Bandpass sigma-delta modulation using frequency translation

Bandpass sigma-delta modulation using frequency translation

A bandpass sigma-delta modulation Analog-to-Digital (A/D) converter that uses direct conversion to base-band with in phase and quadrature paths within the feedback loop is described. The bandpass input signal is processed with continuous-time circuitry and the I/Q base-band signals are processed wit...

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Bibliographic Details
Published in:Proceedings of 40th Midwest Symposium on Circuits and Systems. Dedicated to the Memory of Professor Mac Van Valkenburg Vol. 1; pp. 297 - 300 vol.1
Main Authors: Tao, H., Khoury, J.M.
Format: Conference Proceeding
Language:English
Published: IEEE 1997
Subjects:
Band pass filters
Baseband
Capacitors
Circuits
Delta-sigma modulation
Feedback loop
Frequency conversion
Resonant frequency
Signal processing
Signal resolution
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Description
Summary:A bandpass sigma-delta modulation Analog-to-Digital (A/D) converter that uses direct conversion to base-band with in phase and quadrature paths within the feedback loop is described. The bandpass input signal is processed with continuous-time circuitry and the I/Q base-band signals are processed with switched-capacitor circuits. Experimental and simulation results indicate that the passband center frequency can be maximized while suppressing the effects of I/Q mismatches.
ISBN:0780336941
9780780336940
DOI:10.1109/MWSCAS.1997.666092