A Classification and Comparative Overview of State-of-the-Art Analog Linearization Techniques for Integrated CMOS Power Amplifiers

Zohny A, Rascher J, Fischer G, Weigel R, Ußmüller T (2012)

Publication Type: Conference contribution

Publication year: 2012

Publisher: IEEE

Conference Proceedings Title: IEEE International Conference on Wireless Information Technology and Systems - ICWITS 2012

Event location: Hawaii, USA

DOI: 10.1109/ICWITS.2012.6417770

Abstract

In order to conform to the latest mobile communication standards, highly-linear power amplifiers (PA) are required. This is a challenge since high power added efficiency (PAE) is also needed for long battery life which dictates operating close to saturation where amplitude and phase nonlinearities are dominant. Thus linearization is necessary to simultaneously improve average efficiency and linearity [1]. Traditional linearization techniques such as feedback and feedforward suffer from bandwidth limitations and efficiency degradation respectively. Furthermore, digital predistortion (DPD) techniques are integrable albeit suffering from high system complexity [2]. State-of-the-art analog linearization techniques however solve many of these problems. The aim of this paper is to propose a classification of these techniques as shown in section II. In addition, section III shows a comparative overview of these techniques. Utilizing that classification and comparative study, the proper deep submicron (DSM) CMOS on-chip linearization techniques for handsets are then identified for modern communication standards.

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How to cite

APA:

Zohny, A., Rascher, J., Fischer, G., Weigel, R., & Ußmüller, T. (2012). A Classification and Comparative Overview of State-of-the-Art Analog Linearization Techniques for Integrated CMOS Power Amplifiers. In IEEE International Conference on Wireless Information Technology and Systems - ICWITS 2012. Hawaii, USA: IEEE.

MLA:

Zohny, Amr, et al. "A Classification and Comparative Overview of State-of-the-Art Analog Linearization Techniques for Integrated CMOS Power Amplifiers." Proceedings of the IEEE International Conference on Wireless Information Technology and Systems - ICWITS 2012, Hawaii, USA IEEE, 2012.

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