SiGe Class-E Power Amplifier with Envelope Tracking for Mobile WiMAX/Wibro Applications. - Yan Li 008; Jerry Lopez; Donald Y. C. Lie; Kevin Chen 003; Stanley Wu; Tzu-Yi Yang (ISCAS, 2009)

Design of Highly Efficient Wideband RF Polar Transmitters Using the Envelope-Tracking Technique. - Jerry Lopez; Yan Li 008; Jeremy D. Popp; Donald Y. C. Lie; Chia-Chang Chuang; Kevin Chen 003; Stanley Wu; Tzu-Yin Yang; Gin-Kou Ma (IEEE J. Solid State Circuits, 2009)

Efficiency enhancement and linearity trade-offs for cascode vs. common-emitter SiGe power amplifiers in WiMAX polar transmitters. - Yan Li 008; Jerry Lopez; Donald Y. C. Lie; Kevin Chen 003; Stanley Wu; Tzu-Yi Yang (ISCAS, 2010)

Circuits and System Design of RF Polar Transmitters Using Envelope-Tracking and SiGe Power Amplifiers for Mobile WiMAX. - Yan Li 008; Jerry Lopez; Donald Y. C. Lie; Kevin Chen 003; Stanley Wu; Tzu-Yi Yang; Gin-Kou Ma (IEEE Trans. Circuits Syst. I Regul. Pap., 2011)