Novel control architecture for JPHEMT power amplifiers achieving high efficiency EDGE application

A saturated PA architecture for achieving best-in-class EDGE performance whilst maintaining dual-mode compatibility with GSM is presented. This technique has been developed to utilise the specific advantages the E-Mode J-PHEMT process provides for these applications. This represents a credible solution to the demand of a highly efficient integrated dual-mode (EDGE/GSM) PA control architecture.