A data conversion technique suitable for digital power amplifiers (DPAs) is described, based on a modified sigma-delta modulator. The pulse-repetition frequency (PRF) in the bit stream is reduced in order to increase the efficiency in the power output switching stage. The system offers PRFs comparable to pulse-width-modulation (PWM)-based DPAs, but with higher linearity and more than a thirty-fold reduction in bit-clock frequency.

Authors: Macgrath, Anthony J.; Sandler, Mark B.
Affiliation: Department of Electronic and Electrical Engineering, King's College London, London, UK
JAES Volume 45 Issue 6 pp. 476-487; June 1997
Publication Date: June 1, 1997 Import into BibTeX
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=7851

Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!

This paper costs $33 for non-members and is free for AES members and E-Library subscribers.

Learn more about the AES E-Library

E-Library Location: (CD aes5)   /jrnl8997/1997/8682.pdf

Start a discussion about this paper!