Abstract: A Faraday cage enclosure for a mobile device with a portion that aligns with a display of the mobile device simultaneously substantially attenuate EM radiation to non-damaging amplitudes and is transparent to visible light in an optical spectrum, an EMP protection circuit electrically connected between the external charging and data port and the internal charging and data port, and a passive repeater configured to EM-couple with an antenna of the mobile device and relay signals to and from the antenna of the mobile device.

Abstract: A Faraday enclosure for substantially attenuating microwave-frequency fields outside the Faraday enclosure. Information to and from the circuitry inside the Faraday enclosure is accessible by input pinholes and output pinholes, respectively. A sensor positioned outside of the Faraday enclosure and aligned with the first input pinhole senses microwave-frequency fields. A receiver inside the Faraday enclosure aligned with the input pinhole and the sensor responds to the sensor.

Abstract: Heatsink has a plurality of cross-connected pathways that create areas of turbulent airflow which is useful for quickly dissipating heat in the heatsink. The cross-connected pathways can include vertically extending pathways that extend from the baseplate to the top surface of the single piece of material with an increasing volume away from the baseplate toward the top surface of the single piece of material and horizontally extending pathways are oriented in a plurality of rows where a diameter of the horizontally extending pathways increases in each row of the plurality of rows from the baseplate.

Abstract: Directional antennas comprising substantially identical radiation patterns separated in a horizontal plane by an index angle. A line of bearing to an emitter is determined by a ratio of the power level of an EM signal received by the directional antennas and comparing it to a lookup table to determine an angle off of the boresight of the directional antenna with the highest received power level of the EM signal toward the directional antenna with the second-highest received power level of the EM signal that the emitter of the EM signal is located.

Abstract: A Faraday cage enclosure for a mobile device with a portion that aligns with a display of the mobile device simultaneously substantially attenuate EM radiation to non-damaging amplitudes and is transparent to visible light in an optical spectrum, an EMP protection circuit electrically connected between the external charging and data port and the internal charging and data port, and a passive repeater configured to EM-couple with an antenna of the mobile device and relay signals to and from the antenna of the mobile device.

Abstract: Directional antennas comprising substantially identical radiation patterns separated in a horizontal plane by an index angle. A line of bearing to an emitter is determined by a ratio of the power level of an EM signal received by the directional antennas and comparing it to a lookup table to determine an angle off of the boresight of the directional antenna with the highest received power level of the EM signal toward the directional antenna with the second-highest received power level of the EM signal that the emitter of the EM signal is located.

Abstract: A light-based dental treatment system includes a handle generator having a generator housing and at least one light element configured to generate therapeutic light. The handle generator includes an alignment collet having a light passage extending along a movable interior collet profile. At least one delivery shaft assembly is selectively coupled with the handle generator. The at least one delivery shaft assembly includes a delivery shaft having proximal and distal shaft profile and a proximal light port. A distal light port of the delivery shaft is configured to deliver therapeutic light from the delivery shaft to a treatment location. The interior collet profile of the alignment collet is configured to grasp the delivery shaft and align the proximal light port with the at least one light element.

Abstract: A limiter comprising of a step-up circuit with an input node and an output node for electrically stepping up an output signal at the output node from an input signal at the input node. A threshold switch circuit is connected to the step-up circuit for limiting peak voltages of the output signal from the step-up circuit.

Abstract: A hub, an extensible vertical member pivotally attached to the hub for movement between a stowed position and an erect position, and at least three extensible horizontal members each pivotally attached to the hub for movement between a stowed position and an erect position. The vertical member and the horizontal members are each extensible such that a ratio of the extensible length of the vertical member to the extensible length of the horizontal members is adjustable for required stability in high wind applications.

Abstract: An image display to provide a realistic 3D stereoscopic image of a desired scene. The display device is comprised of directional pixels. Each directional pixel has a plurality of facets having a constrained viewing angle. Each facet has a point source of light that emits light with a controllable luminescence and hue. In this regard, each facet of the directional pixel has a constrained viewing angle and independent luminance and hue.

