DocumentCode
3114598
Title
A multi-feedback design for LC bandpass delta-sigma modulators
Author
Shoaei, Omid ; Snelgrove, W. Martin
Author_Institution
Dept. of Electron., Carleton Univ., Ottawa, Ont., Canada
Volume
1
fYear
1995
fDate
30 Apr-3 May 1995
Firstpage
171
Abstract
A new technique for designing an LC bandpass delta-sigma modulator is presented. This method is based on pulse shaping of a DAC output signal such that one can realize a desired (arbitrary) loop transfer function. Especially for higher-order modulators where extra LC sections are added, sufficient number of parameters are provided in the feedback loop. It is shown that by creating more degrees of freedom one can achieve the maximum SNR in a given modulator order without constraining the noise transfer function of the modulator
Keywords
circuit feedback; circuit noise; modulators; pulse shaping circuits; sigma-delta modulation; transfer functions; DAC output signal; LC bandpass delta-sigma modulator; SNR; loop transfer function; multi-feedback design; noise; pulse shaping; Convolution; Delay effects; Delta modulation; Feedback loop; Filtering theory; Filters; Hydrogen; Propagation delay; Pulse modulation; Transfer functions;
fLanguage
English
Publisher
ieee
Conference_Titel
Circuits and Systems, 1995. ISCAS '95., 1995 IEEE International Symposium on
Conference_Location
Seattle, WA
Print_ISBN
0-7803-2570-2
Type
conf
DOI
10.1109/ISCAS.1995.521478
Filename
521478
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