The Noise Transfer Function (NTF) of Delta-Sigma modulators is typically designed after the features of the input signal. We suggest that in many applications, and notably those involving D/D and D/A conversion or actuation, the NTF should instead be shaped after the properties of the output/reconstruction filter. To this aim, we propose a framework for optimal design based on the Kalman-Yakubovich-Popov (KYP) lemma and semi-definite programming. Some examples illustrate how in practical cases the proposed strategy can outperform more standard approaches.
Output Filter Aware Optimization of the Noise Shaping Properties of Delta-Sigma Modulators Via Semi-Definite Programming / Sergio Callegari; Federico Bizzarri. - In: IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS. I, REGULAR PAPERS. - ISSN 1549-8328. - STAMPA. - 60:9(2013), pp. 2352-2365. [10.1109/TCSI.2013.2239091]
Output Filter Aware Optimization of the Noise Shaping Properties of Delta-Sigma Modulators Via Semi-Definite Programming
CALLEGARI, SERGIO;
2013
Abstract
The Noise Transfer Function (NTF) of Delta-Sigma modulators is typically designed after the features of the input signal. We suggest that in many applications, and notably those involving D/D and D/A conversion or actuation, the NTF should instead be shaped after the properties of the output/reconstruction filter. To this aim, we propose a framework for optimal design based on the Kalman-Yakubovich-Popov (KYP) lemma and semi-definite programming. Some examples illustrate how in practical cases the proposed strategy can outperform more standard approaches.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
