TY - GEN
T1 - A portable doppler/FSK/FMCW multi-mode radar with analog DC offset cancellation for biomedical applications
AU - Wang, Jing
AU - Li, Changzhi
N1 - Publisher Copyright:
© 2019 The authors; USNC-URSI and IEEE will have full rights to publish, market, put on Xplore, etc.
PY - 2019/5/10
Y1 - 2019/5/10
N2 - This paper presents an integrated portable multi-mode radar system incorporating Doppler, frequency-shift keying (FSK), and frequency-modulated continuous-wave (FMCW) modes with an analog DC offset baseband cancellation circuit. The proposed radar system can be used for various biomedical applications such as non-contact vital signs monitoring, fall detection, and human tracking. A common problem of biomedical radar sensors is the DC offset presented at the output of the mixer caused by hardware imperfection and reflections from nearby stationary objects. This leads to signal distortion, baseband amplifier saturation, and dynamic range reduction. Therefore, an analog DC offset cancellation circuit is integrated to automatically and continuously remove the DC offset before baseband amplification. Experiment results of different modes are reported to demonstrate the multi-functionality of the proposed radar.
AB - This paper presents an integrated portable multi-mode radar system incorporating Doppler, frequency-shift keying (FSK), and frequency-modulated continuous-wave (FMCW) modes with an analog DC offset baseband cancellation circuit. The proposed radar system can be used for various biomedical applications such as non-contact vital signs monitoring, fall detection, and human tracking. A common problem of biomedical radar sensors is the DC offset presented at the output of the mixer caused by hardware imperfection and reflections from nearby stationary objects. This leads to signal distortion, baseband amplifier saturation, and dynamic range reduction. Therefore, an analog DC offset cancellation circuit is integrated to automatically and continuously remove the DC offset before baseband amplification. Experiment results of different modes are reported to demonstrate the multi-functionality of the proposed radar.
UR - http://www.scopus.com/inward/record.url?scp=85066619574&partnerID=8YFLogxK
U2 - 10.23919/USNC-URSI-NRSM.2019.8712903
DO - 10.23919/USNC-URSI-NRSM.2019.8712903
M3 - Conference contribution
AN - SCOPUS:85066619574
T3 - 2019 United States National Committee of URSI National Radio Science Meeting, USNC-URSI NRSM 2019
BT - 2019 United States National Committee of URSI National Radio Science Meeting, USNC-URSI NRSM 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2019 United States National Committee of URSI National Radio Science Meeting, USNC-URSI NRSM 2019
Y2 - 9 January 2019 through 12 January 2019
ER -