A. Cruz Serra

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A histogram-based method for quasi-static test of analog-to-digital converters has been proposed for standardization aims. The test exploits the use of small-amplitude triangular waves. Different signal offset values are used to fully stimulate the converter input range. The reduced amplitude and slope of the input triangular wave with respect to the(More)
The quality of measurements made in any system is quantified by supplying the expanded uncertainty of the result, as recommended in the Guide to Uncertainty in Measurement. In a system that involves analog-to-digital converters (ADCs), one of the sources of uncertainty is the converter’s gain and offset error. The uncertainty of these two parameters should(More)
(1) Instituto de Telecomunicações / Instituto Superior Técnico, Technical University of Lisbon, Av. Rovisco Pais, 1049-001 Lisboa, Portugal, Ph: +351-218418376 Fax: +351-218417672, E-mail: falegria@lx.it.pt, (2) Instituto de Telecomunicações / Instituto Superior Técnico, Technical University of Lisbon, Av. Rovisco Pais, 1049-001 Lisboa, Portugal, Ph:(More)
Exploiting the experimental factorial design and the potentiality of Turbiscan AG Station, we developed and characterized unmodified and DDAB-coated NLC prepared by a low energy organic solvent free phase inversion temperature technique. A 22 full factorial experimental design was developed in order to study the effects of two independent variables (DDAB(More)