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A Time Domain Multiplexer for Large Arrays of High Impedance Low Temperature Bolometers

Journal of Low Temperature Physics volume 151, pages 940–945 (2008)Cite this article

Abstract

We present a time domain multiplexer for high impedance bolometer arrays. It is based on the use of quantum-point-contact high-electron-mobility-transistors (QPC-HEMTs) as low temperature switches and a cold FET amplifier with programmable auto-zero-circuit. We employ the high bolometer resistance (about 10 MΩ) in parallel with a capacitance as antialiasing filter. A new generation of QPC-HEMT reaches a noise level close to the expected one. We will use this approach to multiplex the pixels of a mm-wave bolometric camera destined for the 30 meter IRAM telescope at Pico Veleta.

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Author information

Author notes

  1. S. J. C. Yates

    Present address: SRON, Sorbonnelaan 2, 3584 CA, Utrecht, The Netherlands

  2. S. Leclercq

    Present address: IRAM, Domaine Universitaire de Grenoble, 300 rue de la Piscine, 38406, Saint Martin d’ Hères, France

Authors and Affiliations

  1. Institut NEEL, CNRS & Université Joseph Fourier, BP 166, 38042, Grenoble Cedex 9, France

    A. Benoit, S. J. C. Yates, P. Camus, T. Durand, C. Hoffmann, S. Leclercq & A. Monfardini

  2. CNRS-LPN, Route de Nozay, 91460, Marcoussis, France

    E. Grémion, A. Cavanna, B. Etienne, U. Gennser & Y. Jin

Authors
  1. A. Benoit
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  2. S. J. C. Yates
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  3. E. Grémion
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  4. P. Camus
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  5. T. Durand
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  6. C. Hoffmann
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  7. S. Leclercq
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  8. A. Monfardini
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  9. A. Cavanna
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  10. B. Etienne
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  11. U. Gennser
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  12. Y. Jin
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Corresponding author

Correspondence to C. Hoffmann.

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Benoit, A., Yates, S.J.C., Grémion, E. et al. A Time Domain Multiplexer for Large Arrays of High Impedance Low Temperature Bolometers. J Low Temp Phys 151, 940–945 (2008). https://doi.org/10.1007/s10909-008-9770-1

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  • DOI: https://doi.org/10.1007/s10909-008-9770-1

Keywords

  • LTD
  • Low temperature electronics
  • Detector arrays
  • Multiplexing

PACS

  • 07.57.Kp
  • 84.30.-r