Nonlinear distortion analysis of p-i-n diode attenuators using Volterra series representations

An application of Volterra series to the analysis of a network with nonlinear elements represented by Volterra series is presented. For the equivalent circuit of this network, the outputs of the
n
th-order nonlinear sources are given in the frequency domain. The model of the p-in diode in a form of the Volterra series, which was proposed earlier by the author, is implemented and the results of the analysis are used to derive the cross-modulation coefficient for a
\pi
-type attenuator with three p-in diodes. Computation results are compared with those obtained from measurements.