Abstract: A metamaterial resonator structure having a size for resonating a predetermined frequency band. The resonator structure includes one or more dielectric slabs each having a top surface and a bottom surface. A conductive resonator element is configured on the top surface of each dielectric slab and has a crescent shape including a center portion and opposing rounded end portions defining a gap therebetween, where the center portion has a wider dimension then the end portions so that a width of the element gradually tapers from the center portion to the end portions, and where the conductive element has a diameter that is a fraction of a wavelength of the frequency band. Several dielectric slabs can be stacked on top of each other, where each slab has a different size and each conductive resonator element is a different size so that each resonator resonates a different portion of the frequency band.

Abstract: A method of making an electrical structure having a foam housing is set forth. The foam housing includes an interior surface forming a conductive cavity adapted to carry energized waveforms therethrough. An electrical component of the electrical structure is integrally formed with the interior surface as the foam housing of the structure is assembled. The method includes the steps of depositing a plating material into a mold, pouring a foam polymer into the mold and removing the plated foam structure from the mold without etching the section from the mold. The method further includes steps of forming a metallic form into a planar structure, filling the open pores of the foam with a material such as photo-resist, machining a cavity from the foam, electroplating the cavity in the foam then removing the photo-resist material.

Abstract: A clock recovery circuit for providing clock recovery from a burst signal that is periodically present and absent in a noisy channel. The recovery circuit includes an outer main tracking second-order phase locked loop (PLL) having an analog phase detector, a digital loop filter, and an analog/digital hybrid numerically controlled oscillator (NCO) that operates so that the clock recovery frequency is “frozen” to its last value from the previous burst and the phase detector is disabled during the gaps between data bursts. The NCO is implemented with an inner loop PLL that operates as a high resolution synthesizer having a low internal control bandwidth that preserves VCO phase noise. The outer main loop achieves a higher control bandwidth through direct tuning of the inner loop VCO with the outer loop tuning signal.

Abstract: One example includes a terrain profile system. A data store stores map data of a geographic region of interest and DTED. A route input system facilitates user inputs associated with defining a planned flight path of an aircraft between two points on a map associated with the map data and with defining flight characteristic data of the aircraft. A terrain profile controller defines a terrain signature associated with a topography of terrain features of the geographic region of interest along the planned flight path based on the DTED and a planned altitude of the aircraft along the planned flight path based on the flight characteristic data. A display system displays a terrain profile comprising the terrain signature, the planned altitude relative to the terrain signature, and a real-time location of the aircraft superimposed on the planned altitude based on real-time location data associated with the aircraft.

Abstract: A gyroscope sensor is provided that comprises a resonator including a stem extending along an axis and a shell extending from the stem. The shell includes a hemispherical portion extending from the stem and a cylindrical portion extending from the hemispherical portion. The cylindrical portion includes an outer surface and an inner surface and terminates at an axial end surface that is perpendicular to the outer surface and the inner surface. The resonator further comprises an inner cylindrical substrate that extends along an axis and includes a set of inner electrodes arranged annularly about the axis, and a passage that extends along the axis through a central region of the inner cylindrical substrate. The stem extends through the passage to position the inner cylindrical substrate within the inner surface of the cylindrical portion of the resonator forming gaps between the set of inner electrodes and the inner surface.

Abstract: One embodiment describes a Josephson transmission line (JTL) system. The system includes a plurality of JTL stages that are arranged in series. The system also includes a clock transformer comprising a primary inductor configured to propagate an AC clock signal and a secondary inductor arranged in a series loop with at least two of the plurality of JTL stages. The clock transformer can be configured to propagate a single flux quantum (SFQ) pulse to set a respective one of the plurality of JTL stages in response to a first phase of the AC clock signal and to reset the respective one of the plurality of JTL stages in response to a second phase of the AC clock signal that is opposite the first phase.

Abstract: One example includes a superconducting bidirectional current driver. The current driver includes a first direction superconducting latch that is activated in response to a first activation signal and a second direction superconducting latch that is activated in response to a second activation signal. The second direction superconducting latch is activated to provide a first current path of an input current through the first direction superconducting latch and through a bidirectional current load in a first direction. The first direction superconducting latch is activated to provide a second current path of the input current through the second direction superconducting latch and through the bidirectional current load in a second direction opposite the first direction.

Abstract: A method for sending messages through the atmosphere. The method includes sending the messages to an intended recipient, such as an aircraft, on a data link over an operating frequency at or near an atmospheric absorption band, where the operating frequency is selected to be closer to or farther from the absorption band to control the attenuation of the messages in the atmosphere so that the intended recipient is able to receive the messages, but unintended recipients are unable to receive the messages or jamming signals are unable to jam the messages.

Abstract: One example includes a switching power converter circuit. The circuit includes a gate driver configured to generate at least one switching signal in response to a feedback signal. The circuit also includes a feedback stage configured to generate the feedback signal based on an amplitude of an output voltage at an output. The circuit further includes a power stage including at least one switch and a transformer. The at least one switch can be controlled via the respective at least one switching signal to provide a primary current through a primary winding of the transformer to induce a secondary current through a secondary winding of the transformer to generate the output voltage. The power stage further includes a self-driven synchronous rectifier stage coupled to the secondary winding to conduct the secondary current from a low voltage rail through the secondary winding.

Abstract: An apparatus for selectively increasing a wing area of an aircraft having a fuselage with an interior space includes an inflatable wing moveable between a stowed condition located in the interior space and a deployed condition located outside the interior space. A plurality of reels is secured to the aircraft. A plurality of suspension lines connects the wing to the reels. At least one reel is operable to unwind a corresponding suspension line to allow the wing to inflate to the deployed condition exclusively by ram air generated by movement of the aircraft. A method of use for a deployable wing is also provided.

