Title :
Maximizing the sequence length in a MASH delta sigma modulator by dithering
Author :
Sanyal, Arindam ; Bhattacharyya, T.K.
Author_Institution :
Dept. of Electron. & Electr. Commun. Eng., IIT Kharagpur, Kharagpur, India
Abstract :
This paper presents a novel method of applying dither to a first order digital delta sigma modulator (DDSM) in order to obtain maximized sequence length for any input value and any initial condition. The effect of applying dither at various stages of a multi-stage noise-shaping network (MASH) is also investigated. The performance of the proposed DDSM is compared with existing structures. The performance is confirmed mathematically, and by simulation.
Keywords :
delta-sigma modulation; sequences; MASH delta sigma modulator; dither; multistage noise-shaping network; Clocks; Delay; Delta-sigma modulation; Frequency synthesizers; Multi-stage noise shaping; Noise shaping; Phase noise; Quantization; Signal resolution; Signal synthesis; Frequency synthesizers; dither techniques; quantization; sigma-delta modulation;
Conference_Titel :
Microwave Symposium Digest, 2009. MTT '09. IEEE MTT-S International
Conference_Location :
Boston, MA
Print_ISBN :
978-1-4244-2803-8
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2009.5166034
