Abstract: Techniques control a utility vehicle. Such techniques involve storing electric power in a lithium battery of the utility vehicle. Such techniques further involve operating a motor controller of the utility vehicle in a normal mode in which the motor controller provides electric power from a lithium battery of the utility vehicle to an electric motor of the utility vehicle to turn one or more ground engaging members of the utility vehicle. Such techniques further involve, after operating the motor controller in the normal operating mode, operating the motor controller in a walkaway mode in which the motor controller configures the electric motor to provide braking torque.

Abstract: Approaches are described for generating suggestions for new nodes or new relationships in a knowledge graph based on content of data assets represented by existing nodes in the knowledge graph. The knowledge graph is defined by nodes connected by edges. A method includes determining that a data asset represented by a root node of a knowledge graph has been changed, where the changed data asset is represented by a version node connected to the root node. The changed data asset is processed, including: identifying one or more candidate terms in the changed data asset, and comparing each candidate term with each of one or more existing terms from data assets of the knowledge graph other than the changed data asset to obtain (i) one or more of the candidate terms that do not correspond to any existing term or (ii) one or more candidate terms that each corresponds to a respective existing term that is not related to the version node representing the changed data asset.

Abstract: A diversity antenna module comprising a first radiating element adapted to operate with a first transceiver circuit operating in at least one band and a second radiating element adapted to operate with a second transceiver circuit operating in at least one band. The first radiating element is disposed along a first side of a substrate and the second radiating element is disposed along a second side of the substrate, wherein the first and second sides are substantially perpendicular to each other, the first and second radiating elements being spatially dispersed from each another by a distance.

Abstract: Real-time calibration of a tunable matching network that matches the dynamic impedance of an antenna in a radio frequency receiver system. The radio frequency receiver system includes two non-linear equations that may be solved to determine the reflection coefficient of the antenna. The tunable matching network is repeatedly perturbed and the power received by the antenna is measured after each perturbation at the same node in the matching network. The measured power values are used by an optimizer in converging to a solution that provides the reflection coefficient of the antenna. The reflection coefficient of the antenna may be used to determine the input impedance of the antenna. The elements of the matching circuit are then adjusted to match the input impedance of the antenna.

Abstract: Embodiments are directed to a balun structure comprising: a monopole antenna, and a microstrip coupled to the monopole antenna and comprising a ground plane modified to include at least two arms. Embodiments are directed to a balun structure comprising: a monopole antenna, and a microstrip coupled to the monopole antenna using a stepwise tapered microstrip feed.

Abstract: An authentication method, system and device are provided to continuously collect dynamic personal identification data (DPID) samples through a user device by using one or more sensors to continuously collect biometric and location data samples associated with the user and then securely transfer the DPID samples to a central authentication server where attributes of the DPID samples may be captured and incorporated as part of a challenge-response pair which requests an arbitrarily generated N-tuple of the DPID samples from a predetermined time interval from the user device that is unique to the user and dynamic based on the sensed data and the time-interval of collection.

Abstract: A system that incorporates teachings of the subject disclosure may include, for example, determining a first voltage standing wave ratio (VSWR), selecting a VSWR circle from among a group of VSWR circles based on the first VSWR, identifying a group of sets of tuning settings for variable reactance elements of a matching network of the communication device where the identifying of the group of sets of tuning settings is based on each set of tuning settings of the group of sets of tuning settings being associated with the VSWR circle, and selecting a set of tuning settings from among the group of sets of tuning settings responsive to a second VSWR determined for the set of tuning settings satisfying a VSWR threshold. Other embodiments are disclosed.

Abstract: A system that incorporates teachings of the subject disclosure may include, for example, identifying a usage mode of the communication device, running a calibration session that includes adjusting a starting point for tuning of the matching network based on a categorized history of previous tuning search paths and based on the usage mode where the categorized history of previous tuning search paths is generated based on monitoring previous tuning search paths during previous tuning and based on monitoring previous usage modes during the previous tuning, and adjusting a tuning search path for the tuning of the matching network based on the categorized history of previous tuning search paths and the usage mode where the adjusting of the starting point and the adjusting of the tuning search path reduces a tuning search time and provides a unique solution for the tuning. Other embodiments are disclosed.

Abstract: A diversity antenna module comprising a first radiating element adapted to operate with a first transceiver circuit operating in at least one band and a second radiating element adapted to operate with a second transceiver circuit operating in at least one band. The first radiating element is disposed along a first side of a substrate and the second radiating element is disposed along a second side of the substrate, wherein the first and second sides are substantially parallel to each other, the first and second radiating elements being spatially dispersed from each another by a distance.

