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Behavioral modeling and linearization of a millimeter-wave power amplifier

Published online by Cambridge University Press:  12 May 2009

Ilan Melczarsky ,
Pere L. Gilabert ,
Valeria Di Giacomo ,
Eduard Bertran  and
Fabio Filicori
Ilan Melczarsky*
Affiliation:
Dipartimento di Ingegneria Elettronica (DEIS), University of Bologna, Viale Risorgimento 2, 40136 Bologna (BO), Italy. Phone: +39 0512093847; Fax: +39 0512093847; Emails: [email protected], [email protected]
Pere L. Gilabert
Affiliation:
Department of Signal Theory and Communications, Polytechnic University of Catalonia (UPC), Av. Canal Olímpic s/n, 08860 Castelldefels, Barcelona, Spain. Phone: +34 934137000; Fax: +34 934137032; Emails: [email protected], [email protected]
Valeria Di Giacomo
Affiliation:
Dipartimento di Ingegneria, Università di Ferrara, Via Saragat, 1, 44100 Ferrara (Fe), Italy. Phone: +39 05322093494; Fax: +39 0532974870; Email: [email protected]
Eduard Bertran
Affiliation:
Department of Signal Theory and Communications, Polytechnic University of Catalonia (UPC), Av. Canal Olímpic s/n, 08860 Castelldefels, Barcelona, Spain. Phone: +34 934137000; Fax: +34 934137032; Emails: [email protected], [email protected]
Fabio Filicori
Affiliation:
Dipartimento di Ingegneria, Università di Ferrara, Via Saragat, 1, 44100 Ferrara (Fe), Italy. Phone: +39 05322093494; Fax: +39 0532974870; Email: [email protected]
*
Corresponding author: I. Melczarsky Email: [email protected]
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Abstract

The use of digital predistortion for linearizing a millimeter-wave power amplifier (PA) is investigated. A PA operating at 38 GHz is designed using an accurate non-quasi-static transistor model, taking into account both short- and long-term memory effects. A realistic test signal is then used for the identification of a nonlinear auto-regressive moving average (NARMA) behavioral model of the PA. The NARMA-based digital predistorter is then derived and formulated in terms of basic predistortion cells, especially suitable for efficient implementation in an FPGA. The performance of the predistortion solution is preliminarily assessed by means of computer simulations.

Keywords

Behavioral modelingLinearizationMemory effectsMillimeter wavePower amplifierPredistortion
Type
Original Article
Information
International Journal of Microwave and Wireless Technologies , Volume 1 , Special Issue 2: TARGET , April 2009 , pp. 127 - 136
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2009

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References

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