Abstract: Apparatus and methods provide predistortion for a phased array. Radio frequency (RF) sample signals from phased array elements are provided along return paths and are combined by a hardware RF combiner. Phase shifters are adjusted such that the RF sample signals are phase-aligned when combined. Adaptive adjustment of predistortion for the amplifiers of the phased array can be based on a signal derived from the combined RF sample signals.

Abstract: Systems and methods involving nanomaterial-based electrodes, such as supercapacitor and battery electrodes that can be flexible, are described.

Abstract: According to some aspects, there is provided a microelectromechanical systems (MEMS) device wherein one or more components of the MEMS device exhibit attenuated motion relative to one or more other moving components. The MEMS device may comprise a substrate; a proof mass coupled to the substrate and configured to move along a resonator axis; and a first shuttle coupled to the proof mass and comprising one of a drive structure configured to drive the proof mass along the resonator axis or a sense structure configured to move along a second axis substantially perpendicular to the resonator axis in response to motion of the proof mass along the resonator axis, wherein displacement of at least a first portion of the proof mass is attenuated relative to displacement of the first shuttle and/or a second portion of the proof mass.

Abstract: Chopping techniques that suppress fold-back into the signal band and spreads the offset across the spectrum are described. By using various techniques, chopping may be performed with a variable frequency clock to spread the offset across the signal spectrum. Spreading the offset across the signal spectrum means that there are no longer large spurious tones at a few frequencies.

Abstract: An electromagnetic connector is disclosed that is configured to form a first magnetic circuit portion comprising a first core member and a first coil disposed of the first core member. The electromagnetic connector is configured to mate with a second electromagnetic connector, where the second electromagnetic connector is configured to form a second magnetic circuit portion comprising a second core member and a second coil disposed of the second core member. The first core member and the second core member are configured to couple the first coil to the second coil with a magnetic circuit formed from the first magnetic circuit portion and the second magnetic circuit portion when the electromagnetic connector is mated with the second electromagnetic connector. The magnetic circuit is configured to induce a signal in the first coil when the second coil is energized.

Abstract: Time of Flight (ToF) depth image processing methods are disclosed for resolving corruption of ToF depth images. In ToF depth imaging, the light can travel paths of different lengths before returning to the pixel. Thus, the light hitting the pixel can have travelled different distances, and the distance obtained from an estimation procedure assuming a single distance may be spurious. Systems and methods are disclosed for including a time-of-flight imager and processor which resolves the multiple paths, and outputs the multiple depths at each pixel.

Abstract: An electromagnetic connector is disclosed that is configured to form a first magnetic circuit portion comprising multiple coils disposed about a first core member. The electromagnetic connector is configured to mate with a second electromagnetic connector that is configured to form a second magnetic circuit portion comprising a coil disposed about a second core member. When the electromagnetic connector is mated with the second electromagnetic connector, the first core member and the second core member are configured to couple the multiple coils of the electromagnetic connector to the coil of the second electromagnetic connector with a magnetic circuit formed from the first magnetic circuit portion and the second magnetic circuit portion. The magnetic circuit is configured to induce a signal in a first coil of the multiple coils and the coil of the second electromagnetic connector when a second coil of the multiple coils is energized.

Abstract: An image processing system having on-the-fly calibration uses the placement of the imaging sensor and the light source for calibration. The placement of the imaging sensor and light source with respect to each other affect the amount of signal received by a pixel as a function of distance to a selected object. For example, an obstruction can block the light emitter, and as the obstruction is positioned an increasing distance away from the light emitter, the signal level increases as light rays leave the light emitters, bounce off the obstruction and are received by the imaging sensor. The system includes a light source configured to emit light, and an image sensor to collect incoming signals including reflected light, and a processor to determine a distance measurement at each of the pixels and calibrate the system.

Abstract: A power supply is disclosed for an industrial control system or any system including a distributed power supply network. In embodiments, the power supply comprises: a battery module including a battery cell and a battery monitor configured to monitor the battery cell; and a self-hosted server operatively coupled with the battery module, the self-hosted server being configured to receive diagnostic information from the battery monitor and provide network access to the diagnostic information. In implementations, the diagnostics stored by the self-hosted server can be broadcast to or remotely accessed by enterprise control/monitoring systems, application control/monitoring systems, or other remote systems via a secured network (e.g., secured access cloud computing environment).

Abstract: A data acquisition system comprises a signal processing chain including an analog-to-digital converter (ADC) circuit configured to: produce a digital output from an input signal; detect a specified signal feature of the input signal; and change an operating condition of an additional circuit of the signal processing chain in response to detecting the signal feature of the input signal.

