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2011 Twenty-Sixth Annual IEEE Applied Power Electronics Conference and Exposition (APEC)
Power amplifier supplied with constant supply voltage has very low efficiency in the transmitter. A DC-DC converter in series with a linear regulator can be used to obtain voltage modulation. Since this converter should be able to change the output voltage very fast, a multiphase buck converter with a minimum time control strategy is proposed. To modulate supply voltage of the envelope amplifier, the multiphase converter works with some particular duty cycle (i/n, i=l, 2 ... n, n is the numberdoi:10.1109/apec.2011.5744702 fatcat:wnh6mfvnhvcrhoihasduq6av54