Title :
Noise shaping modulator with logarithmic response
Author :
Hernandez, L. ; Paton, Susana
Author_Institution :
Dept. de Ingenieria Electr., Univ. Carlos III, Madrid
fDate :
6/10/1999 12:00:00 AM
Abstract :
A discrete-time noise-shaping modulator is shown to encode the logarithm of its input without using logarithmic or exponential elements. Used as an A/D converter, the proposed modulator may replace a logarithmic amplifier followed by a uniform quantiser. Used as a D/A converter, it may replace a multibit piecewise logarithmic circuit with a single-bit circuit
Keywords :
analogue-digital conversion; digital-analogue conversion; modulators; A/D converter; ADC; D/A converter; DAC; discrete-time modulator; logarithmic response; noise shaping modulator;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19990690