Abstract: A cap for use with devices, such as sensors. The cap includes protrusions on its underside, to restrict the movement of a liquid or a gel placed under cap. The protrusions may take the form of walls or pillars, depending on the application. As such, the cap retains the liquid or gel in a specified position on the device. For example, an electrochemical sensor may require a liquid electrolyte to remain in place over one or more electrodes. The protrusions may not extend far enough to touch the device, but rather leave a small gap. However, because of the surface tension of the liquid, the liquid generally stays within the protrusions.

Abstract: A rate of change of current sensor includes two measurement coils, arranged such that the turns of the first and second measurement coils are interleaved. The rate of change of current sensor further comprises two return coils, arranged to progress in an opposite direction to the measurement coils. The coils form loops and progress substantially around a target measurement conductor. This ensures that the two measurement coils both receive the same electrostatic coupling from external conductors which are not the target of the measurement operation. Further, the two measurement coils are arranged such that the first coil and the second coil are, on average, the same distance to the current-carrying conductor of interest.

Abstract: A bootstrapped switch circuit coupled to a timing circuit. The bootstrapped switch circuit comprises a charge pump coupled to the timing circuit. The bootstrapped switch circuit also comprises a logic circuit coupled to the output of the charge pump and the timing circuit. The logic circuit is capable of generating multiple control signals which can independently control the turn-on of switches in the voltage path between the inputs and outputs of the bootstrapped switch circuit.

Abstract: The present disclosure provides a magnetic multi-turn sensor comprising a continuous coil of magnetoresistive elements and a method of manufacturing said sensor. The continuous coil is formed on a substrate such as a silicon wafer that has been fabricated so as to form a trench and bridge arrangement that enables the inner and outer spiral to be connected without interfering with the magnetoresistive elements of the spiral winding in between. Once the substrate has been fabricated with the trench and bridge arrangement, a film of the magnetoresistive material can be deposited to form a continuous coil on the surface of the substrate, wherein a portion of the coil is formed in the trench and a portion of the coil is formed on the bridge.

Abstract: Disclosed is an audio signal processing method implemented by an audio system with internal and external sensors. The internal sensor measures acoustic signals propogating internally to a user's head. The external sensor measures acoustic signals propagating externally to the user's head. The method includes: producing first and second audio signals by measuring simultaneously acoustic signals reaching the internal and external sensors, respectively; filtering the second audio signal by a noise matching filter matching a second noise signal affecting the second audio signal with a first noise signal affecting the first audio signal, wherein the first noise signal and the second noise signal correspond to a same noise acoustic signal originating outside the user's head and measured by respectively the internal and external sensors, thereby producing a filtered second audio signal including a matched second noise signal; and mixing the filtered second audio signal and the first audio signal.

Abstract: Techniques are provided for containing magnetic fields generated by an integrated switching package and for reducing electromagnetic interference generated from an integrated switching package.

Abstract: This disclosure relates to multi-phase oscillators for electronic systems. An example system includes multiple level translator circuits and a ring oscillator circuit that includes multiple outputs. Each level translator circuit includes a first input transistor, a second input transistor, and an output. The ring oscillator circuit includes multiple outputs, and each output of the ring oscillator has a different phase. An output of the ring oscillator is coupled to only one input transistor of a level translator circuit, and the other input transistor of the level translator circuit is coupled to an output of another level translator circuit.

Abstract: Systems and methods related to serial communication devices are provided. An example integrated circuit (IC) device includes interface circuitry coupled to a two-wire serial communication bus having a serial clock (SCL) line and a serial data (SDA) bus line. The IC device further includes bus stuck recovery circuitry to monitor for a local SDA fault condition at the IC device based on a number of clock cycles during which an internal SDA signal (e.g., generated by the IC device) drives the SDA bus line to a first signal state, the clock cycles based on a clock signal received from the SCL line; and responsive to the local SDA fault condition, release the SDA bus line independent of the internal SDA signal, where the SDA bus line is in a second signal state different from the first signal state based on the release.

Abstract: In an optical detection system, a coded transmission scheme can be used to provide scene illumination. For example, a transmitter can include transmit elements that can be controlled individually or in groups to provide specified modulated (e.g., on-off-keyed) waveforms corresponding to specified transmit code sequences. Light reflected or scattered by an object can be detected by an optical receiver, such as a single-pixel detector. Contributions to the received optical signal corresponding to the respective transmit code sequences can be separated using a correlation-based technique, even when such contributions overlap in time. Regions of a field-of-regard illuminated by ones or groups of the transmit elements can be selected or adjusted, such as to provide controllable spatial (e.g., angular) selectivity of which portions of the field-of-regard are illuminated by particular transmit signals.

Abstract: A wireless communication system includes a network manager configured to wirelessly communicate with a plurality of wireless nodes of a wireless network. The network manager and at least one wireless node include a transceiver connected to transmit and receive wireless communication via an antenna. The network manager and/or the wireless node include a cognitive engine configured to receive information regarding an environment of the wireless network as input and, in response, generate configuration data as output. Subsequent communication on the wireless network is updated using the configuration data.