Nonlinear Quantization Technique for Multibit Sigma-Delta Modulators

Autor:	Jose A. A. de Andrade, Jose E. G. Medeiros, Sandro A. P. Haddad, Laryssa L. O. Costa
Rok vydání:	2020
Předmět:	Nonlinear system SINAD Computer science Quantization (signal processing) Sigma Data_CODINGANDINFORMATIONTHEORY Unscented transform Topology Delta-sigma modulation
Zdroj:	NEWCAS
DOI:	10.1109/newcas49341.2020.9159816
Popis:	This paper presents a nonlinear quantization technique applied in a multibit sigma-delta $\Sigma\triangle$ modulator. The technique is based on the unscented transform and utilizes a flash topology to modeling the quantizer of the modulator. To verify the proposed methodology a 4-bit, first-order and second-order $\Sigma\triangle$ modulators were modeled and simulated. Simulation results confirm the validity of the technique and in this case has been shown that significant improvements can be achieved on SINAD compared with the linear multibit modulators.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f345e652c4df44b01e30238042c76c48 https://doi.org/10.1109/newcas49341.2020.9159816 Zobrazit plný text záznamu