Ya. Volkov et Io. Neches, CALCULATION OF THE RESPONSE OF MULTIPLE-INPUT NONLINEAR DEVICES UNDERSTEADY-STATE CONDITIONS, Telecommunications & radio engineering, 48(7), 1993, pp. 49-52
Expressions are obtained for determining the steady-state response of
multiple-input nonlinear circuits in the form of a multivariate Maclau
rin series and this method is compared with the method of numerical in
tegration in the time domain using the example of the design a transis
tor mixer circuit for a two-frequency periodic input.