) conventional 50/spl Omega/ system, b) fully monolithic front-end. The developed ICs are targeted for the upper U-NII band at frequency range of 5.725-5.825 GHz and include a low noise amplifier (LNA), two mixers in quadrature, and a frequency divider. All of these circuits use fully monolithic implementation. The LNA provides a gain of 11 dB, noise figure of 4.4dB, IIP3 of -2dBm and occupies an area of 0.7mm /spl times/ 0.7mm. A micromixer topology has been adopted in case of 50/spl Omega/ system and provides 9.2dB gain, input matching of 16dB, double sideband noise figure of 19.5 dB, input 1 dB compression point of -3 dBm, IIP3 and IIP2 of +6 and +32 dBm respectively, dynamic DC offset of 1.6mV, and occupies an area of 1.6mm /spl times/ 1mm. The fully integrated receiver utilizes single-ended Gilbert cell mixers, and occupies a compact area of 1.6mm /spl times/ 1.3mm. It exhibits 20.2dB gain, input 1 dB compression point (input P1dB) of -15.5 dBm, input matching of 15 dB, IIP3 and IIP2 of -3 dBm and +31 dBm respectively, double sideband noise figure of 7.1 dB, dynamic DC offset of 1mV, and LO to RF leakage of 78 dB. The LNA draws 5.78mA from a 2.8V supply, both micromixers draw 10.3mA from 3.1V supply, both Gilbert cell mixers draw 12.71mA from a 3.75V supply, and the frequency divider draws 22mA from 3.75V supply. Two different system architectures are chosen for an architectural trade-off of direct conversion receivers at 5.8GHz. To the best of our knowledge, this work presents the first report of SiGe BiCMOS direct conversion receiver front-ends and their architectural trade-offs for the IEEE802.11a standard at 5.8GHz.

Published in:

Microwave Symposium Digest, 2003 IEEE MTT-S International  (Volume:3 )

Date of Conference:

8-13 June 2003