Discrete-time RF phase and pulse width modulation for power efficient switch-mode transmitter

Discrete-time RF pulse width modulation is mathematically analyzed. From the analysis a recipy for the generation of amplitude modulated RF signals by means of pulse-width modulation is derived. Furthermore a suitable fully digital polar phase and pulse width modulator architecture for switch-mode w...

Full description

Saved in:
Bibliographic Details
Published in2011 Semiconductor Conference Dresden pp. 1 - 5
Main Authors Stanitzki, A., Scheytt, J. C.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.09.2011
Subjects
Equations
Mathematical model
Phase modulation
Pulse width modulation
Radio frequency
Switches
Online AccessGet full text

Cover

More Information
Summary:Discrete-time RF pulse width modulation is mathematically analyzed. From the analysis a recipy for the generation of amplitude modulated RF signals by means of pulse-width modulation is derived. Furthermore a suitable fully digital polar phase and pulse width modulator architecture for switch-mode wireless transmitters is proposed. A system with 8 discrete pulse widths rsp. 16 phases at 2 GHz is modelled and simulated in Matlab/Simulink. It exhibits an SFDR of better than -67 dBc and EVM better than 1.8% with an 8 MSps 8-QAM test signal.
ISBN:1457704315
9781457704314
DOI:10.1109/SCD.2011.6068696