Key result
A self- and mutually injection-locked radar system removed more than 85% of body motion artifacts, enabling accurate real-time monitoring of vital sign signals.
A novel self- and mutually injection-locked radar system effectively removes over 85% of body motion artifacts for real-time vital sign monitoring.
May enable motion-robust radar vital sign monitoring; leaves open prospective clinical validation.
This paper presents a system for monitoring vital signs that is based on a self- and mutually injection-locked radar architecture. To detect vital signs with reduced body motion artifacts, the system uses two voltage-controlled oscillators that are self-injection locked to themselves and mutually injection locked to each other. Additionally, the system uses two different gain antennas. These features cancel out most of the body motion artifacts while preserving the vital sign signals. In the experiments, more than 85% of the body motion artifacts are removed, so the vital sign signals can be accurately monitored in real time.
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Tang et al. (2016) studied this question. Self- and mutually injection-locked radar system was evaluated on Body motion artifact removal. A self- and mutually injection-locked radar system removed more than 85% of body motion artifacts, enabling accurate real-time monitoring of vital sign signals.
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