ADC Resolution for Simultaneous Reception of Two Signals with High Dynamic Range

Baptiste Laporte-Fauret (1, 2) , Guillaume Ferré (1) , Dominique Dallet (1) , Bryce Minger (2) , Loïc Fuché (2)

1 IMS - Laboratoire de l'intégration, du matériau au système
2 THALES [France]

This paper discusses a new limit for the dynamic range of an Analog to Digital Converter (ADC) in presence of two simultaneous signals to process. An encountered method to determine the minimum required ADC resolution is analysed and compared to the well known formula established for a single received signal. A new approach is proposed to evaluate the resolution when the ADC is fed with a weak and a strong signal. Compared to previous works, we show the required resolution is enhanced by the presence of two signals through a spectral representation and mathematical developments.

Mots clés: signal carrying; digitization; quantization noise; resolution; dynamic range; ADC

Domaines: Traitement du signal et de l'image [eess.SP]

Baptiste Laporte-Fauret, Guillaume Ferré, Dominique Dallet, Bryce Minger, Loïc Fuché. ADC Resolution for Simultaneous Reception of Two Signals with High Dynamic Range. IEEE International Conference on Electronics Circuits and Systems (ICECS), Dec 2018, Bordeaux, France. ⟨hal-01894568⟩