Title
Low Distortion Cmos Class-D Amplifier With Double-Band Hysteresis
Abstract
A new low distortion class-D switching power amplifier (PA) is presented using a double-band hysteresis control (DBHC) technique. This PA utilizes two Schmitt trigger comparators to realize 4-level comparison. The THD is lowered due to reduction of overshoot and Hysteresis-band. Simulation results, using a 0.13 mu m CMOS technology, show that in this PA the THD is improved, while it supports relatively high output power. The performance of DBHC-PA is also experimentally tested and its operation is verified by a PCB prototype amplifier. Measurements illustrate 58% THD improvement compared to conventional class-D PA.
Year
DOI
Venue
2010
10.1587/elex.7.273
IEICE ELECTRONICS EXPRESS
Keywords
Field
DocType
switching power amplifier, Schmitt trigger, Hysteresis-band
Comparator,Total harmonic distortion,Class-D amplifier,Computer science,Schmitt trigger,Direct-coupled amplifier,Electronic engineering,CMOS,Distortion,Amplifier
Journal
Volume
Issue
ISSN
7
4
1349-2543
Citations 
PageRank 
References 
1
0.38
2
Authors
3
Name
Order
Citations
PageRank
Parviz Amiri1114.80
Abdolreza Nabavi24717.09
Seyed Yahya Mortazavi322.10