ISSN 0869-6632 (Print)
ISSN 2542-1905 (Online)

Autooscillator operation at the load

Parametric instability of autooscillator coupled with remote load. II. Numerical simulation

At the autooscillator with small reflection from the remote load the mode stability relative to decay into two side satellites was studied by numerical simulation of characteristic equation. At arbitrary exceed over oscillation threshold the stability regions was founded in the space of system parameters. The results are in a good agree, from the one hand, with theory in the parameter space where characteristic equation can be solved analytically, from the other hand, with the results of numerical simulation of transient processes between modes.

Parametric instability of autooscillator coupled with remote load. I. Theory

At the autooscillator with weakly reflected remote load the number of one-frequency states – longitudinal modes – increases with the growth of the reflection coefficient and the length of the delay line. A mode of this kind can be unstable in some parameter regions. There can be two types of perturbations: a) the perturbations resulting in a slow evolution of principal mode amplitude and frequency; b) the perturbations in the form of two satellites which frequencies are symmetric from that of the principal mode.