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Measurement & Extra...
Measurement & Extraction of the Low-Frequency Dynamics of an Envelope Tracking Amplifier using Multisine Excitations
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- Bronders, Piet (author)
- Vrije Universiteit Brüssel (VUB),Vrije Universiteit Brussel (VUB)
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- Goos, Jan (author)
- Vrije Universiteit Brüssel (VUB),Vrije Universiteit Brussel (VUB)
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- Lataire, John (author)
- Vrije Universiteit Brüssel (VUB),Vrije Universiteit Brussel (VUB)
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- Rolain, Yves (author)
- Vrije Universiteit Brüssel (VUB),Vrije Universiteit Brussel (VUB)
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- Vandersteen, Gerd (author)
- Vrije Universiteit Brüssel (VUB),Vrije Universiteit Brussel (VUB)
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Pailloncy, Guillaume (author)
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- Gustafsson, Sebastian, 1990 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2018
- 2018
- English.
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In: IEEE MTT-S International Microwave Symposium Digest. - 0149-645X. ; 2018-June, s. 1039-1042
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Abstract
Subject headings
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- Both efficiency and linearity of an Envelope Tracking Power Amplifier depend on the tight synchronization between a Low- and High-Frequency path. The presence of reactive elements in this Low-Frequency path, as well as an inevitable delay difference between both paths, results in a dynamic mismatch that can seriously degrade the overall performance of the device. This work introduces a method that is able to extract these Low-Frequency dynamics without requiring access to any internal nodes of the device. The proposed extraction procedure makes use of the combination of a linear parameter-varying framework and a specific signal excitation strategy which uses a multisine excitation to mimic the operational conditions of the amplifier. A trustworthy model for the Low-Frequency dynamics is an important component necessary for building an adequate pre-distortion tool that is able to eliminate a bad dynamic match.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Reglerteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Control Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Signalbehandling (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Signal Processing (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Annan elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Other Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Keyword
- Envelope Shaping
- Digital Pre-Distortion
- Linear-Parameter Varying Model
- Envelope Tracking
Publication and Content Type
- kon (subject category)
- ref (subject category)
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