Title :
A Novel Biquad Filter Circuit for Continuous-Time Sigma-Delta Modulators
Author :
Kuang, Wensheng V. ; Wight, Jim S.
Author_Institution :
Samsung Telecommun. of America, Richardson
Abstract :
A novel biquad circuit is presented that allows the loop filter of a high-order continuous-time sigma-delta modulator to be implemented by cascading low-order biquad sections, considerably easing the design and implementation of the high-order continuous-time sigma-delta modulator. Experiment on a 4th-order bandpass continuous-time sigma- delta modulator is conducted successfully and the results are presented.
Keywords :
band-pass filters; biquadratic filters; continuous time filters; sigma-delta modulation; band-pass filters; biquad filter circuit; continuous-time sigma-delta modulators; loop filter; Band pass filters; Coupling circuits; Delay; Delta-sigma modulation; Feedback loop; Prototypes; Resistors; Resonator filters; Sampling methods; Transfer functions;
Conference_Titel :
Circuits and Systems, 2006. MWSCAS '06. 49th IEEE International Midwest Symposium on
Conference_Location :
San Juan
Print_ISBN :
1-4244-0172-0
Electronic_ISBN :
1548-3746
DOI :
10.1109/MWSCAS.2006.382010
