Abstract
In medical and personal health systems for vital sign monitoring, contact-free remote detection is favourable compared to wired solutions. For example, they help to avoid severe pain, which is involved when a patient with burned skin has to be examined. Continuous wave (CW) radar systems have proven to be good candidates for this purpose. In this paper a monolithic millimetre-wave integrated circuit (MMIC) based CW radar system operating in the W-band (75–110 GHz) at 96 GHz is presented. The MMIC components are custom-built and make use of 100 nm metamorphic high electron mobility transistors (mHEMTs). The radar system is employing a frequency multiplier-by-twelve MMIC and a receiver MMIC both packaged in split-block modules. They allow for the determination of respiration and heartbeat frequency of a human target sitting in 1 m distance. The analysis of the measured data is carried out in time and frequency domain and each approach is shown to have its advantages and drawbacks.
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Diebold, S., Ayhan, S., Scherr, S. et al. A W-Band MMIC Radar System for Remote Detection of Vital Signs. J Infrared Milli Terahz Waves 33, 1250–1267 (2012). https://doi.org/10.1007/s10762-012-9941-7
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DOI: https://doi.org/10.1007/s10762-012-9941-7