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...
| Main Authors: | , , , |
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| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
IEEE
2010
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| Online Access: | http://psasir.upm.edu.my/id/eprint/45639/ 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 |
| _version_ | 1848850526067752960 |
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| author | Hashim, Shaiful Jahari Hashmi, Mohammad S. Benedikt, Johannes Tasker, Paul J. |
| author_facet | Hashim, Shaiful Jahari Hashmi, Mohammad S. Benedikt, Johannes Tasker, Paul J. |
| author_sort | Hashim, Shaiful Jahari |
| building | UPM Institutional Repository |
| collection | Online Access |
| 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. |
| first_indexed | 2025-11-15T10:07:41Z |
| format | Conference or Workshop Item |
| id | upm-45639 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T10:07:41Z |
| publishDate | 2010 |
| publisher | IEEE |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-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 |
| 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 |
| title | 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_short | 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 |
| url | http://psasir.upm.edu.my/id/eprint/45639/ http://psasir.upm.edu.my/id/eprint/45639/ 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 |