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Aliasing-Free Digital Pulse-Width Modulation for Burst-Mode RF Transmitters

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4 Author(s)
Hausmair, K. ; Signal Process. & Speech Commun. Lab., Graz Univ. of Technol., Graz, Austria ; Shuli Chi ; Singerl, P. ; Vogel, C.

Burst-mode operation of power amplifiers (PAs) is a promising concept towards higher power efficiency in radio frequency (RF) transmitters. Such transmitters use pulse-width modulation (PWM) to create the driving signal for the PA, and a reconstruction filter after amplification to obtain the transmission signal. However, conventional digital pulse-width modulated signals contain a large amount of distortion that cannot be removed by the reconstruction filter in a satisfactory manner.

Published in:

Circuits and Systems I: Regular Papers, IEEE Transactions on  (Volume:60 ,  Issue: 2 )