Abstract
This chapter presents a bandpass sigma–delta ADC design in superconducting technology. We studied an architecture based on Josephson junctions VHDL–AMS modeling. We proceed by analyzing the standard linear model and proposed different hierarchical model based on functional analyzing. To simplify comparator behaviour and simulations we assimilate SFQ pulses to ideal rectangular pulses to specify ADC performance. Josephson junction modeling is based on writing of RCSJ electrical model with accordance to VHDL–AMS language. Each ADC functional element is dissociated and simulated to validate its behaviour. Pulses duration is directly a physical parameter obtained by technology. We give relations between ADC performance (SNR) to the comparator SFQ pulses form and duration with normalized physical parameters.
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Guelaz, R., Desgreys, P., Loumeau, P. (2009). Wide-Band Sigma–Delta ADC Design in Superconducting Technology. In: Radetzki, M. (eds) Languages for Embedded Systems and their Applications. Lecture Notes in Electrical Engineering, vol 36. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-9714-0_7
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DOI: https://doi.org/10.1007/978-1-4020-9714-0_7
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