Title :
Complex cascaded bandpass ΣΔ ADC Design
Author :
Kumar, Y. B Nithin ; Talay, Selçuk ; Maloberti, Franco
Author_Institution :
Electron. Dept., Univ. of Pavia, Pavia, Italy
Abstract :
The design of a quadrature bandpass sigma-delta (SigmaDelta) ADC build by cascading two complex modulator is presented. The utilization of cascading enables the independent control of zeros of the noise transfer function. Design method and simulation results including errors due to non-idealities as well as limits of a fourth order scheme are presented. The flexibility of placing notches at critical frequency and benefits are outlined.
Keywords :
sigma-delta modulation; transfer functions; fourth order scheme design; noise transfer function independent control; nonideality error; quadrature bandpass sigma-delta ADC design; two complex modulator cascading; Bandwidth; Baseband; Delay; Delta-sigma modulation; Design methodology; Equations; Filtering theory; Frequency; Signal resolution; Transfer functions;
Conference_Titel :
Circuits and Systems, 2009. ISCAS 2009. IEEE International Symposium on
Conference_Location :
Taipei
Print_ISBN :
978-1-4244-3827-3
Electronic_ISBN :
978-1-4244-3828-0
DOI :
10.1109/ISCAS.2009.5118463
