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Biasing for high linearity base-station pre-driver
Linköping University, Department of Electrical Engineering, Electronic Devices. Linköping University, The Institute of Technology.
2010 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

This thesis is a study on different methods to cancel out the nonlinearities of class A and AB power amplifiers (PA), using the proper biasing circuit design, or using analog pre distortion techniques.

In this thesis, the basic fundamentals, the nonlinearity sources in power amplifiers, and different biasing circuits for PAs and their effects on nonlinearity of PAs are investigated.

In addition, ordinary static and dynamic analog distorters in GaAs based PAs are reviewed. An investigation on static and dynamic analog distorters in silicon bipolar transistor based PAs are presented.

Some investigation on P1dB compression point, gain distortion and phase distortion, using single tone input signal are illustrated. Adjacent Chanel Power Ratio (ACPR1) and Alternate Channel Power Ratio (ACPR2) are also simulated using modulated input signal source.

Place, publisher, year, edition, pages
2010. , 60 p.
National Category
URN: urn:nbn:se:liu:diva-100221ISRN: LiTH-ISY-EX--10/4423--SEOAI: diva2:660858
Subject / course
Electronic Devices
2010-06-07, 10:00 (English)
Available from: 2013-11-08 Created: 2013-10-31 Last updated: 2013-11-08Bibliographically approved

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