Extracting frequency of an autonomous system by harmonic balance

Some considerations on initial partitioning the circuit within harmonic balance analysis are presented. Instead of linear and nonlinear, it is divided into resistive and reactive parts. Following the procedure presented, frequency as a parameter appears no more than once inside each equation, and most of the unknowns are expressed explicitly. The former is advantageous when examining an autonomous system, and the latter enables a simple numerical process. The method proposed is illustrated by an example.