PublisherIEEE Press. Institute of Electrical and Electronics Engineers
Rights accessOpen Access
Nonlinear switched circuits are usually analyzed in
the time domain. The use of frequency-domain methods to
analyze the steady-state of switched circuits is usually restricted
to linear circuits and, although Volterra series approaches are
applied to the distortion of nonlinear switched circuits, the use
of harmonic balance (HB) methods in nonlinear switched
circuits seems to be marginal if not discarded. In this paper, we
analyze the nonlinear class-E amplifier with an ideal switch by
means of the HB method. We show how the switching function
may be carefully chosen to improve the accuracy of the solution.
When the circuit achieves actual class-E operation, the method
converges better and is more accurate than classical timedomain
methods. We conclude that the HB method is an
alternative to time-domain methods that can be used to analyze
the class-E amplifier in its expected operation mode.
CitationBonet, J. [et al.]. The nonlinear class-E amplifier: a case study of harmonic balance applied to switched circuits. A: IEEE International Symposium on Circuits and Systems. "2009 IEEE International Symposium on Circuits and Systems". Taipei: IEEE, 2009, p. 1883-1886.
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