Abstract: A device for monitoring a health parameter in a person is disclosed. The device includes a semiconductor substrate, at least one transmit antenna configured to transmit millimeter range radio waves over a 3D space below the skin surface of a person, multiple receive antennas configured to receive radio waves, the received radio waves including a reflected portion of the transmitted radio waves, wherein the semiconductor substrate includes circuits for processing signals received on the multiple receive antennas, wherein processing signals includes mixing signals of two different frequencies, and wherein the semiconductor substrate includes at least one output configured to output a signal that corresponds to a health parameter of a person in response to received radio waves.

Abstract: A method for monitoring a health parameter in a person is disclosed. The method involves transmitting radio waves below the skin surface of a person and across a range of stepped frequencies, receiving radio waves on a two-dimensional array of receive antennas, the received radio waves including a reflected portion of the transmitted radio waves across the range of stepped frequencies, generating data that corresponds to the received radio waves, wherein the data includes amplitude and phase data, deriving data from at least one of the amplitude and phase data, and determining a value that is indicative of a health parameter in the person in response to the derived data.

Abstract: A removable smartphone case is disclosed. The removable smartphone case includes a case body configured to receive a smartphone, a radio frequency (RF) front-end connected to the case body and including a semiconductor substrate, at least one transmit antenna configured to transmit radio waves below the skin surface of a person, and a two-dimensional array of receive antennas configured to receive radio waves, the received radio waves including a reflected portion of the transmitted radio waves, wherein the semiconductor substrate includes circuits configured to generate signals in response to the received radio waves, a digital baseband system configured to generate digital data in response to the signals, wherein the digital data is indicative of a health parameter of the person, and a communications interface configured to transmit the digital data generated by the semiconductor substrate from the removable smartphone case.

Abstract: A method for monitoring a health parameter in a person involves engaging an alignment feature of a health monitoring device with an alignment feature of an alignment element that is worn on the skin, transmitting radio waves from at least one transmit antenna of the health monitoring device below the skin surface of the person while the alignment feature of the health monitoring device is engaged with the alignment feature of the alignment element that is worn by the person, receiving radio waves on a two-dimensional array of receive antennas of the health monitoring device while the alignment feature of the health monitoring device is engaged with the alignment feature of the alignment element that is worn by the person, generating digital data that corresponds to the received radio waves, and determining a value that is indicative of a health parameter of the person in response to the digital data.

Abstract: A device for monitoring a health parameter of a person is disclosed. The device includes a device body, a radio frequency (RF) front-end connected to the device body and including a semiconductor substrate and an antenna array including at least one transmit antenna configured to transmit radio waves below the skin surface of a person and a two-dimensional array of receive antennas configured to receive radio waves, the received radio waves including a reflected portion of the transmitted radio waves, wherein the semiconductor substrate includes circuits configured to generate signals in response to the received radio waves, and an alignment feature integrated into the device body and configured to align the antenna array with an object.

Abstract: A method of charging multiple receivers, the method includes: (i) receiving, via the communication radio, first data that allows the transmitter to determine a locations for a first receiver and a second receiver, (ii) determining waveform features used to transmit wireless power waves focused at the location of the first receiver, (iii) determining waveform features used to transmit wireless power waves focused at the location of the second receiver, (iv) causing a first subset of antennas to transmit wireless-power waves having the first waveform features to create focused energy at the location of the first receiver and (v) causing a second subset of antennas to transmit wireless-power waves having the second waveform features to create focused energy at the second location of the second receiver, where transmitting the wireless-power waves having the first waveform features occurs while transmitting the wireless-power waves having the second waveform features.

Abstract: A method for operating a stepped frequency radar system is disclosed. The method involves performing stepped frequency scanning across a first frequency range using frequency steps of a first step size, the stepped frequency scanning performed using at least one transmit antenna and a two-dimensional array of receive antennas, changing from the first step size to a second step size, wherein the second step size is different from the first step size, and performing stepped frequency scanning across a second frequency range using the at least one transmit antenna and the two-dimensional array of receive antennas and using frequency steps of the second step size.

Abstract: A device for monitoring a health parameter of a person is disclosed. The device includes a semiconductor substrate including at least one transmit component and multiple receive components, at least one transmit antenna configured to transmit millimeter range radio waves over a 3D space below the skin surface of a person, and multiple receive antennas configured to receive radio waves, the received radio waves including a reflected portion of the transmitted radio waves, wherein the semiconductor substrate includes circuits for processing signals received on the multiple receive antennas, wherein the semiconductor substrate includes at least one output configured to output a signal that corresponds to a health parameter of a person in response to received radio waves, and wherein the at least one transmit antenna is collocated with the at least one transmit component and the multiple receive antennas are collocated with respective ones of the multiple receive components.

Abstract: A method for training a model for use in monitoring a health parameter in a person is disclosed. The method involves receiving control data that corresponds to a control element, wherein the control data corresponds to a health parameter of a person, receiving stepped frequency scanning data that corresponds to radio waves that have reflected from the control element, wherein the stepped frequency scanning data includes frequency and corresponding amplitude and phase data over a range of frequencies, generating training data by combining the control data with the stepped frequency scanning data in a time synchronous manner, and training a model using the training data to produce a trained model, wherein the trained model correlates stepped frequency scanning data to values that are indicative of a health parameter of a person.

Abstract: Methods for operating a wearable device are disclosed. An embodiment of a method for operating a wearable device involves generating blood pressure data from an optical sensor system of a wearable device, wherein the blood pressure data corresponds to a person wearing the wearable device, generating a pulse wave signal from an RF sensor system of the wearable device, wherein the pulse wave signal corresponds to a person wearing the wearable device, and generating a blood pressure value based on the blood pressure data from the optical sensor system and the pulse wave signal from the RF sensor system.

