Title :
A fourth-order bandpass sigma-delta modulator
Author :
Jantzi, Stephen A. ; Snelgrove, W. Martin ; Ferguson, Paul F., Jr.
Author_Institution :
Dept. of Electr. Eng., Toronto Univ., Ont., Canada
fDate :
3/1/1993 12:00:00 AM
Abstract :
The modulator of a bandpass analog/digital (A/D) converter, with 63 dB signal/noise for broadcast AM bandwidth signals centered at 455 kHz, has been implemented by modifying a commercial digital-audio sigma-delta (ΣΔ) converter. It is the first reported fully monolithic implementation of bandpass noise shaping and has applications to digital radio
Keywords :
CMOS integrated circuits; analogue-digital conversion; digital radio systems; modulators; 455 kHz; 63 dB; ADC; SNR; bandpass noise shaping; bandpass sigma-delta modulator; broadcast AM bandwidth signals; digital radio; fourth order; monolithic implementation; Analog-digital conversion; Band pass filters; Bandwidth; Delta-sigma modulation; Digital communication; Digital filters; Digital modulation; Feedback; Mathematical model; Noise shaping;
Journal_Title :
Solid-State Circuits, IEEE Journal of
