Abstract: Methods and apparatus processing acceleration data of a sensing device to determine whether the device is located on an aircraft during landing or taking off or in the air or landed. Based on a state of the sensing device, such as take-off, the sensing device is prevented from transmitting signals. In embodiments, the sensing device compares network identifying information stored in memory of the sensing device and locally received network identifying information. For at least one positive comparison of the network identifying information stored in the memory and the locally received network identifying information, the sensing device is prevented from transmitting signals. In embodiments, the acceleration data and the network identifying information provide independent ways to selectively prevent the sensing device from transmitting signals.

Abstract: Circuits and methods for achieving high linearity, high efficiency power amplifiers, including digital predistortion (DPD) and pulse cancellation in switched-state RF power amplifier systems are described.

Abstract: Methods and apparatus for transitioning sensor devices to a signal collection mode for receiving and storing signal information for given frequencies and locations and transmitting the stored signal information to a remote site. The transmitted signal information can be processed to generate a spectrum map based upon the transmitted signal information. In embodiments, the transmitted signal information can be processed to identify signal anomalies.

Abstract: Methods and apparatus for configuring a sensor device in accordance with a first configuration defining data collection for a plurality of sensors and defining when the collected data for the sensors is transmitted to a remote network. The sensor device can be coupled to a shipping container for collecting environmental data as the shipping container is en route to a destination. The sensor device can receive a transition signal from the remote network instructing the sensor device to transition to a second configuration with different transmission parameters.

Abstract: Methods and apparatus for configuring a sensor device in accordance with a first configuration defining data collection for a plurality of sensors and defining when the collected data for the sensors is transmitted to a remote network. The sensor device can coupled to a shipping container for collecting environmental data as the shipping container is en route to a destination. The sensor device can receive a transition signal from the remote network instructing the sensor device to transition to a second configuration with different transmission parameters.

Abstract: Vehicles and methods of navigating vehicles comprise at least three receiver antennae configured to receive radio frequency (RF) signals from one or more RF-transmitting antennae coupled to an object, receiver circuitry coupled to the receiver antennae to acquire the RF signals and to determine timing information from the acquired RF signals, memory storing information related to fixed distances between each receiver antenna and each other receiver antenna, a processor configured to determine a relative position of the vehicle with respect to the one or more RF-transmitting antennae based on the stored information related to the fixed distances between each receiver antenna and each other receiver antenna and on the timing information determined by the receiver circuitry, and a control system configured to control operation of the vehicle in response to the relative position of the vehicle with respect to the one or more RF-transmitting antennae determined by the processor.

Abstract: Vehicles and methods of navigating vehicles comprise at least three receiver antennae configured to receive radio frequency (RF) signals from one or more RF-transmitting antennae coupled to an object, receiver circuitry coupled to the receiver antennae to acquire the RF signals and to determine timing information from the acquired RF signals, memory storing information related to fixed distances between each receiver antenna and each other receiver antenna, a processor configured to determine a relative position of the vehicle with respect to the one or more RF-transmitting antennae based on the stored information related to the fixed distances between each receiver antenna and each other receiver antenna and on the timing information determined by the receiver circuitry, and a control system configured to control operation of the vehicle in response to the relative position of the vehicle with respect to the one or more RF-transmitting antennae determined by the processor.

Abstract: Systems and methods improve virtual reality and augmented reality functionality for mobile devices using radio frequency (RF) signals transmitted by a tracked device and received at four or more spatially separated antennae. These antennae are connected, wirelessly or through wired connections, to a base station. Through RF signal time of arrival information acquired at the antennae, the base station can continuously determine accurate position information of the tracked device, without lighting or line of sight limitations experienced by camera and other optical systems. As the position of the RF-transmitting tracked device is registered within a virtual environment produced by an interactive software program in communication with (or part of) the base station, the virtual viewpoint of the tracked device is controlled to reflect the relative position and orientation of the tracked device with respect to the virtual environment produced by the software program and displayed on a view screen.

Abstract: Circuits and methods for achieving high linearity, high efficiency power amplifiers, including digital predistortion (DPD) and pulse cancellation in switched-state RF power amplifier systems are described.

Abstract: Systems and methods improve virtual reality and augmented reality functionality for mobile devices using radio frequency (RF) signals transmitted by a tracked device and received at four or more spatially separated antennae. These antennae are connected, wirelessly or through wired connections, to a base station. Through RF signal time of arrival information acquired at the antennae, the base station can continuously determine accurate position information of the tracked device, without lighting or line of sight limitations experienced by camera and other optical systems. As the position of the RF-transmitting tracked device is registered within a virtual environment produced by an interactive software program in communication with (or part of) the base station, the virtual viewpoint of the tracked device is controlled to reflect the relative position and orientation of the tracked device with respect to the virtual environment produced by the software program and displayed on a view screen.

Abstract: Circuits and methods for achieving high linearity, high efficiency power amplifiers, including digital predistortion (DPD) and pulse cancellation in switched-state RF power amplifier systems are described.

Abstract: Methods and apparatus for transitioning sensor devices to a signal collection mode for receiving and storing signal information for given frequencies and locations and transmitting the stored signal information to a remote site. The transmitted signal information can be processed to generate a spectrum map based upon the transmitted signal information. In embodiments, the transmitted signal information can be processed to identify signal anomalies.

Abstract: Methods and apparatus for configuring a sensor device in accordance with a first configuration defining data collection for a plurality of sensors and defining when the collected data for the sensors is transmitted to a remote network. The sensor device can coupled to a shipping container for collecting environmental data as the shipping container is en route to a destination. The sensor device can receive a transition signal from the remote network instructing the sensor device to transition to a second configuration with different transmission parameters.

Abstract: A radio frequency (RF) power amplifier system or transmitter includes one or more power amplifiers and a controller that is configured to adjust amplitudes and phases of RF input signals of the one or more power amplifiers and supply voltages applied to the one or more power amplifiers. In embodiments where multiple power amplifiers are used, a combiner may be provided to combine outputs of the power amplifiers.

Abstract: An electronic device with multiple sensors can report the various sensor readings and measurements using wireless connectivity to a remote computer system operating a sensing as a service platform and a web application.

Abstract: Vehicles and methods of navigating vehicles comprise at least three receiver antennae configured to receive radio frequency (RF) signals from one or more RF-transmitting antennae coupled to an object, receiver circuitry coupled to the receiver antennae to acquire the RF signals and to determine timing information from the acquired RF signals, memory storing information related to fixed distances between each receiver antenna and each other receiver antenna, a processor configured to determine a relative position of the vehicle with respect to the one or more RF-transmitting antennae based on the stored information related to the fixed distances between each receiver antenna and each other receiver antenna and on the timing information determined by the receiver circuitry, and a control system configured to control operation of the vehicle in response to the relative position of the vehicle with respect to the one or more RF-transmitting antennae determined by the processor.