NDLI: Sigma-delta modulator for bandpass signal

Content Provider	IEEE Xplore Digital Library
Author	Kuo, C.J. Liu, C.T. Hou, C.J.
Copyright Year	1996
Description	Author affiliation: Dept. of Electr. Eng., Nat. Chung Cheng Univ., Chiayi, Taiwan (Kuo, C.J.; Liu, C.T.; Hou, C.J.)
Abstract	The sigma-delta modulator (SDM) is an excellent choice for high resolution analog to digital converters. Recently a bandpass SDM was desired to convert an IF signal into a digital bit stream directly. In this paper, we propose a new bandpass architecture of an SDM based on MASH topology, which is called a bandpass MASH. Similar to the conventional MASH, bandpass MASH is always stable because all its poles are zeros. Further, since the loop coefficients of the proposed architecture are ones, the circuit is simple to design and easy to implement via VLSI technology. Behavior simulation shows that the proposed bandpass MASH achieves 17 bits resolution for an IF signal at 455 kHz. In addition, it also performs better than several other bandpass SDM's.
Starting Page	29
Ending Page	32
File Size	350476
Page Count	4
File Format	PDF
ISBN	0780330730
DOI	10.1109/ISCAS.1996.539800
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1996-05-15
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Delta-sigma modulation Multi-stage noise shaping Signal resolution Digital modulation Analog-digital conversion Circuit topology Filtering theory Poles and zeros Very large scale integration Circuit simulation
Content Type	Text
Resource Type	Article

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