EAS Publications Series
Volume 37, 2009Astrophysics Detector Workshop 2008
|Page(s)||101 - 106|
|Published online||11 June 2009|
P. Kern (ed)
EAS Publications Series, 37 (2009) 101-106
Baseband feedback for SAFARI-SPICA using Frequency Domain Multiplexing
CESR, CNRS-Université de Toulouse, France
2 SRON, Utrecht, The Netherlands
3 Systematic, The Netherlands
Corresponding author: email@example.com
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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