Reconfigurable Digital PAs for Backoff Efficiency, Output Power, Bandwidth, and Linearity Enhancement

Portable devices with increasing wireless links for various communication standards demand highly reconfigurable transmitters with high efficiency and compact size. Digital PAs with programmable output amplitude, phase, operation bands and operation modes exhibit advantages with improved efficiency, bandwidth, and linearity in advanced CMOS technology compared with conventional silicon-based analog PAs. In this talk, design techniques of multi-mode CMOS digital PAs with deep backoff efficiency, output power, bandwidth and linearity enhancement will be discussed.