Prediction ofPAOptimumLoadbySmall Signal Parameters

linear behaviour. Exactcalculations havebeencarried out derived using this representation obtaining optimum loads andclosed formexpressions havebeenderived, foroutputderending thiesentat, taining optimumload poweroptimisation andpower-added efficiency optimisation. depending onallofthemodelparameters. Theresults lead Thetheoretical results arecompared tothereal behaviour of totheconclusion thattheoptimum theoretical loadsfor anonlinear device, demonstrating theeffectiveness ofthe Pout andPAEaredifferent, andmatchquite wellthereal approach. behaviour ofa nonlinear device, up tomoderate compression levels. IndexTerms- ClassA, linearequivalent circuit, optimisation, optimum load.