Frequency Domain Analysis for Nonlinear Electronic Circuits

摘要

The thesis deals with an extension of the harmonic balance method. It is done as one would build a circuit analysis program. First, a general overview of network topology is given which can be used to set up the linearized network equations. A view on the solution methods for linearized electrical networks is given. Nonlinear elements and the devices which are implemented in the program are discussed. A brief overview is given of solution methods of the nonlinear algebraic equations used in the direct current (DC) algorithm and in the frequency and time domain analysis. The integration procedure to be used for the solution of on the subject of nonlinear alternating current (AC) analysis. The usefulness of the described method is shown on the basis of come circuit examples. Finally, a special numerical integration method is developed and a method based on harmonic balance is described which is able to calculate the harmonic distortion in case of small signal analysis.