Title :
Performance of complex noise transfer functions in bandpass and multi band sigma delta systems
Author :
Aziz, Pervez M. ; Sorensen, Henrik V. ; Van der Spiegel, Jan
Author_Institution :
Dept. of Electr. Eng., Pennsylvania Univ., Philadelphia, PA, USA
fDate :
30 Apr-3 May 1995
Abstract :
The use of complex noise transfer functions for bandpass sigma delta modulation is described and compared with real transfer functions. For bandpass signals centered at higher frequencies, the use of complex noise transfer functions (NTFs) allows performance improvements over a modulator of the same order using real transfer functions. Results are presented that show the performance improvement possible using complex second order modulators
Keywords :
integrated circuit noise; poles and zeros; sigma-delta modulation; transfer functions; bandpass sigma delta modulation; complex noise transfer functions; multi band sigma delta systems; performance improvement; second order modulators; Attenuation; Bandwidth; Delta-sigma modulation; Filtering theory; Finite impulse response filter; Frequency conversion; Poles and zeros; Quantization; Signal resolution; Transfer functions;
Conference_Titel :
Circuits and Systems, 1995. ISCAS '95., 1995 IEEE International Symposium on
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-2570-2
DOI :
10.1109/ISCAS.1995.521595
