Title :
Improved cascaded sigma-delta noise shaper architecture with reduced sensitivity to circuit nonlinearities
Author :
Gothenberg, A. ; Tenhunen, H.
Author_Institution :
Dept. of Microelectron. & Inf. Technol., R. Inst. of Technol., Stockholm, Sweden
fDate :
7/4/2002 12:00:00 AM
Abstract :
An improved cascaded sigma-delta noise shaper with reduced sensitivity to switch and opamp nonlinearities is presented. The architecture can be used for wideband applications, i.e. RF-front ends, at low oversampling ratio, as well as for high-resolution audio applications
Keywords :
cascade networks; pulse shaping circuits; sigma-delta modulation; RF-front ends; cascaded sigma-delta noise shaper architecture; circuit nonlinearities; high-resolution audio applications; low oversampling ratio; opamp nonlinearities; sensitivity; switch nonlinearities; wideband applications;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20020491
