Title :
Continuous-time feed-forward ΣΔ- modulators with robust signal transfer function
Author :
Ranjbar, Mohammad ; Mehrabi, Arash ; Oliaei, Omid
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Massachusetts Amherst, Amherst, MA
Abstract :
We present a general methodology for the design of continuous-time sigma-delta modulators with a lowpass signal transfer function without peaking. We also propose two new feedforward architectures exhibiting significantly lower sensitivity to coefficient mismatch compared with conventional feedforward structures.
Keywords :
modulators; transfer functions; feed-forward SigmaDelta- modulators; lowpass signal transfer function; sigma-delta modulators; Delta-sigma modulation; Design methodology; Equations; Feedback; Feedforward systems; Filtering; Filters; Robustness; Signal design; Transfer functions;
Conference_Titel :
Circuits and Systems, 2008. ISCAS 2008. IEEE International Symposium on
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4244-1683-7
Electronic_ISBN :
978-1-4244-1684-4
DOI :
10.1109/ISCAS.2008.4541808
