Nxp B.v.

Freescale Semiconductor,inc.

René Geraets

Ryan Haoyun Wu

Oswald Moonen

Klaas Brink

Dongyin Ren

Patrick Niessen

Wendi Zhang

Ewout Brandsma

Marco Jan Gerrit Bekooij

Aly Aamer Syed

Aliaksei Vladimirovich Sedzin

Ruud Hendricksen

Theophiel Y B Van Daele

Aspects of the present disclosure are directed to radar communications with disparate pulse repetition intervals, as may be implemented with radar transmission, receiver and processing circuitry. As may be utilized in accordance with one or more embodiments herein, time division multiplexing (TDM) multi-input multi-output (MIMO) radar signals are transmitted by transmitting sets of successive radar signals, each set having a pulse repetition interval (PRI) that is different than the PRI of sets of radar signals transmitted in another one of the sets. Positional characteristics of a target may be ascertained based on the PRI used in each of the sets and on phase characteristics of ones of the radar signals reflected from the target.

Radar communications with disparate pulse repetition intervals

Aspects of the present disclosure are directed toward apparatuses and/or methods involving the communication of radar signals. Certain aspects involve communicating time division multiplexing (TDM) multi-input multi-output (MIMO) radar signals, having pulses with a chirp interval time (CIT) that is different for respective chirps. Positional characteristics of a target may be ascertained based upon both the CIT between each chirp in the communicated radar signals and the time between each corresponding chirp in received ones of the signals reflected by the target. Communication of the radar signals may involve utilizing a combination of antennas to provide a virtual aperture.

Radar communications with offset chirp interval time

Exemplary aspects are directed to circuitry that assesses and differentiates a set of targeted data and updates a high-level bin with a numerical value indicating the number of data elements that compared successfully with a predefined value range defined for each bin. A cumulative sum of the high-level bins may then be calculated. Following, a target threshold may be compared to the cumulative sum at each bin and then providing an indication upon discovering a cumulative sum exceeding the threshold. The targeted data may be further refined by changing (through circuitry or other intervention) the predefined range values and then reprocessing the targeted data.

Efficient processing for differentiating signals

Embodiments of an apparatus are disclosed. In an embodiment, a power receiver unit is disclosed. The power receiver unit includes a power pick-up unit, a communication modulator, and a filter. The power pick-up unit receives a wireless power signal. The communication modulator applies a modulation to the received wireless power signal. The filter suppresses a load signal from a load of the wireless charge receiver to prevent interference with the modulation.

Wireless charger receiver-side communication interference elimination

A power supply circuit can be configured to generate a supply voltage that provides power to the apparatus. A signal generation circuit can be configured to generate a radio frequency (RF) charging signal. An amplification circuit can be configured to amplify the RF charging signal using the supply voltage and to present the amplified charging signal to a power transmitting coil for transmission of wireless power to a remote device. A communication circuit can be configured to detect amplitude variations in the RF charging signal; detect variations in a voltage level of the supply voltage; adjust the detected amplitude variations in the RF charging signal to compensate for detected variations in a voltage level; and decode data represented by the amplitude variations in the RF charging signal based upon the adjusted amplitude variations.

Voltage supply compensation

There is provided a network node for use in a wireless sensor network, said network node being arranged to determine communication activities of the network node in different spatial directions extending from the network node, and said network node comprising at least one visual indicator being arranged to provide a visual indication of said communication activities. A wireless sensor network comprising such a network node is also disclosed, as is a method facilitating positioning a network node in a sensor network.

Network node, wireless sensor network and method for facilitating positioning of a network node in a wireless sensor network

A method for performing foreign object detection in an inductive wireless power transfer system is disclosed. In the embodiment, the method involves obtaining measurements from a base station of a wireless power transfer system during charging and determining transmitter energy loss in a power transmitter, P, using the obtained measurements, wherein the transmitter energy loss, P, is a function of at least Vand P, wherein Vis proportional to the voltage amplitude across the capacitor of an LC tank circuit in a power transmitter and Pis the total power supplied to the power transmitter. The method also involves detecting the presence of a foreign object in response to the estimated transmitter energy loss.

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Eindhoven, Netherlands

René Geraets