Altinok, Gunes and Al-Janabi, Mohammed and Kale, Izzet (2010) A describing function based method for predicting the stability of higher-order high-pass sigma-delta modulators. In: 2010 Conference on Research in Microelectronics and Electronics (PRIME), 18-21 July 2010. IEEE, pp. 1-4. ISBN 9781424479054
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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.
|Item Type:||Book Section|
|Research Community:||University of Westminster > Electronics and Computer Science, School of|
|Deposited On:||07 May 2010 14:22|
|Last Modified:||08 Mar 2011 15:13|
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