Large-Signal Nonlinear Model of a Highly IntegratedudQuad-Band GSM Transmit Front-End Module

摘要

A large-signal nonlinear model was developed foruda highly integrated quad-band (UGSM/EGSM/DCS/PCS)udtransmit front-end module (TX-FEM). The model includesudseparately validated large-signal nonlinear models of HBTudamplifiers; large-signal nonlinear PHEMT switch models;udlarge-signal nonlinear Si BJT PA controller model; largesignaludEM-co-simulated model of a dual-band directionaludcoupler-detector, including large-signal GaAs MESFETuddiodes; and Momentum or lumped element based model ofudthe multi-chip module (MCM) level passive networks. Toudauthors’ best knowledge this is the highest complexityudlarge-signal transistor-based model of a radio sub-systemudever reported.