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Theoretical facet and experimental results of harmonic tuned PAs
Author(s) -
Colantonio Paolo,
Giannini Franco,
Leuzzi Giorgio,
Limiti Ernesto
Publication year - 2003
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.10106
Subject(s) - amplifier , harmonic , rf power amplifier , electronic engineering , power (physics) , harmonic balance , load pull , computer science , facet (psychology) , electrical engineering , engineering , nonlinear system , physics , acoustics , psychology , social psychology , personality , big five personality traits , cmos , quantum mechanics
High‐efficiency power amplifier design criteria imply a synthesis of input and output networks with particular emphasis on their harmonic behavior. In this article, a simplified approach to clarify the relevance of such terminations is presented. Starting from the implications of power balance for stage performance, design criteria to improve the efficiency of high‐frequency applications are presented. In order to validate the approach, comparisons among the performances of single‐stage amplifiers, all operated at 5 GHz under a sinusoidal driving signal and synthesized by utilizing different design methodologies, are presented. Drain efficiencies at 1‐dB compression of 44.5%, 53.3%, and 61.56% have been measured respectively for the tuned load and harmonically manipulated (2 nd and 2 nd & 3 rd ) realized amplifiers, compared with a simulated drain efficiency of 55% using the Class E approach. © 2003 Wiley Periodicals, Inc. Int J RF and Microwave CAE 13: 459–472, 2003.