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Effect of impedance variation around the fundamentals on PA distortions characteristics under wideband multi-tone stimulus

Characterisation of modern wireless power transistors and amplifies requires wideband-modulated stimuli for realistic performance evaluation. Normally power transistor performance is evaluated using passive load-pull techniques. However, these have some physical realization constraints that influenc...

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Main Authors: Hashim, Shaiful Jahari, Hashmi, Mohammad S., Benedikt, Johannes, Tasker, Paul J.
Format: Conference or Workshop Item
Language:English
Published: IEEE 2010
Online Access:http://psasir.upm.edu.my/id/eprint/45639/1/Effect%20of%20impedance%20variation%20around%20the%20fundamentals%20on%20PA%20distortions%20characteristics%20under%20wideband%20multi-tone%20stimulus.pdf
http://psasir.upm.edu.my/id/eprint/45639/
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spelling my.upm.eprints.456392020-08-07T02:27:43Z http://psasir.upm.edu.my/id/eprint/45639/ Effect of impedance variation around the fundamentals on PA distortions characteristics under wideband multi-tone stimulus Hashim, Shaiful Jahari Hashmi, Mohammad S. Benedikt, Johannes Tasker, Paul J. Characterisation of modern wireless power transistors and amplifies requires wideband-modulated stimuli for realistic performance evaluation. Normally power transistor performance is evaluated using passive load-pull techniques. However, these have some physical realization constraints that influence the amplitude and the phase of the presented impedance at the DUT plane as across the modulated bandwidth. The problem becomes more apparent as modulation bandwidth is increased beyond few MHz. It has been shown recently that a digitally controlled active envelop load-pull (ELP) system can completely address this problem [1], thus allowing for a more systematic investigation of the parameters that may affect the performance of power transistors under wideband-modulated stimuli. In this paper, non ideal multi-tone impedance conditions are purposely introduced for demonstrating their effects on power amplifier performance in order to illustrate the DUT sensitivity to measurement system imperfections at higher modulation bandwidths in excess of few MHz. IEEE 2010 Conference or Workshop Item PeerReviewed text en http://psasir.upm.edu.my/id/eprint/45639/1/Effect%20of%20impedance%20variation%20around%20the%20fundamentals%20on%20PA%20distortions%20characteristics%20under%20wideband%20multi-tone%20stimulus.pdf Hashim, Shaiful Jahari and Hashmi, Mohammad S. and Benedikt, Johannes and Tasker, Paul J. (2010) Effect of impedance variation around the fundamentals on PA distortions characteristics under wideband multi-tone stimulus. In: 2010 Asia Pacific Conference on Circuit and System (APCCAS 2010), 6-9 Dec. 2010, Kuala Lumpur, Malaysia. (pp. 1115-1118). 10.1109/APCCAS.2010.5775081
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description Characterisation of modern wireless power transistors and amplifies requires wideband-modulated stimuli for realistic performance evaluation. Normally power transistor performance is evaluated using passive load-pull techniques. However, these have some physical realization constraints that influence the amplitude and the phase of the presented impedance at the DUT plane as across the modulated bandwidth. The problem becomes more apparent as modulation bandwidth is increased beyond few MHz. It has been shown recently that a digitally controlled active envelop load-pull (ELP) system can completely address this problem [1], thus allowing for a more systematic investigation of the parameters that may affect the performance of power transistors under wideband-modulated stimuli. In this paper, non ideal multi-tone impedance conditions are purposely introduced for demonstrating their effects on power amplifier performance in order to illustrate the DUT sensitivity to measurement system imperfections at higher modulation bandwidths in excess of few MHz.
format Conference or Workshop Item
author Hashim, Shaiful Jahari
Hashmi, Mohammad S.
Benedikt, Johannes
Tasker, Paul J.
spellingShingle Hashim, Shaiful Jahari
Hashmi, Mohammad S.
Benedikt, Johannes
Tasker, Paul J.
Effect of impedance variation around the fundamentals on PA distortions characteristics under wideband multi-tone stimulus
author_facet Hashim, Shaiful Jahari
Hashmi, Mohammad S.
Benedikt, Johannes
Tasker, Paul J.
author_sort Hashim, Shaiful Jahari
title Effect of impedance variation around the fundamentals on PA distortions characteristics under wideband multi-tone stimulus
title_short Effect of impedance variation around the fundamentals on PA distortions characteristics under wideband multi-tone stimulus
title_full Effect of impedance variation around the fundamentals on PA distortions characteristics under wideband multi-tone stimulus
title_fullStr Effect of impedance variation around the fundamentals on PA distortions characteristics under wideband multi-tone stimulus
title_full_unstemmed Effect of impedance variation around the fundamentals on PA distortions characteristics under wideband multi-tone stimulus
title_sort effect of impedance variation around the fundamentals on pa distortions characteristics under wideband multi-tone stimulus
publisher IEEE
publishDate 2010
url http://psasir.upm.edu.my/id/eprint/45639/1/Effect%20of%20impedance%20variation%20around%20the%20fundamentals%20on%20PA%20distortions%20characteristics%20under%20wideband%20multi-tone%20stimulus.pdf
http://psasir.upm.edu.my/id/eprint/45639/
_version_ 1675328736108478464
score 13.211869

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