Analysis and design of feedforward systems are complicated due to the presence of two nonlinear amplifiers and the requirement of amplitude, delay, and phase match in two different loops. For this reason, analytical tools are hard to develop but are required for initial designs and understanding of the system performance. Relation of the actual systems and the models based on certain assumptions is necessary. In this work we extend the previously developed analytical model and present the verifications with RF simulations performed by real power amplifiers and components. © 2003 EUMA.