关键词：数字调制发射机；无线通信；增强效率
摘 要：The last decade has witnessed a tremendous growth in wireless communications. Consumer demands for battery-operated mobile devices with versatile, high data-rate communication capabilities that are of low cost, small form-factor and long operating cycle have motivated the research on fully-integrated, back-o -effcient and coexistence-friendly wireless transceivers in CMOS VLSI technology. However, the full integration of an ecient CMOS power ampli er (PA) into such a transceiver is still among the most difficult challenges towards a true System-On-Chip (SOC) solution. This thesis investigates the PA eciency enhancement techniques for a complete power transmitter system that is fully-integrated and coexistable.