High Efficiency Dual-mode RF Transmitter Using Envelope-tracking Dual-band Class-E Power Amplifier for W-CDMA/WiMAX Systems

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C. Chen[1], C. Li[1], T. Horng[1], J. Jau[2], J. Li[2], [1]National Sun Yat-sen University, Kaohsiung, Taiwan, [2]Industrial and Technology Research Institute, Hsinchu, Taiwan