Autostochastic system of coupled microwave generators

Equations are presented describing a system of coupled generators, taking i nto account the feedback delay and time lag in each partial generator. The delay in the coupling elements between the generators is also taken into ac count. A numerical analysis of the dynamics of one, two, and three generato rs is performed. It is shown that chaotization of the oscillations occurs m ore readily in a coupled system of two or three generators than in the case of a single generator. This is confirmed by the results of experiments on transistor microwave generators. It is found that noise fluctuations can be obtained in a system of three coupled transistor generators over a broad r ange of frequencies in the centimeter wavelength range. (C) 1999 American I nstitute of Physics. [S1063-7850(99)02104-7].