On estimating the stability of linear parametric circuits during frequency symbol analysis

In the article the possibility of estimating asymptotic stability of linear parametric circuits during frequency symbolic analysis and approximation of the circuit’s transfer function by truncated Fourier series is considered. Estimate of asymptotic stability is conducted on the basis of normal, not the bi-frequency, transfer function as in the usual case. An example of estimating asymptotic stability of a single-contour parametric amplifier is provided.