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Short-range radar systems are noncontact devices that are attracting much attention from the RF/microwave community. In particular, they are being applied in healthcare contexts, ranging from hospital to indoor and outdoor environments, e.g., for monitoring of vital signs and/or tracking of human activities. This article reviews the standard architectures for short-range biomedical radars and presents...
Short-range radars are becoming important RF systems in plenty of wireless-sensing applications, such as those in industrial, transportation, security, health, and commercial scenarios. Doppler sensors are very sensitive to vibrations, whereas frequency-modulated continuous-wave (FMCW) radars enable absolute-range discrimination. This article proposes a compact low-cost radar architecture that multiplexes...
In noncontact vital-sign-monitoring applications, the cancelation of the random body movement (RBM) becomes critical for a proper tracking. When using Doppler radars, this RBM suppression has been typically carried out through phase measurements obtained from two opposite sides of the human body. In this work, the employment of two frequency-modulated continuous-wave (FMCW) radars to deal with the...
Radar-based human tracking can be applied to indoor healthcare scenarios, such as fall detection of elderly people. In this work, a portable frequency-modulated continuous-wave (FMCW) radar prototype for indoor human tracking is presented. The system provides absolute-range detection capabilities. Furthermore, it uses a novel approach — not requiring the sharing of the generation and acquisition clocks...
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