Multi-sine Response of Third Order Nonlinear Systems with Memory Based on Two-tone Measurements

This paper presents a framework that allows the third order response computation of a dynamic nonlinear system to a multi-sine signal input from only standard two-tone test results. A simulation implementation of the methodology is presented for a third order system with memory. The validation test is performed with a five tone uncorrelated input signal and states the feasibility of the method in the intermodulation distortion´s prediction. The work now presented is a step forward to the understanding of the memory generation mechanisms and in the extrapolation of the usual standard RF test results to the prediction of the dynamic system´s output to a multi-sine signal excitation