TY - GEN
T1 - A three level Trellis noise shaping converter for class D amplifiers
AU - Ausiello, Ludovico
AU - Rovatti, Riccardo
AU - Setti, Gianluca
N1 - Generated from Scopus record by KAUST IRTS on 2023-02-15
PY - 2006/12/1
Y1 - 2006/12/1
N2 - Class D amplifiers can represent signals with three different output levels, +V cc,0, -V cc, with no distortion. Exploiting this in order to achieve a better performance with no switching frequency increase, an extension to the classic Pulse Width Modulation two level A/D conversion is proposed. Coding is achieved by extending output waveforms of a Trellis based Sigma Delta Modulation to three levels. Simulation results have shown that, using the same symbol rate, a three level pattern achieved from 3.7 to 8.2 dB of SINAD improvement and a power consumption up to 5 times smaller.
AB - Class D amplifiers can represent signals with three different output levels, +V cc,0, -V cc, with no distortion. Exploiting this in order to achieve a better performance with no switching frequency increase, an extension to the classic Pulse Width Modulation two level A/D conversion is proposed. Coding is achieved by extending output waveforms of a Trellis based Sigma Delta Modulation to three levels. Simulation results have shown that, using the same symbol rate, a three level pattern achieved from 3.7 to 8.2 dB of SINAD improvement and a power consumption up to 5 times smaller.
UR - http://www.scopus.com/inward/record.url?scp=84866487036&partnerID=8YFLogxK
M3 - Conference contribution
SN - 9781604235975
SP - 2068
EP - 2071
BT - Audio Engineering Society - 120th Convention Spring Preprints 2006
ER -