BIFURCATION OF AUTOOSCILLATIONS IN AN LCR AUTOOSCILLATOR WITH DISTRIBUTED PARAMETERS OF THE FEEDBACK CHANNEL

摘要

The paper considered an autooscillator with LCR-distributed parameters in the feedback circuit, which inductively interacts with a section of a long line. A version of the Krylov-Boolyubov-Mitropol'skii asymptotic method was developed for analysis. It is shown that connection into the device of an additional "tuned" high-Q line leads to destruction of multicyclicity of a base oscillator and bifurcation of single-frequency, dual-frequency, etc. periodic autooscillations with the increase in the active element gain. Theoretical conclusions are confirmed experimentally.