A Two-Port Nonlinear Dynamic Behavioral Model of RF PAs Subject to Wideband Load Modulation

G.P. Gibiino , Konstanty Łukasik , Paweł Barmuta , Alberto Santarelli , Dominique M. M.-P. Schreurs , Fabio Filicori


This work presents a full two-port, i.e., double input-double output, behavioral modeling approach suitable for radio frequency power amplifiers (PAs) in the presence of dynamic load modulation (DLM). The formulation of the model, based on a first-order approximation of a modified Volterra series, accounts for the nonlinear distortion determined by large-signal operation under mismatched conditions, and also for the memory effects stimulated by a modulated PA input signal, or by the dynamic variations of the PA load. By following an exhaustive procedure defined in the frequency domain, the model of a general purpose commercial PA is extracted over 160 MHz of modulation bandwidth (BW) with nonlinear vector network analyzer measurements. Validation results under 20-MHz BW multisine excitation and injected 80-MHz BW multisine load modulation show improved prediction capabilities with respect to quasi-static or single-input descriptions, allowing for reliable system-level simulations in the presence of DLM.
Author G.P. Gibiino - [Alma Mater Studiorum Universita di Bologna]
G.P. Gibiino,,
, Konstanty Łukasik (FEIT / PE)
Konstanty Łukasik,,
- The Institute of Electronic Systems
, Paweł Barmuta (FEIT / PE)
Paweł Barmuta,,
- The Institute of Electronic Systems
, Alberto Santarelli - [Alma Mater Studiorum Universita di Bologna]
Alberto Santarelli,,
, Dominique M. M.-P. Schreurs
Dominique M. M.-P. Schreurs,,
, Fabio Filicori - [Alma Mater Studiorum Universita di Bologna]
Fabio Filicori,,
Journal seriesIEEE Transactions on Microwave Theory and Techniques, ISSN 0018-9480
Issue year2018
Publication size in sheets0.65
Keywords in EnglishBehavioral modeling, large-signal measurements, load modulation, memory effects, power amplifiers (PAs)
ASJC Classification2208 Electrical and Electronic Engineering; 3104 Condensed Matter Physics; 3108 Radiation
URL http://ieeexplore.ieee.org/document/8080311/
ProjectResearch on measurement, circuit and signal theory and electronic circuits and systems. Project leader: Starecki Tomasz, , Phone: +48 22 234 7744; +48 22 234 3657, start date 05-06-2017, end date 31-10-2018, ISE/2017/DS, Completed
WEiTI Działalność statutowa
Languageen angielski
Score (nominal)35
Score sourcejournalList
ScoreMinisterial score = 35.0, 17-06-2020, ArticleFromJournal
Publication indicators Scopus Citations = 2; WoS Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2018 = 2.138; WoS Impact Factor: 2018 = 3.756 (2) - 2018=3.864 (5)
Citation count*1 (2019-05-15)
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