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.
Sergio Callegari, Federico Bizzarri (2013). Output Filter Aware Optimization of the Noise Shaping Properties of Delta-Sigma Modulators Via Semi-Definite Programming. IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS. I, REGULAR PAPERS, 60(9), 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.
