Advertisement

Multiple Technology Choices for a Mixed Analog-Digital Space Radio-Astronomy Spectrometer

  • J.-L. Noullet
  • L. Ravera
  • A. Ferreira
  • D. Lagrange
  • M. Giard
  • M. Torres
Chapter

Abstract

For analysing the sub-millimeter radiation received by a astronomy satellite, a hybrid analog-digital spectrometer is planned. As a critical part of this instrument, a specific digital signal processing chip set is proposed. A first strategy is based on a GaAs MESFET chip expected to perform 52 giga-operations per second with a 400 MHz clock frequency. While this strategy gave encouraging results and remains the main line of the project, a second strategy based on parallelism on silicon only is under study, and the opportunity of working simultaneously on two opposite approaches is discussed.

Keywords

Reference Architecture Full Custom Digital CMOS CMOS Chip Parallel Core 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [1]
    W. J. Wilson, “Radiometer Spectrometers for Space”, in “Coherent Detection at Millimeter Wavelength and Applications”, pp 163–179, Nova Science Publishers, New York, 1991.Google Scholar
  2. [2]
    S. Weinreb, “Analog-Filter Digital-Correlator Hybrid Spectrometer”, IEEE Transactions on Instruments and Measurement, IM-34, No4, pp 670675, December 1985.Google Scholar
  3. [3]
    B. F. C. Cooper, “Correlators with Two-bit quantization”, Australian Journal of Physics, Vol 23, pp. 521–527, 1970.Google Scholar
  4. [4]
    J.F. Lopez, V. de Armas, J.A. Montiel, “VLSI GaAs Experience Using H-GaAs II Technology”, proc. 4th Eurochip Workshop, Toledo, Oct. 1993.Google Scholar
  5. [5]
    K. Eshraghian, R. Sarmiento, P.P. Carballo, A. Nunez, “Speed-Area-Power Optimization for DCFL and SDCFL Class of Logic Using Ring Notation”, Microprocessing and Microprogramming, Vol 32, pp 75–82, 1991.CrossRefGoogle Scholar
  6. [6]
    R. Sarmiento, P.P. Carballo, A. Nunez, “High Speed Primitives for Hardware Accelerators for DSP in GaAs Technology”, IEE proceedings-G, Vol. 139, No2, April 1992.Google Scholar
  7. [7]
    Noullet J.L., Giard M., Crete E., Lagrange D., Mayvial J.Y., Torres M., Ferreira A., “Digital GaAs MESFET Chip for a Radio-Astronomy Spectrometer”, European Design and Test Conference EDTC’95, Paris, March 1995. (This paper obtained the “Best Academic Asic Award” at EDTC’95)Google Scholar

Copyright information

© Springer Science+Business Media Dordrecht 1997

Authors and Affiliations

  • J.-L. Noullet
    • 1
  • L. Ravera
    • 2
  • A. Ferreira
    • 1
  • D. Lagrange
    • 2
  • M. Giard
    • 2
  • M. Torres
    • 3
  1. 1.LESIA — Institut National des Sciences AppliqueesToulouseFrance
  2. 2.Centre d’Etude Spatiale des RayonnementsToulouseFrance
  3. 3.Institut de Radio-Astronomie MillimétriqueSaint-Martin d’HèresFrance

Personalised recommendations