Abstract:
In one embodiment, a source device includes one or more tunable elements associated with an antenna. The source device is operable to modulate an impedance of one or more tunable elements based on a sequence of tuning vectors, measure a reference signal amplitude for each tuning vector, and determine field amplitudes for an array of reference points that circumscribe at least a portion of the source device based on the reference signal amplitude for each tuning vector. The source device is further operable to determine a target tuning vector that defines a target radiation pattern based on the field amplitudes, and transmit a target signal to a target device based on the target radiation pattern.
Abstract:
Described embodiments include a system and method. An antenna is configured to implement at least two selectable radiative electromagnetic field spatial distributions. Each selectable radiative electromagnetic field spatial distributions respectively has a bounding surface that describes a specified power density in the radiative electromagnetic field. A sensor circuit is configured to detect a presence of an object within the bounding surface of an implemented radiative electromagnetic field. A countermeasure circuit is configured to select a response to the detected presence of the object within the bounding surface of the implemented radiative electromagnetic field. A spatial distribution selector circuit is configured to select from the at least two selectable radiative electromagnetic field spatial distributions another radiative electromagnetic field spatial distribution (i) that includes a target device present within the bounding surface of the selected radiative electromagnetic field and (ii) that implements the selected response to the detected presence of the object.
Abstract:
Antenna systems and related methods are disclosed. An antenna system includes an antenna controller configured to operably couple to an array of electromagnetic (EM) scattering elements. The controller is configured to determine a performance parameter of the antenna system for a plurality of different combinations of different spatial holographic phases and effective mode indices having different modulation patterns corresponding thereto, and select one of the modulation patterns based on the performance parameter corresponding thereto. A method includes storing data indicating a modulation pattern determined based on a spatial holographic phase and an effective mode index for each of a plurality of different main beam angles from the antenna, and controlling the antenna to operate with a main beam pointed in each of the plurality of different main beam angles by controlling the antenna to operate in each modulation pattern corresponding to the plurality of main beam angles.
Abstract:
Surface scattering antennas provide adjustable radiation fields by adjustably coupling scattering elements along a wave-propagating structure. In some approaches, the scattering elements are complementary metamaterial elements. In some approaches, the scattering elements are made adjustable by disposing an electrically adjustable material, such as a liquid crystal, in proximity to the scattering elements. Methods and systems provide control and adjustment of surface scattering antennas for various applications.
Abstract:
Apparatus and systems are described that include physical media related to accepting at least one attribute associated with an individual from a licensed health care provider and/or presenting an output of an artificial sensory experience associated with a request to measure at least one effect of a bioactive agent on the attribute associated with individual.
Abstract:
Methods, computer program products, and systems are described that include accepting an indication of a schedule for administration of a bioactive agent to an individual and presenting an indication of an artificial sensory experience at least partly based on the accepting an indication of the schedule for administration of the bioactive agent to the individual.
Abstract:
Systems and methods for dynamically defending a site from lightning strikes are provided. The systems and methods involve dynamically altering electrostatic fields above the site and/or dynamically intervening in lightning discharge processes in the vicinity of the site.
Abstract:
Embodiments of a system including a remotely controlled reaction device and associated controller are described. Methods of use and control of the device are also disclosed. According to various embodiments, a reaction device is placed in an environment in order to perform a chemical reaction in an environment. Exemplary environments include a body of an organism, a body of water, or an enclosed volume of a fluid. In selected embodiments, a magnetic field, an electric field, or electromagnetic control signal may be used.
Abstract:
Avatars, methods, apparatuses, computer program products, devices and systems are described that carry out presenting at least one characteristic to at least one member of a population cohort; measuring at least one physiologic activity of the at least one member of the population cohort, the at least one physiologic activity proximate to the at least one presented characteristic; associating the at least one physiological activity with at least one mental state; and specifying at least one avatar attribute based on the at least one mental state.
Abstract:
Methods of controlling the operation of a device traveling in a body tube tree, including determining a time based on a signal from a timing device and performing an action based on the determined time, implemented with a control system located partially or fully on the lumen traveling device. Various actions can be performed by the device for, e.g., medical or therapeutic purposes. Machine-readable media including instructions for performing the methods are also described.