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Transcript
Jordan University of Science and Technology
Analyzing nonlinear circuits using a modified harmonic balance method
Authors:
Zghoul, Fadi Nessir, and David Egolf
Abstract:
In recent years, the necessity for fast, accurate and less memory-intensive techniques to analyze nonlinear circuits
has grown as technology has advanced. The harmonic balance (HB) method is a powerful tool and it has been used
for some time in nonlinear circuit analysis. In order to keep up with the vast requirements of circuit design, the
harmonic balance method is modified to make it fast, more accurate and require less memory. In the modified
harmonic balance (MHB) method, circuits are analyzed by calculating voltages and currents of nonlinear components
in the time domain and those of linear components in the frequency domain. After that, an iteration scheme is
performed in which the voltage and current values have to be transformed from one domain to the other for each
single iteration. A key point to reduce the analysis time and minimize the memory required is to use an efficient way to
transform from one domain to another. One-dimensional Fourier transformations are used to convert from the time
domain to the frequency domain and visa versa. The current and voltage values are handled using a vector matrix for
each nonlinear element instead of using Jacobian matrices.