Analysis and Design of Wideband Low Noise Amplifier with Digital Control
Loading...
Date
2010-12
ORCID
Advisor
Referee
Mark
Journal Title
Journal ISSN
Volume Title
Publisher
Společnost pro radioelektronické inženýrství
Abstract
The design issues in designing low noise amplifier (LNA) for Software-Defined-Radio (SDR) are reviewed. An inductor-less wideband low noise amplifier aiming at low frequency band (0.2-2GHz) for Software-Defined-Radio is presented. Shunt-shunt LNA with active feedback is used as the first stage which is carefully optimized for low noise and wide band applications. A digitally controlled second stage is employed to provide an additional 12dB gain control. A novel method is proposed to bypass the first stage without degrading input matching. This LNA is fabricated in a standard 0.18 um CMOS technology. The measurement result shows the proposed LNA has a gain range of 6dB-18dB at high gain mode and -12dB-0dB at low gain mode, as well as a –3dB bandwidth of 2GHz. The noise figure (NF) is 3.5-4.5dB in the high gain setting mode. It consumes 20mW from a 1.8V supply.
Description
Citation
Radioengineering. 2010, vol. 19, č. 4, s. 527-535. ISSN 1210-2512
http://www.radioeng.cz/fulltexts/2010/10_04_527_535.pdf
http://www.radioeng.cz/fulltexts/2010/10_04_527_535.pdf
Document type
Peer-reviewed
Document version
Published version
Date of access to the full text
Language of document
en