Abstract: A system for monitoring a health parameter in a person is disclosed. The system includes a frequency synthesizer configured to generate radio waves across a range of stepped frequencies, at least one transmit antenna configured to transmit the radio waves below the skin surface of a person, a two-dimensional array of receive antennas configured to receive radio waves, the received radio waves including a reflected portion of the transmitted radio waves, processing circuits configured to generate data that includes amplitude and phase data in response to the received radio waves, and means for determining a value that corresponds to a health parameter of the person in response to the amplitude and phase data.

Abstract: A wearable device includes an optical sensor system configured to generate blood pressure data corresponding to a person wearing the wearable device, a backside RF sensor system having an RF front-end including at least one transmit antenna and a two-dimensional array of receive antennas, the RF front-end configured to perform radio frequency scanning across a frequency range, the radio frequency scanning performed using the at least one transmit antenna and the two-dimensional array of receive antennas, a processor configured to generate digital data in response to the radio frequency scanning and to coherently combine the generated digital data across the two-dimensional array of receive antennas and across the range of radio frequencies to produce a pulse wave signal of the person, and means for generating blood pressure values based on the blood pressure data from the optical sensor system and the pulse wave signal from the backside RF sensor system.

Abstract: An embodiment of a method for generating training data for use in monitoring a health parameter of a person is disclosed. The method involves receiving a pulse wave signal that is generated from radio frequency scanning data that corresponds to radio waves that have reflected from below the skin surface of a person, wherein the radio frequency scanning data is collected through a two-dimensional array of receive antennas of a wearable device over a range of radio frequencies, extracting features from at least one of the pulse wave signal and a mathematical model generated in response to the pulse wave signal, receiving control data from an optical sensor system of the wearable device, wherein the control data corresponds to a blood pressure of a person wearing the wearable device, and labeling the extracted features with a corresponding blood pressure of the control data to generate training data.

Abstract: An example wireless power transmitter includes a ground plate, a conductive wire offset from the ground plate, and a signal-conveyance member. The conductive wire of the wireless power transmitter forms a loop antenna that is configured to radiate a radio frequency (RF) signal for wirelessly powering a receiver device. And the signal-conveyance member of the wireless power transmitter is configured to selectively feed a waveform to a connection point of a plurality of connection points along the conductive wire, wherein the waveform, when provided to the conductive wire, causes the loop antenna to radiate the RF signal.

Abstract: Embodiments of the present technology may include a method for monitoring a health parameter of a person, the method including receiving a pulse wave signal that is generated from radio frequency scanning data that corresponds to radio waves that have reflected from below the skin surface of a person. In some embodiments, the radio frequency scanning data is collected through a two-dimensional array of receive antennas over a range of radio frequencies, extracting features from at least one of the pulse wave signal and a mathematical model generated in response to the pulse wave signal, applying the extracted features to a machine learning engine that includes a trained model, and outputting from the machine learning engine an indication of a health parameter of the person in response to the extracted features.

Abstract: Embodiments of the present technology may include a radar system for a wearable health monitoring device, the radar system including a radio frequency (RF) front-end including at least one transmit antenna and a two-dimensional array of receive antennas, the RF front-end configured to perform radio frequency scanning across a frequency range, the radio frequency scanning performed using the at least one transmit antenna and the two-dimensional array of receive antennas, and a processor configured to generate digital data in response to the radio frequency scanning and to coherently combine the generated digital data across the two-dimensional array of receive antennas and across the range of radio frequencies to produce a pulse wave signal of the person, and to determine a value that is indicative of a blood glucose level in the person in response to the pulse wave signal.

Abstract: Embodiments of the present technology may include a system for monitoring a health parameter of a person, the system including an interface configured to receive data that corresponds to a digital pulse wave signal that is generated from radio frequency data and that corresponds to radio waves that have reflected from below the skin surface of a person. In some embodiments, the radio frequency data is collected through a two-dimensional array of receive antennas. Embodiments may also include a processor configured to determine a value that corresponds to a blood glucose level in the person in response to the data that corresponds to the digital pulse wave signal.

Abstract: Embodiments of the present technology may include a method for monitoring a physiological parameter in a person, the method including transmitting radio waves below the skin surface of a person and across a range of radio frequencies. Embodiments may also include receiving radio waves on a two-dimensional array of receive antennas, the received radio waves including a reflected portion of the transmitted radio waves across the range of radio frequencies. Embodiments may also include generating data that corresponds to the received radio waves. Embodiments may also include coherently combining the generated data across the two-dimensional array of receive antennas and across the range of radio frequencies to produce a pulse wave signal of the person.

Abstract: Embodiments of the present technology may include a method for monitoring a health parameter of a person, the method including generating radio frequency scanning data that corresponds to radio waves that have reflected from features below the skin of a person. In some embodiments, the radio frequency scanning data is generated through a two-dimensional array of receive antennas over a range of radio frequencies. Embodiments may also include coherently combining the generated radio frequency scanning data across the two-dimensional array of receive antennas and across the range of radio frequencies to produce a pulse wave signal of the person. Embodiments may also include determining a value that is indicative of a blood glucose level in the person in response to the pulse wave signal.

Abstract: Embodiments of the present technology may include a method for generating training data for use in monitoring a health parameter of a person, the method including receiving a pulse wave signal that is generated from radio frequency scanning data that corresponds to radio waves that have reflected from below the skin surface of a person. In some embodiments, the radio frequency scanning data is collected through a two-dimensional array of receive antennas over a range of radio frequencies. Embodiments may also include extracting features from at least one of the pulse wave signal and a mathematical model generated in response to the pulse wave signal. Embodiments may also include labeling the extracted features with a corresponding blood pressure to generate training data.