Abstract: An antenna includes at least one dipole antenna comprising a pair of monopole antennas each monopole antenna includes an adjustable conductive element with one end electrically combined to an inductor and another end combined to an insulator. A support structure combined to the at least one dipole antenna positions one end of each monopole at an elevation higher than the other end of the monopole.

Abstract: A first signal generator for generating a first AC current signal and a second signal generator for generating a second AC current signal. A first combiner is coupled to the first signal generator and the second signal generator for combing the first AC current signal and the second AC current signal into a probe signal for applying directly to the unit under test. A receiver for detecting intermodulation distortion in the unit under test.

Abstract: An impedance matching network between a transmitter and an antenna. The impedance matching network comprises of a watt meter coupled to the transmitter for measuring a standing wave ratio (“SWR”). A first unbalanced to unbalanced transformer (“first unun”) with an impedance ratio of N:1 is selectively coupled in series with the watt meter. A microprocessor is coupled to the watt meter for determining iteratively whether the first unun lowers the standing wave ratio (“SWR”) in response to switching the first unun in and out of a series connection with the antenna.

Abstract: A far-field antenna characterization system for characterizing a far-field antenna pattern of a target antenna. An unmanned aircraft system (“UAS”) with a flight control system receives preprogrammed flight instructions for maneuvering the UAS within the far-field antenna pattern of the target antenna. A sensing antenna mounted to the UAS senses the far-field antenna pattern of the target antenna. A power measurement sensor provides a power level signal indicative thereof. A position measurement sensor provides a position signal for the UAS. The data logger associates the power level signal with the position signal at multiple measurement points to create a power density pattern for the far-field antenna pattern.

Abstract: An impedance matching network between a transmitter and an antenna. The impedance matching network comprises of a watt meter coupled to the transmitter for measuring a standing wave ratio (“SWR”). A first unbalanced to unbalanced transformer (“first unun”) with an impedance ratio of N:1 is selectively coupled in series with the watt meter. A microprocessor is coupled to the watt meter for determining iteratively whether the first unun lowers the standing wave ratio (“SWR”) in response to switching the first unun in and out of a series connection with the antenna.

Abstract: A radio system provides multi-antenna coverage of an area in an efficient and affordable manner. The radio system includes a base radio to transmit and communicate with and through multiple antennas spaced throughout a substantially radio opaque structure through a single transmission line. The base radio has an antenna port that connects the base radio to a transmission line. Several directional couplers are spaced in line with the transmission line corresponding with the areas where antenna coverage is needed.

Abstract: A system includes an emitter of electromagnetic radiation combined to the object and aligned with a detector for detecting the electromagnetic radiation from the emitter. A processor in communication with the detector is calibrated to recognize a change in alignment between the electromagnetic radiation from the emitter and the detector. The processor translates the change in alignment to the amount of force applied to the object.

Abstract: An image display to provide a realistic 3D stereoscopic image of a desired scene. The display device is comprised of directional pixels. Each directional pixel has a plurality of facets having a constrained viewing angle. Each facet has a point source of light that emits light with a controllable luminescence and hue. In this regard, each facet of the directional pixel has a constrained viewing angle and independent luminance and hue.

Abstract: The presence of an RF signal in an expected location emanating from a mobile device within the expected location is detected by first antenna positioned in the expected location. False alarm discrimination is achieved by the square ratio of the operator's cellphone signal close to the antenna(s) versus the blocked external signals from much greater distance. A comparator compares the RF signal emanating from the mobile device in the expected location with a threshold signal and determines whether the mobile device is operating, and, if so, an alarm responsive to the comparator is triggered.

Abstract: A image converter receives and mixes a plurality of input signals with an impulse signal to generate an alias signal spectrum. An analog post-processor receives the alias signal spectrum and separates out a plurality of bandlimited signals and recombines them into a transmit signal. A processor monitors a power level of the plurality of input signals and dynamically, separately modifies one of the plurality of bandlimited signals with a command signal to the analog post-processor in response to a change in power level in the corresponding input signal.