Abstract: A system that incorporates teachings of the subject disclosure may include, for example, identifying a usage mode of the communication device, running a calibration session that includes adjusting a starting point for tuning of the matching network based on a categorized history of previous tuning search paths and based on the usage mode where the categorized history of previous tuning search paths is generated based on monitoring previous tuning search paths during previous tuning and based on monitoring previous usage modes during the previous tuning, and adjusting a tuning search path for the tuning of the matching network based on the categorized history of previous tuning search paths and the usage mode where the adjusting of the starting point and the adjusting of the tuning search path reduces a tuning search time and provides a unique solution for the tuning. Other embodiments are disclosed.

Abstract: Embodiments are directed to a substrate integrated waveguide (SIW) antenna structure comprising: a first layer configured to route a signal, at least a second layer configured for antenna use coupled to the first layer, and a SIW antenna flared in the E-plane. Embodiments are directed to a method comprising: fabricating a first layer configured to route a signal, fabricating at least a second layer configured for antenna use, coupling the first layer and the at least a second layer, and flaring a substrate integrated waveguide (SIW) antenna in the E-plane.

Abstract: Embodiments are directed to a balun structure comprising: a monopole antenna, and a microstrip coupled to the monopole antenna and comprising a ground plane modified to include at least two arms. Embodiments are directed to a balun structure comprising: a monopole antenna, and a microstrip coupled to the monopole antenna using a stepwise tapered microstrip feed.

Abstract: A system that incorporates teachings of the subject disclosure may include, for example, determining a first voltage standing wave ratio (VSWR), selecting a VSWR circle from among a group of VSWR circles based on the first VSWR, identifying a group of sets of tuning settings for variable reactance elements of a matching network of the communication device where the identifying of the group of sets of tuning settings is based on each set of tuning settings of the group of sets of tuning settings being associated with the VSWR circle, and selecting a set of tuning settings from among the group of sets of tuning settings responsive to a second VSWR determined for the set of tuning settings satisfying a VSWR threshold. Other embodiments are disclosed.

Abstract: Real-time calibration of a tunable matching network that matches the dynamic impedance of an antenna in a radio frequency receiver system. The radio frequency receiver system includes two non-linear equations that may be solved to determine the reflection coefficient of the antenna. The tunable matching network is repeatedly perturbed and the power received by the antenna is measured after each perturbation at the same node in the matching network. The measured power values are used by an optimizer in converging to a solution that provides the reflection coefficient of the antenna. The reflection coefficient of the antenna may be used to determine the input impedance of the antenna. The elements of the matching circuit are then adjusted to match the input impedance of the antenna.

Abstract: A diversity antenna module comprising a first radiating element adapted to operate with a first transceiver circuit operating in at least one band and a second radiating element adapted to operate with a second transceiver circuit operating in at least one band. The first radiating element is disposed along a first side of a substrate and the second radiating element is disposed along a second side of the substrate, wherein the first and second sides are substantially parallel to each other, the first and second radiating elements being spatially dispersed from each another by a distance.

Abstract: A diversity antenna module comprising a first radiating element adapted to operate with a first transceiver circuit operating in at least one band and a second radiating element adapted to operate with a second transceiver circuit operating in at least one band. The first radiating element is disposed along a first side of a substrate and the second radiating element is disposed along a second side of the substrate, wherein the first and second sides are substantially perpendicular to each other, the first and second radiating elements being spatially dispersed from each another by a distance.

Abstract: An authentication method, system and device are provided to continuously collect dynamic personal identification data (DPID) samples through a user device by using one or more sensors to continuously collect biometric and location data samples associated with the user and then securely transfer the DPID samples to a central authentication server where attributes of the DPID samples may be captured and incorporated as part of a challenge-response pair which requests an arbitrarily generated N-tuple of the DPID samples from a predetermined time interval from the user device that is unique to the user and dynamic based on the sensed data and the time-interval of collection.

Abstract: Methods, devices, and systems for controlling a beamforming antenna with reconfigurable parasitic elements is provided.

Abstract: Transmission of data from a portable communication device to a base station via a radio frequency signal uses a plurality of modulation and coding schemes and a protocol that has recurring frames. Each frame has a plurality of transmission slots, different numbers of which can be used to transmit data. When it is desired to transmit data a higher rate than was used previously, an attempt is made to increase the number transmission slots being used. If doing so, produces a transmission results in a specific absorption rate limit being exceeded, then the modulation and coding scheme is changed to one having a greater data coding rate. The power level and the number transmission slots then are set so that the data transmission does not exceed the specific absorption rate limit. The data is then transmitted by the portable communication device.

Abstract: Methods, devices, and systems for controlling a beamforming antenna with reconfigurable parasitic elements is provided.