Frequency-tracking CW doppler radar solving small-angle approximation and null point issues in non-contact vital signs monitoring

Marco Mercuri; Yao Hong Liu; Ilde Lorato; Tom Torfs; Andre Bourdoux; Chris van Hoof

doi:10.1109/TBCAS.2016.2647560

Frequency-tracking CW doppler radar solving small-angle approximation and null point issues in non-contact vital signs monitoring

Marco Mercuri, Yao Hong Liu, Ilde Lorato, Tom Torfs, Andre Bourdoux, Chris van Hoof

Research output: Contribution to journal › Article › Academic › peer-review

24 Citations (Scopus)

Abstract

A Doppler radar operating as a Phase-Locked-Loop (PLL) in frequency demodulator configuration is presented and discussed. The proposed radar presents a unique architecture, using a single channel mixer, and allows to detect contactless vital signs parameters while solving the null point issue and without requiring the small angle approximation condition. Spectral analysis, simulations, and experimental results are presented and detailed to demonstrate the feasibility and the operational principle of the proposed radar architecture.

Original language	English
Article number	7888984
Pages (from-to)	671-680
Number of pages	10
Journal	IEEE Transactions on Biomedical Circuits and Systems
Volume	11
Issue number	3
DOIs	https://doi.org/10.1109/TBCAS.2016.2647560
Publication status	Published - 1 Jun 2017
Externally published	Yes

Keywords

DC offset
Doppler radar
non-contact sensing
null-point elimination
phase-locked loop
RF-based sensing
small-angle approximation
vital signs monitoring

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10.1109/TBCAS.2016.2647560

Cite this

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title = "Frequency-tracking CW doppler radar solving small-angle approximation and null point issues in non-contact vital signs monitoring",

abstract = "A Doppler radar operating as a Phase-Locked-Loop (PLL) in frequency demodulator configuration is presented and discussed. The proposed radar presents a unique architecture, using a single channel mixer, and allows to detect contactless vital signs parameters while solving the null point issue and without requiring the small angle approximation condition. Spectral analysis, simulations, and experimental results are presented and detailed to demonstrate the feasibility and the operational principle of the proposed radar architecture.",

keywords = "DC offset, Doppler radar, non-contact sensing, null-point elimination, phase-locked loop, RF-based sensing, small-angle approximation, vital signs monitoring",

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Frequency-tracking CW doppler radar solving small-angle approximation and null point issues in non-contact vital signs monitoring. / Mercuri, Marco; Liu, Yao Hong; Lorato, Ilde; Torfs, Tom; Bourdoux, Andre; van Hoof, Chris.

In: IEEE Transactions on Biomedical Circuits and Systems, Vol. 11, No. 3, 7888984, 01.06.2017, p. 671-680.

Research output: Contribution to journal › Article › Academic › peer-review

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AU - Lorato, Ilde

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AU - Bourdoux, Andre

AU - van Hoof, Chris

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KW - Doppler radar

KW - non-contact sensing

KW - null-point elimination

KW - phase-locked loop

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KW - small-angle approximation

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Frequency-tracking CW doppler radar solving small-angle approximation and null point issues in non-contact vital signs monitoring

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Keywords

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