A 950-MHz IF second-order integrated LC bandpass delta-sigma modulator

A second-order integrated LC bandpass delta-sigma modulator is presented. This modulator is implemented in a 0.5-/spl mu/m bipolar process and can be used for digitizing radio frequency or high intermediate frequency signals. It employs an integrated LC resonator with active Q-enhancement and two no...

Full description

Saved in:
Bibliographic Details
Published in:IEEE journal of solid-state circuits 1998-05, Vol.33 (5), p.723-732
Main Authors: Gao, W., Snelgrove, W.M.
Format: Article
Language:English
Subjects:
Analog-digital conversion
Delta modulation
Digital modulation
Feedback loop
Frequency conversion
Inductors
Radio frequency
Resonator filters
RF signals
Signal processing
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A second-order integrated LC bandpass delta-sigma modulator is presented. This modulator is implemented in a 0.5-/spl mu/m bipolar process and can be used for digitizing radio frequency or high intermediate frequency signals. It employs an integrated LC resonator with active Q-enhancement and two nonreturn-to-zero digital-to-analog pulse-shaping feedback loops. The modulator test chip achieves a signal-to-noise ratio of 57 dB over a 200-kHz bandwidth for converting a 950-MHz signal, and dissipates 135 mW with a 5-V supply.
ISSN:0018-9200
1558-173X
DOI:10.1109/4.668987