Title :
Class-E Power Amplifier in a Polar EDGE Transmitter
Author :
Nestor D. Lopez;Xufeng Jiang;Dragan Maksimovic;Zoya Popovic
Author_Institution :
Department of Electrical and Computer Engineering, University of Colorado, Boulder, Colorado 80309, USA
fDate :
6/6/2016 12:00:00 AM
Abstract :
This paper presents the design and characterization of a 880-MHz class-E power amplifier (PA) designed to operate in a polar transmitter for EDGE signals. The amplifier is intended to be supplied from a 3.6 V battery using a linear amplifier as an envelope tracker, which limits the maximum drain voltage to 3.3 V. With a +7.6 dBm input signal the maximum output power (VDD = 3.3V) is +22.4 dBm with 14.9 dB of gain, a drain efficiency of 71.6% and PAE of 69%. An output power dynamic range of 15.4 dB is achieved when the voltage is varied from 0.5-3.3 V. Taking into account the statistics of an EDGE signal, the mean drain efficiency and PAE are 75.7% and 64.4%, with a mean output power of +18.26 dBm
Keywords :
"Power amplifiers","Transmitters","Voltage","RF signals","Radiofrequency amplifiers","Switches","Power generation","Radio frequency","Signal processing","Signal restoration"
Conference_Titel :
Microwave Symposium Digest, 2006. IEEE MTT-S International
Print_ISBN :
0-7803-9541-7
DOI :
10.1109/MWSYM.2006.249771
