Baseband feedback for SAFARI-SPICA using Frequency Domain Multiplexing
- Resource Type
- Authors
- L. Ravera; B. J. van Leeuwen; A. Bounab; P. A. J. de Korte; B. Monna; J. van der Kuur; A. Cros; R. Mossel; A. C. T. Nieuwenhuizen
- Source
- EAS Publications Series. 37:101-106
- Subject
- Physics
Amplifier
Frequency domain multiplexing
Bandwidth (signal processing)
Astrophysics::Instrumentation and Methods for Astrophysics
General Engineering
Astronomy and Astrophysics
Spica
Feedback loop
Standard procedure
Space and Planetary Science
Electronic engineering
Baseband
Transition edge
- Language
- ISSN
- 1638-1963
1633-4760
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 t d , 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.