Intermodulation Analysis of Nonlinear Devices for Multiple Carrier Inputs

摘要

In numerous communication systems, inputs consisting of many modulated carriers are passed through devices which exhibit both amplitude and phase non-linearities. This report is concerned with the analysis and computation of the effects of such devices on bandpass signals consisting of a moderate number of modulated sine waves, where the non-linear device is wide-band in comparison with the signal. Such device may be characterized by measurements of its single-carrier amplitude and phase transfer functions, and is modeled here by a quadrature structure which includes two non-linearities each of which, acting on its own, would exhibit only amplitude distortion. (Author)