Abstract: Apparatus and methods are described including deriving a subject's heart rate from in-phase and the quadrature signals received by a radar. The in-phase and quadrature signals are processed to generate two or more outputs using two or more respective methods. For each of the two or more outputs, for each of a plurality of time segments, the subject's heart rate is derived from the filtered signal, and quality scores are assigned to the subject's heart rate as derived for each of the plurality of time segments from each of the two or more outputs. At least partially based upon the quality scores, the subject's heart rate is derived using the output of one of the methods. Other applications are also described.

Abstract: Method and system for deriving interbeat interval (IB1) measurement of subject. A radar device receives a reflection radar signal reflected from subject. A signal portion of reflection radar signal at a range of subject is extracted, the signal portion collected over predefined intervals and consisting of an in-phase component and a quadrature component. The signal portion is filtered by applying a complex valued continuous wavelet transform (CWT) to derive a time domain ballistocardiograph (BCG) signal with cyclically repeating features, such that the time displacement between repeating features of the derived BCG signal is representative of a first heartbeat interval measurement of subject. At least one segment of the BCG signal over a selected time duration may be identified using a matrix profile technique, such that the time displacement between successive identified segments is representative of a second heartbeat interval measurement. Radar signal may be THz/millimeter-wave and FMCW radar signal.

Abstract: Method and system for deriving interbeat interval (IB1) measurement of subject. A radar device receives a reflection radar signal reflected from subject. A signal portion of reflection radar signal at a range of subject is extracted, the signal portion collected over predefined intervals and consisting of an in-phase component and a quadrature component. The signal portion is filtered by applying a complex valued continuous wavelet transform (CWT) to derive a time domain ballistocardiograph (BCG) signal with cyclically repeating features, such that the time displacement between repeating features of the derived BCG signal is representative of a first heartbeat interval measurement of subject. At least one segment of the BCG signal over a selected time duration may be identified using a matrix profile technique, such that the time displacement between successive identified segments is representative of a second heartbeat interval measurement. Radar signal may be THz/millimeter-wave and FMCW radar signal.

Abstract: Apparatus and methods are described including deriving a subject's heart rate from in-phase and the quadrature signals received by a radar. The in-phase and quadrature signals are processed to generate two or more outputs using two or more respective methods. For each of the two or more outputs, for each of a plurality of time segments, the subject's heart rate is derived from the filtered signal, and quality scores are assigned to the subject's heart rate as derived for each of the plurality of time segments from each of the two or more outputs. At least partially based upon the quality scores, the subject's heart rate is derived using the output of one of the methods. Other applications are also described.

Abstract: The present invention provides a method and a portable non-invasive sub-THz and THz (THz) radar system for remotely detecting physiological parameters of a subject, comprising: one or more transmission means for transmitting THz signals to a subject predefined tissue; one or more reception means for receiving a THz signal of the subject, the THz signals being a reflection of the THz signal from subject tissue thereby, receiving at least one physiological parameter change; and microprocessor means coupled and configured to communicate with the transmitter means and/or the reception means for receiving and processing the reflected signals.

Abstract: The present invention provides a system and a method for denoising motion artifacts from vital signs signals comprising steps of receiving one or more reflected signals from at least one subject, generating a time sequence buffer of reflected signals of predefined duration for vital signals processing, source separation and a component selection, and estimating and tracking vital signs of the source separation and a component selection.

Abstract: An antenna pattern integrated-on-chip for transmitting and/or receiving sub-terahertz and terahertz (THZ) signal& The antenna pattern comprising: a first conductor having a bi-circular structure; a second conductor having a bi-circular structure connected to the first bi-circular structure. The bi-circular structures comprising a first conductive circular lobe having a radius (Rx) and a second circular lobe having a radius (Rc), such that said Rx?Rc. The first bi-circular and the second bi-circular characterized by at least one port thereby, having an area of intersection between the first bi-circular and the second lei-circular, forming an ultra-wideband (UWB) frequency response of more than about 100% bandwidth.

Abstract: An imaging sensor for accepting terahertz signals, including a die made of a dielectric material, one or more antennas for receiving terahertz signals, positioned on top of the die or in an upper layer of the die, each antenna having a CMOS detector electrically coupled to the antenna and positioned in the die below the antenna, a metal shield layer in the die below the antennas and above the CMOS detectors, shielding the CMOS detector from interference signals, a shielding layer under the die comprising a back metal coating and/or a layer of silver epoxy glue for attaching the bottom of the die to a lead frame.