S.A. Meshkov – Ph.D. (Eng.), Associate Professor, Bauman Moscow State Technical University E-mail: sb67241@mail.ru

The numerical methods and algorithms for probabilistic analysis of the microwave microcircuits parameters for computer-aided design systems are considered. An algorithm for calculating the yield conditional probability of the multiparameter microwave devices is  described. The methodological approaches to the modelling of technological spread of the parameters of microwave circuits in computer-aided design are discusses. The problem of conjugation of a subsystem for modeling design parameters technological errors with a subsystem for the deterministic analysis of microwave microcircuits electrical characteristics is discussed. The rules and examples of probabilistic modelling of the microwave circuits design parameters are provided.

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