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Issue EAS Publications Series
Volume 37, 2009
Astrophysics Detector Workshop 2008
Page(s) 101 - 106
DOI 10.1051/eas/0937012
Published online 11 June 2009

Astrophysics Detector Workshop 2008
P. Kern (ed)
EAS Publications Series, 37 (2009) 101-106
DOI: 10.1051/eas/0937012

Baseband feedback for SAFARI-SPICA using Frequency Domain Multiplexing

A. Bounab1, P. de korte2, A. Cros1, J. van der Kuur2, B.J. van Leeuwen2, B. Monna3, R. Mossel2, A. Nieuwenhuizen2 and L. Ravera1

1  CESR, CNRS-Université de Toulouse, France;
2  SRON, Utrecht, The Netherlands
3  Systematic, The Netherlands

ayoub.bounab@cesr.fr

Published online: 11 June 2009

Abstract
We report on the performance of the digital baseband feedback circuit developed to readout and process signals from arrays of transition edge sensors for SPICA-SAFARI in frequency domain multiplexing (FDM). The standard procedure to readout the SQUID current amplifiers is to use a feedback loop (flux-locked loop: FLL). However the achievable FFL bandwidth is limited by the cable transport delay td, which makes standard feedback inconvenient. A much better approach is to use baseband feedback. We have developed a model of the electronic readout chain for SPICA-SAFARI instrument by using an Anlog-digital co-simulation based on Simulink-System Generator environment.



© EAS, EDP Sciences 2009


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