Conference Publication Details
Mandatory Fields
Podsiadlik, T;Dooley, J;Canniff, A;Farrell, R
2009 EUROPEAN CONFERENCE ON CIRCUIT THEORY AND DESIGN, VOLS 1 AND 2
Pulse Width Modulation of Multilevel Delta-Sigma Output for Class S Power Amplifier
2009
January
Published
1
2 ()
Optional Fields
457
460
In this paper a platform that implements the digital processing and RF carrier generation for class S PA operation is presented. This implementation consists of a bandpass delta sigma modulator (DSM) with a multi-level quantizer followed by a pulse width modulator and frequency upconversion stage. The principle of operation is described and validation is provided through simulation and experimental measurements on a prototype of the modulator. It is shown that the output from the new modulator can achieve significant improvements in SNR performance compared to a two level DSM with little added computational overhead.
Grant Details