TY - GEN
T1 - A Ku-band CMOS FMCW radar transceiver with ring oscillator based waveform generation for snowpack remote sensing
AU - Kim, Yanghyo
AU - Tang, Adrian
AU - Liou, Kuo Nan
AU - Painter, Thomas H.
AU - Chang, Mau Chung Frank
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/10/4
Y1 - 2017/10/4
N2 - This paper presents a Ku-band (14-16 GHz) CMOS frequency modulated continuous-wave (FMCW) radar transceiver developed to measure snow depth for water management purposes and to aid in retrieval of snow water equivalent (SWE). An on-chip direct digital frequency synthesizer (DDFS) and digital-to-analog converter (DAC) digitally generates the chirping waveform which then drives a ring oscillator based Ku-Band phase-locked loop (PLL) to provide the final Ku-band FMCW signal. Employing a ring oscillator as oppose to a tuned inductor based oscillator (LC-VCO) allows the radar to achieve wider chirp bandwidth resulting in a higher axial resolution (7.5cm) which is needed to accurately quantify the snowpack profile. The demonstrated radar chip is fabricated in a 65nm CMOS process, and it consumes 250mW of power under 1.1V supply, making its payload requirements suitable for observations from a small UAV.
AB - This paper presents a Ku-band (14-16 GHz) CMOS frequency modulated continuous-wave (FMCW) radar transceiver developed to measure snow depth for water management purposes and to aid in retrieval of snow water equivalent (SWE). An on-chip direct digital frequency synthesizer (DDFS) and digital-to-analog converter (DAC) digitally generates the chirping waveform which then drives a ring oscillator based Ku-Band phase-locked loop (PLL) to provide the final Ku-band FMCW signal. Employing a ring oscillator as oppose to a tuned inductor based oscillator (LC-VCO) allows the radar to achieve wider chirp bandwidth resulting in a higher axial resolution (7.5cm) which is needed to accurately quantify the snowpack profile. The demonstrated radar chip is fabricated in a 65nm CMOS process, and it consumes 250mW of power under 1.1V supply, making its payload requirements suitable for observations from a small UAV.
KW - FMCW
KW - PLL
KW - Ring Oscillator
KW - Snow Depth Measurement
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U2 - 10.1109/MWSYM.2017.8058659
DO - 10.1109/MWSYM.2017.8058659
M3 - Conference contribution
AN - SCOPUS:85032466097
T3 - IEEE MTT-S International Microwave Symposium Digest
SP - 64
EP - 66
BT - 2017 IEEE MTT-S International Microwave Symposium, IMS 2017
T2 - 2017 IEEE MTT-S International Microwave Symposium, IMS 2017
Y2 - 4 June 2017 through 9 June 2017
ER -