A 2.6GS/s Spectrometer System in 65nm CMOS for Spaceborne Telescopic Sensing

Yan Zhang, Yanghyo Kim, Adrian Tang, Jon Kawamura, Theodore Reck, Mau-Chung Chang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

10 Scopus citations

Abstract

A fully integrated spectrometer system-on-a-chip (SoC) is demonstrated for the first time to support the back-end processing of spaceborne telescopic sensing. Like with all space-borne instruments, payload size, weight, and power are critically restricted by the launch vehicle capacity and available solar power. A custom integrated circuit (IC) approach naturally prevails over FPGA-based discrete solutions in these areas. Rather than concocting a system out of circuitries intended for different applications, as in [2], each component in this work is optimized along the operating principle of radio-frequency (RF) spectroscopy. Running at 2.6 GHz, the presented spectrometer features a three-bit flash ADC, an 8192-point polyphase filter bank (PFB), a 2048-point FFT processor, and a billion-count accumulator (ACC), all running off clocks derived from an integrated phase locked loop (PLL). The entire system consumes a peak power of 650 mW. It achieves the highest level of integration and best efficiency among current spectrometer solutions, and serves as the baseline component for upcoming NASA astrophysics spectroscopy missions.

Original languageEnglish
Title of host publication2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538648810
DOIs
StatePublished - 26 Apr 2018
Event2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018 - Florence, Italy
Duration: 27 May 201830 May 2018

Publication series

NameProceedings - IEEE International Symposium on Circuits and Systems
Volume2018-May
ISSN (Print)0271-4310

Conference

Conference2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018
CountryItaly
CityFlorence
Period27/05/1830/05/18

Keywords

  • ADC
  • DSP
  • FFT
  • PLL
  • SoC
  • sensing
  • spectrometer
  • system-on-chip

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    Zhang, Y., Kim, Y., Tang, A., Kawamura, J., Reck, T., & Chang, M-C. (2018). A 2.6GS/s Spectrometer System in 65nm CMOS for Spaceborne Telescopic Sensing. In 2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018 - Proceedings [8351690] (Proceedings - IEEE International Symposium on Circuits and Systems; Vol. 2018-May). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISCAS.2018.8351690