TY - JOUR
T1 - A Ku -Band CMOS FMCW Radar Transceiver for Snowpack Remote Sensing
AU - Kim, Yanghyo
AU - Reck, Theodore J.
AU - Alonso-Delpino, Maria
AU - Painter, Thomas H.
AU - Marshall, Hans Peter
AU - Bair, Edward H.
AU - Dozier, Jeff
AU - Chattopadhyay, Goutam
AU - Liou, Kuo Nan
AU - Chang, Mau Chung Frank
AU - Tang, Adrian
PY - 2018/5
Y1 - 2018/5
N2 - This paper presents a Ku -band (14-16 GHz) CMOS frequency-modulated continuous-wave (FMCW) radar transceiver developed to measure dry-snow depth for water management purposes and to aid in retrieval of snow water equivalent. An on-chip direct digital frequency synthesizer and digital-to-analog converter digitally generates a chirping waveform which then drives a ring oscillator-based Ku -Band phase-locked loop to provide the final Ku -band FMCW signal. Employing a ring oscillator as opposed to a tuned inductor-based oscillator (LC-VCO) allows the radar to achieve wide chirp bandwidth resulting in a higher axial resolution (7.5 cm), which is needed to accurately quantify the snowpack profile. The demonstrated radar chip is fabricated in a 65-nm CMOS process. The chip consumes 252.4 mW of power under 1.1-V supply, making its payload requirements suitable for observations from a small unmanned aerial vehicle.
AB - This paper presents a Ku -band (14-16 GHz) CMOS frequency-modulated continuous-wave (FMCW) radar transceiver developed to measure dry-snow depth for water management purposes and to aid in retrieval of snow water equivalent. An on-chip direct digital frequency synthesizer and digital-to-analog converter digitally generates a chirping waveform which then drives a ring oscillator-based Ku -Band phase-locked loop to provide the final Ku -band FMCW signal. Employing a ring oscillator as opposed to a tuned inductor-based oscillator (LC-VCO) allows the radar to achieve wide chirp bandwidth resulting in a higher axial resolution (7.5 cm), which is needed to accurately quantify the snowpack profile. The demonstrated radar chip is fabricated in a 65-nm CMOS process. The chip consumes 252.4 mW of power under 1.1-V supply, making its payload requirements suitable for observations from a small unmanned aerial vehicle.
KW - CMOS
KW - frequency-modulated continuous-wave (FMCW)
KW - phase-locked loop (PLL)
KW - range correlation
KW - ring oscillator
KW - snow depth measurement
UR - http://www.scopus.com/inward/record.url?scp=85042369797&partnerID=8YFLogxK
U2 - 10.1109/TMTT.2018.2799866
DO - 10.1109/TMTT.2018.2799866
M3 - Article
AN - SCOPUS:85042369797
SN - 0018-9480
VL - 66
SP - 2480
EP - 2494
JO - IEEE Transactions on Microwave Theory and Techniques
JF - IEEE Transactions on Microwave Theory and Techniques
IS - 5
ER -