DocumentCode :
863410
Title :
A comprehensive analysis of IMD behavior in RF CMOS power amplifiers
Author :
Fager, Christian ; Pedro, José Carlos ; De Carvalho, Nuno Borges ; Zirath, Herbert ; Fortes, Fernando ; Rosário, Maria João
Author_Institution :
Dept. of Microtechnology & Nanoscience, Chalmers Univ. of Technol., Goteborg, Sweden
Volume :
39
Issue :
1
fYear :
2004
Firstpage :
24
Lastpage :
34
Abstract :
This paper presents a comprehensive analysis of nonlinear intermodulation distortion (IMD) behavior in RF CMOS power amplifiers (PAs). Separate analyses are presented for small- and large-signal operation regimes. Especially, a new, simple, large-signal behavioral IMD analysis method is presented that allows the mechanisms dominant for IMD generation to be identified and their individual contributions to be studied. By combining these analyses, typical IMD versus input power characteristics of MOSFET PAs can be predicted and understood for different classes of operation. Various measurements made on a 950-MHz RF CMOS PA are used to demonstrate typical behavior and validate the proposed theory. Prediction of IMD using a standard CMOS transistor model is also evaluated and is shown to give good agreement with the measurements.
Keywords :
CMOS analogue integrated circuits; UHF integrated circuits; UHF power amplifiers; intermodulation distortion; 950-MHz RF CMOS PA; IMD behavior; IMD generation; MOSFET PA; RF CMOS power amplifiers; comprehensive analysis; input power characteristics; large-signal behavioral IMD analysis method; large-signal operation; nonlinear intermodulation distortion; small-signal operation; standard CMOS transistor model; Intermodulation distortion; MOSFET circuits; Measurement standards; Power MOSFET; Power amplifiers; Predictive models; Radio frequency; Radiofrequency amplifiers; Radiofrequency identification; Semiconductor device modeling;
fLanguage :
English
Journal_Title :
Solid-State Circuits, IEEE Journal of
Publisher :
ieee
ISSN :
0018-9200
Type :
jour
DOI :
10.1109/JSSC.2003.820860
Filename :
1261285
Link To Document :
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