Mathematical model of the measuring procedure of an automatic device for built-in monitoring of microwave path parameters

A mathematical model of the procedure for automatic measurement of the complex reflection coefficient and power level in the microwave path based on the quadrature measurement method has been developed. Analytical expressions are obtained for the quadrature components at the outputs of two quadrature detectors for the case of a mismatched microwave path. Formed and solved a modified system of nonlinear equations with respect to measured values, which allows setting zero guesses.