Abstract: An adaptive navigation system for airborne, ground and dismount applications. The system performs adaptive fusion of all sensed signals, information sources, and databases that may be available on a single or multiple cooperative platforms to provide optimal Positioning, Navigation, and Timing (PNT) state. To reduce error building over time, the system incorporates the concept of geo-registration fusion into the ANAGDA filter. The architecture of the ANAGDA filter consists of user/application configurable functionalities in hierarchical layers. The sensing layer senses the environment and contains the required databases such as surveyed landmarks, and Digital Terrain Elevation Data/Digital Elevation Model (DTED/DEM). The processing layer has a Smart Sensor Resource Manager which is a performance-based sensor/feature selection module. The measurement abstraction layer isolates the filter from hardware specifics.

Abstract: A method is provided of forming a superconductor device interconnect structure. The method includes forming a first high temperature dielectric layer overlying a substrate, forming a base electrode in the first high temperature dielectric layer with the base electrode having a top surface aligned with the top surface of the first high temperature dielectric layer, and depositing a second high temperature dielectric layer over the first high temperature dielectric layer and the base electrode. The method further comprises forming a first contact through the second dielectric layer to a first end of the base electrode, forming a Josephson junction (JJ) overlying and in contact with the first contact, and forming a second contact through the second dielectric layer to a second end of the base electrode.

Abstract: An apparatus includes a top conductive layer of on an integrated circuit waveguide filter and a bottom conductive layer. The top and bottom conductive layers are coupled via a plurality of couplers that form an outline of the waveguide filter. A dielectric substrate layer is disposed between the top conductive layer and the bottom conductive layer of the integrated circuit waveguide filter. The dielectric substrate layer has a relative permittivity, ?r that affects the tuning of the integrated circuit waveguide filter. At least one tunable via includes a tunable material disposed within the dielectric substrate layer and is coupled to a set of electrodes. The set of electrodes enable a voltage to be applied to the tunable material within the tunable via to change the relative permittivity of the dielectric substrate layer and to enable tuning the frequency characteristics of the integrated circuit waveguide filter.

Abstract: One example includes a superconducting gate system. The system includes a first input that is configured to provide a first input pulse and a second input that is configured to provide a second input pulse. The system also includes a gate configured to provide a first output pulse at a first output corresponding to a first logic function with respect to the first and second input pulses and based on a positive bias inductor and a first Josephson junction that are each coupled to the first output. The gate is also configured to provide a second output pulse at a second output corresponding to a second logic function with respect to the first and second input pulses and based on a negative bias inductor and a second Josephson junction that are each coupled to the second output.

Abstract: One embodiment includes a superconducting gate memory circuit. The circuit includes a Josephson D-gate circuit configured to set a digital state as one of a first data state and a second data state in response to a write enable single flux quantum (SFQ) pulse provided on a write enable input and a respective presence of or absence of a write data SFQ pulse provided on a data write input. The circuit also includes a storage loop coupled to the Josephson D-gate. The storage loop can be configured to store the digital state and to readout the digital state at an output in response to a read enable SFQ pulse provided on a read enable input and a read data SFQ pulse provided on a read data input.

Abstract: A cellular communication transceiver including an array which includes a plurality of aperture elements distributed over one or more surfaces, the aperture elements being configured to receive and transmit cellular communication signals, a beamformer configured to apply a time domain beamforming process to the cellular communication signals to enable directional receive and transmit beams to be formed using the aperture elements, and a telemetry subsystem operably coupling the aperture elements to the beamformer.

Abstract: In an exemplary method, three dimensional printing forms a micro lattice truss structure with a first end formed in contact with a conductive area on a PCB so that the truss structure is adhered to the conductive area due to the three dimensional printing. The truss structure extends outward from the PCB and has a distal end. The truss structure is formed with resiliency so that the truss structure maintains structural integrity during end-to-end compression. The resiliency of the micro lattice truss structure enables the truss structure to return to substantially its uncompressed length when the compression is removed. The truss structure is conductive so that a resilient electrical connection can be formed between the conductive area of the PCB and another spaced apart surface parallel with the PCB when the distal end of the truss structure is in contact with and compressed by the other surface.

Abstract: Systems and methods are provided for linking two components in a superconducting circuit. A plurality of circuit elements, each comprising one of an inductor, a capacitor, and a Josephson junction, are connected in series on a path connecting the two components. A plurality of tunable oscillators are connected from the path connecting the two components. Each tunable oscillator is responsive to a control signal to tune an associated resonance frequency of the tunable oscillator within a first frequency range, within which the two components are coupled, and within a second frequency range, within which the two components are isolated.

Abstract: An aviation system is disclosed that has the capabilities to position a high-altitude aviation vehicle within a designated geographic region for extended periods of time or maneuver the high-altitude aviation vehicle along predetermined designated paths.

Abstract: An optical amplifier is provided in which radiation levels experienced by an optical fiber are minimized. A sealed enclosure houses an optical fiber. An input optical signal enters on end of the fiber and an amplified output optical signal exits the other end of the optical fiber. Small particles embedded with a gas fill the interior of the enclosure. An optical pump supplies an amplification laser beam coupled to one of the ends of the optical fiber. Due to energy supplied by the amplification laser beam, the input optical signal is amplified upon exiting the optical fiber. At least a portion of the gas embedded in the small particles is released inside the enclosure when the small particles are subjected to heat to provide a gaseous interior in the enclosure that minimizes radiation levels experienced by the optical fiber due to external radiation.