A new simple extraction method for higher order components of channel current in GaAs MESFET

A simple new extraction method of the higher order channel current in GaAs MESFET has been developed. Low frequency ( ~ 60 MHz ) two-tone signals are employed to measure the harmonic components. The measured data are fitted to the Volterra series analysis for extracting of Taylor series coefficients of the nonlinear channel current. This proposed parameter extraction procedure is simple and straightforward. The extracted current model is utilized successfully for intermodulation analysis.