A. Brambilla et D. Damore, A FILTER-BASED TECHNIQUE FOR THE HARMONIC-BALANCE METHOD, IEEE transactions on circuits and systems. 1, Fundamental theory andapplications, 43(2), 1996, pp. 92-98
The Harmonic Balance Method (HEM) allows an efficient determination of
the steady-state solution of mildly nonlinear circuits; however, in t
he presence of strong nonlinearities, it often fails to converge. The
reasons of such behavior are investigated in this paper, In order to i
mprove convergence, a modified HBM technique is presented, based upon
the idea of filtering used in sampled data systems, This technique has
been successfully employed in the simulation of strongly nonlinear ci
rcuits, such as periodically switched circuits. Results are reported t
ogether with the details of the method.