TY - GEN
T1 - A 2.6GS/s Spectrometer System in 65nm CMOS for Spaceborne Telescopic Sensing
AU - Zhang, Yan
AU - Kim, Yanghyo
AU - Tang, Adrian
AU - Kawamura, Jon
AU - Reck, Theodore
AU - Chang, M. C.Frank
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/4/26
Y1 - 2018/4/26
N2 - 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.
AB - 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.
KW - ADC
KW - DSP
KW - FFT
KW - PLL
KW - SoC
KW - sensing
KW - spectrometer
KW - system-on-chip
UR - http://www.scopus.com/inward/record.url?scp=85054791732&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85054791732&partnerID=8YFLogxK
U2 - 10.1109/ISCAS.2018.8351690
DO - 10.1109/ISCAS.2018.8351690
M3 - Conference contribution
AN - SCOPUS:85054791732
T3 - Proceedings - IEEE International Symposium on Circuits and Systems
BT - 2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018 - Proceedings
T2 - 2018 IEEE International Symposium on Circuits and Systems, ISCAS 2018
Y2 - 27 May 2018 through 30 May 2018
ER -