Patrick Loumeau

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This article presents the optimization process for a new architecture of digital-enhanced radio frequency receiver. This receiver is based on combining charge sampling filters and hybrid filter banks techniques. We describe the structure optimization based on a compromise between performance and implementation constraints. We then show the performances(More)
High-pass /spl Delta//spl Sigma/ modulator has the advantage of immunity from the low frequency noise and is thus very effective in the parallel architectures. In this paper, we present the behavioral modelling and simulation of /spl Delta//spl Sigma/ modulators in VHDL-AMS, and in particular of the high-pass modulator. A set of models in VHDL-AMS suitable(More)
In previous work, a non-uniform sampling (NUS) technique to control analog-to-digital conversion (ADC) in a multistandard radio receiver was proposed. In this context of wide band radio signals, the NUS-based ADC offers the advantages of relaxing antialiasing filter (AAF) constraints, decreasing the sampling frequency average and reducing ADC dynamic power(More)
This paper deals with the problem of clock skew errors in time-interleaved analog-to-digital converters. Deterministic sample-time errors between time-interleaved channels generate nonlinear distortion and degrade SFDR. We propose a fully digital calibration method that uses, on the one hand, adaptive FIR filters to reconstruct a correctly sampled signal(More)
Contribution à l'élaboration de méthodologies et d'outils d'aide à la conception de systèmes multi-technologiques Soutenance le 27 novembre 2003 devant le jury composé de A mes parents, à mes soeurs, à mon frère, et à mon épouse Houda 3 Ecole Nationale Supérieure des Télécommunications REMERCIEMENTS Le travail présenté dans cette thèse a été effectué au(More)
The ultra wide band UWB communications are based on lower than nanosecond pulses spread on an ultra wide frequency spectrum. In this article, we present the homodyne receiver and precisely the analog to digital converter ADC dimensioning used for UWB communications. At present, several techniques exist to generate the waveform and we have chosen the(More)