Abstract: An acoustic wave resonator comprises a piezoelectric material formed of aluminum nitride (AlN) doped with calcium (Ca) to enhance performance of the acoustic wave resonator.

Abstract: Disclosed herein are embodiments of low temperature co-fireable barium tungstate materials which can be used in combination with high dielectric materials, such as nickel zinc ferrite, to form composite structures, in particular for isolators and circulators for radiofrequency components. Embodiments of the material can include flux, such as bismuth vanadate, to reduce co-firing temperatures.

Abstract: Disclosed herein are embodiments of composite hexagonal ferrite materials formed from a combination of Y phase and Z phase hexagonal ferrite materials. Advantageously, embodiments of the material can have a high resonant frequency as well as a high permeability. In some embodiments, the materials can be useful for magnetodielectric antennas.

Abstract: A method of forming a composite material for use as an isolator or circulator in a radiofrequency device comprises providing a low temperature fireable outer material, the low fireable outer material having a garnet or scheelite structure, inserting a high dielectric constant inner material having a dielectric constant above 30 within an aperture in the low temperature fireable outer material, and co-firing the lower temperature fireable outer material and the high dielectric constant inner material together at temperature between 650-900° C. to shrink the low temperature fireable outer material around an outer surface of the high dielectric constant inner material to form an integrated magnetic/dielectric assembly without the use of adhesive or glue.

Abstract: A system for testing at least one test piece. The system includes a pressure vessel including a first chamber receiving a first fluid at a first pressure. The pressure vessel further includes a second chamber receiving a second fluid. The pressure vessel further includes an actuating membrane fluidly separating the first chamber from the second chamber. The system further includes a test vessel including an internal chamber disposed in fluid communication with the second chamber. The test vessel further includes at least one test wall coupled to the at least one test piece. The system further includes an actuator engaged with the actuating membrane and configured to apply a time-varying force on the actuating membrane while the first pressure is being applied by the first fluid on the actuating membrane.

Abstract: Disclosed herein are embodiments of an enhanced resonant frequency hexagonal ferrite material, such as Y-phase hexagonal ferrite material, and methods of manufacturing. In some embodiments, sodium or potassium can be added into the crystal structure of the hexagonal ferrite material in order to achieve improved resonant frequencies in the range of 500 MHz to 1 GHz useful for radiofrequency applications.

Abstract: This disclosure relates to a method for estimating a solution to a problem represented by a Hamiltonian on a quantum computer having a quantum state. A classical computer determines a trial state and evolves the quantum state of the quantum computer based on the trial state. The computer then determines estimates for expectation values with respect to the trial state of powers of the Hamiltonian based on measurements from the quantum computer and calculates an estimate of the solution based on the estimates for the expectation values of powers of the Hamiltonian for the trial state. The computer then repeated updates the trial state and repeats the measuring steps to iteratively improve the estimate of the solution.

Abstract: A method may verify that a fuel tank cap is present and properly closed after refueling of a motor vehicle fuel tank. The method may include, in response to a request for refueling: (a1) enabling refueling of the motor vehicle fuel tank by opening a first vent valve connected in series in a vent line, downstream from a first port of a recirculation line coupled to the vent line, so that to vent the motor vehicle fuel tank to the atmosphere through a fuel vapor canister; (b1) disabling refueling of the motor vehicle fuel tank by closing the first vent valve; (c1) monitoring the internal pressure within the motor vehicle fuel tank when the refueling request is finished; and (d1) concluding that the fuel tank cap is deemed present and properly closed when the internal pressure increases and/or remains higher than the atmospheric pressure.

Abstract: Disclosed herein are embodiments of low temperature co-fireable scheelite materials which can be used in combination with high dielectric materials, such as nickel zinc ferrite, to form composite structures, in particular for isolators and circulators for radiofrequency components. In some embodiments, the scheelite material can include aluminum oxide for temperature expansion regulation.

Abstract: Disclosed herein are embodiments of low temperature co-fireable dielectric materials which can be used in conjunction with high dielectric materials to form composite structures, in particular for isolators and circulators for radiofrequency components. Embodiments of the low temperature co-fireable dielectric materials can be scheelite or garnet structures, for example barium tungstate. Adhesives and/or glue is not necessary for the formation of the isolators and circulators.

Abstract: Disclosed are embodiments of high Q modified materials. In some embodiments, complex tungsten oxides and/or hexagonal perovskite crystal structures can be added to provide for advantageous properties. In some embodiments, no tin is used in the formation of the material.

Abstract: Disclosed herein are embodiments of low temperature co-fireable dielectric materials which can be used in conjunction with high dielectric materials to form composite structures, in particular for isolators and circulators for radiofrequency components. Embodiments of the low temperature co-fireable dielectric materials can be scheelite or garnet structures, for example, bismuth vanadate. Adhesives and/or glue is not necessary for the formation of the isolators and circulators.

Abstract: The disclosed technology relates to a ceramic composition and an article formed therefrom. A ceramic article for radio frequency applications is formed of a ceramic composite material comprising a matrix phase comprising aluminum oxide having a corundum crystal structure and a precipitate phase comprising ZnAl2O4 and Zn2TiO4 and having a spinel crystal structure.

Abstract: Disclosed herein are embodiments of materials having high thermal conductivity along with a high dielectric constants. In some embodiments, a two phase composite ceramic material can be formed having a contiguous aluminum oxide phase with a secondary phase embedded within the continuous phase. Example secondary phases include calcium titanate, strontium titanate, or titanium dioxide.

Abstract: Disclosed herein are ceramic materials, such as bismuth substituted garnets, which can have high curie temperatures and high dielectric constants. In certain implementations, indium can be incorporated into the ceramic to improve certain properties and to avoid calcium compensation. The ceramic materials disclosed herein can be particular advantageous for below resonance applications.

Abstract: A fuel system having a fuel tank, a filler pipe for adding liquid fuel, a carbon canister for collecting fuel vapors from the fuel tank during a refueling operation, a stepper motor and a stepper driven valve for controlling fluid communication between the fuel tank and the canister, where the valve is configured to be positionable in a closed position, an open position creating a passageway with a first size, and one or more intermediate positions each creating a passageway with a size which is smaller than the first size and having a moving element, movable relative to a valve opening between a closed position and an opened position, the moving element having: a sealing means for making a leak tight seal and, a deflecting means for controlling the fluid flow, where the deflecting means protrudes inside the valve opening and is adapted to be located upstream relative to sealing means.

Abstract: The disclosed technology relates to a ceramic composition and an article formed therefrom. A ceramic article for radio frequency applications is formed of a ceramic material having a chemical formula represented by: Bi1.0+aY2.0-a-x-2yCax+2yFe5-x-yMIVxVyO12 or Bi1.0+aY2.0-a-2yCa2yFe5-y-zVyInzO12. The ceramic material has a composition such that a normalized change in saturation magnetization (?4?Ms), defined as ?4?Ms=[(4?Ms at 20° C.)-(4?Ms at 120° C.)]/(4?Ms at 20° C.), is less than about 0.35.

Abstract: The disclosed technology relates to a ceramic composition and an article formed therefrom. A ceramic article for radio frequency applications is formed of a ceramic material having a chemical formula represented by: Bi1.0+aY2.0?a?x?2yCax+2yFe5?x?yMIVxVyO12 or Bi1.0+aY2.0?a?2yCa2yFe5?y?zVyInzO12. The ceramic material has a composition such that a normalized change in saturation magnetization (?4?Ms), defined as ?4?Ms=[(4?Ms at 20° C.)?(4?Ms at 120° C.)]/(4?Ms at 20° C.), is less than about 0.35.