NDLI: A Describing Function based method for predicting the stability of higher-order high-pass Σ-Δ modulators

Content Provider	IEEE Xplore Digital Library
Author	Altinok, G.D. Al-Janabi, M. Kale, I.
Copyright Year	2010
Description	Author affiliation: Applied DSP and VLSI Research Group, Department of Electronics, University of Westminster, London, United Kingdom (Altinok, G.D.; Al-Janabi, M.; Kale, I.)
Abstract	This paper presents the stability analysis for higher-order single-loop high-pass Σ-Δ modulators based on a combination of the Describing Function (DF) method and the quasi-linear modeling of the quantizer. Closed form mathematical expressions are derived for the stability curves for different quantizer gain values. The stability prediction for the maximum stable input limits for third-, fourth-, and fifth-order Type-II-Chebyshev-based high-pass Σ-Δ modulators are established. The theoretical results are shown to be in good agreement with the simulation results for different sinusoidal input amplitudes. The proposed mathematical models of the quantizer will immensely help in speeding up the design of higher order high-pass Σ-Δ modulators.
Starting Page	1
Ending Page	4
File Size	312552
Page Count	4
File Format	PDF
ISBN	9781424479054
e-ISBN	9783981375404
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-07-18
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	VDE
Subject Keyword	component Noise High-pass sigma-delta A/D modulator Modulation stability analysis Chebyshev approximation Quantization Predictive models Stability analysis describing function method Mathematical model
Content Type	Text
Resource Type	Article

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