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Analysis and design of class E power amplifier with nonlinear parasitic capacitance at any duty ratio
Author(s) -
Zhang Hao,
Ma Xikui,
Wong Siu Chung,
Tse Chi K.
Publication year - 2007
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.22312
Subject(s) - capacitance , amplifier , duty cycle , parasitic capacitance , nonlinear system , power (physics) , electronic engineering , class (philosophy) , electrical engineering , spice , engineering , microwave , computer science , physics , telecommunications , voltage , cmos , electrode , quantum mechanics , artificial intelligence
The nominal operating condition of Class E power amplifiers with parallel‐connected nonlinear parasitic capacitance and linear capacitance at any duty ratio has been studied in this article. Basic design equations are derived analytically. Using these equations, the component values for ensuring nominal operation at any given duty ratio can be conveniently found. Furthermore, the design equations highlight several important practical constraints, which help develop effective designs for improving the performance of practical Class E amplifiers. Finally, a design example is provided for verification. Both PSPICE simulation and experimental measurements are presented. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 920–923, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22312