High Frequency Waveguides, Resonators, Electrical Networks, Or Other Devices Of The Waveguide Type (e.g., Phase Shifters, Cavity Filters, Etc.) Patents (Class 505/210)
  • Patent number: 10211499
    Abstract: The present invention discloses a four-mode defected ground structure resonator, comprising a metal dielectric substrate and a defected ground unit which is etched in one surface of the metal dielectric substrate; the shape of the defected ground unit is axially symmetric about a first central axis of the defected ground unit, and also the shape of the defected ground unit is axially symmetric about a second central axis of the defected ground unit; the first defected ground unit is provided with H-shape or quasi H-shape, the second defected ground unit is provided with L-shape, quasi L-shape, U-shape or quasi U-shape. The four-mode defected ground structure resonator of the present invention is provided with four types of resonant modes, and the four types of resonant modes are provided with good tunability.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: February 19, 2019
    Assignee: QINDAO HAIER ELECTRONICS CO., LTD.
    Inventors: Biao Peng, Shufang Li, Shuai Wang, Ling Wang, Yili Zhai, Xijia Hu
  • Patent number: 10170814
    Abstract: Disclosed is a four-mode defected ground structure filter, including a four-mode defected ground structure resonator and two microstrip feed lines. The four-mode defected ground structure resonator comprises a metal dielectric substrate and a defected ground unit which is etched in one surface of the metal dielectric substrate; the microstrip feed lines are arranged at another surface of the metal dielectric substrate; shape of the defected ground unit is axially symmetric about a first central axis of the defected ground unit, and is axially symmetric about a second central axis of the defected ground unit; the first defected ground unit is provided with H-shape or quasi H-shape, the second defected ground unit is provided with L-shape, quasi L-shape, U-shape or quasi U-shape.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: January 1, 2019
    Assignee: QINGDAO HAIER ELECTRONICS CO., LTD.
    Inventors: Biao Peng, Shufang Li, Shuai Wang, Ling Wang, Yili Zhai, Xijia Hu
  • Patent number: 9721854
    Abstract: A system, method and apparatus may comprise a wafer having a plurality of spiral test structures located on the kerf of the wafer. The spiral test structure may comprise a spiral connected at either end by a capacitor to allow the spiral test structure to resonate. The spiral structures may be located on a first metal layer or on multiple metal layers. The system may further incorporate a test apparatus having a frequency transmitter and a receiver. The test apparatus may be a sensing spiral which may be placed over the spiral test structures. A controller may provide a range of frequencies to the test apparatus and receiving the resonant frequencies from the test apparatus. The resonant frequencies will be seen as reductions in signal response at the test apparatus.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: August 1, 2017
    Assignee: International Business Machines Corporation
    Inventors: Hanyi Ding, Kai D. Feng, Ping-Chuan Wang, Zhijian Yang
  • Patent number: 9633314
    Abstract: A quantum qubit coupling structure is provided. The quantum qubit coupling structure includes a plurality of qubits and a variable capacitor electrically connected between the plurality of qubits to vary coupling constants of the plurality of qubits.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: April 25, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Hyeokshin Kwon
  • Patent number: 9335479
    Abstract: A device for detecting electromagnetic radiation comprises a waveguide and at least one resonator on a substrate, and a low-refractive index region between each resonator and the substrate. The low-refractive index region has a lower refractive index than a material of the resonator. The low-refractive index region may be annular, and may have a width corresponding to a width of a region in which electromagnetic radiation is concentrated in a whispering-gallery resonant mode. The low-refractive index region may be an air gap between the substrate and the resonator. The device may be a spectrometer for detecting a plurality of predetermined wavelengths of electromagnetic radiation.
    Type: Grant
    Filed: October 9, 2012
    Date of Patent: May 10, 2016
    Assignee: ASTRIUM LIMITED
    Inventors: Stephen Sweeney, Yaping Zhang
  • Patent number: 9300021
    Abstract: Q of resonant elements formed over lossy substrates such as in a CMOS process is improved by forming the ground plane of the resonant element immediately over a high impedance layer to reduce cross coupling and eddy currents. A new type of meandering hairpin resonator configuration is also introduced providing, for example, for 4th order cross coupled filters of high selectivity and compact layout.
    Type: Grant
    Filed: September 23, 2008
    Date of Patent: March 29, 2016
    Assignee: NITERO PTY LIMITED
    Inventors: Bo Yang, Stan Skafidas, Robin Evans
  • Patent number: 9287607
    Abstract: A tunable resonator assembly includes a resonator coil having an inductance, and a tile residing at a position relative to the resonator coil the position selected to produce a desired change in the inductance of the resonator coil.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: March 15, 2016
    Assignee: WiTricity Corporation
    Inventors: Volkan Efe, Katherine L. Hall, Alexander Patrick McCauley, Morris P. Kesler
  • Publication number: 20150065349
    Abstract: A superconducting filter device of an embodiment includes: a high-frequency filter includes a superconducting element, and a dielectric member; and a drive tool configured to adjust a distance between the superconducting element and the dielectric member. The dielectric member and the drive tool take both a connection state and a separation state.
    Type: Application
    Filed: August 28, 2014
    Publication date: March 5, 2015
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Mutsuki Yamazaki, Kohei Nakayama, Noritsugu Shiokawa, Tamio Kawaguchi, Hiroyuki Kayano
  • Patent number: 8965468
    Abstract: A persistent-mode High Temperature Superconductor (HTS) shim coil is provided having at least one rectangular shaped thin sheet of HTS, wherein the thin sheet of HTS contains a first long portion, a second long portion parallel to first long portion, a first end, and a second end parallel to the first end. The rectangular shaped thin sheet of high-temperature superconductor has a hollow center and forms a continuous loop. In addition, the first end and the second end are folded toward each other forming two rings, and the thin sheet of high-temperature superconductor has a radial build that is less than 5 millimeters (mm) and able to withstand very strong magnetic field ranges of greater than approximately 12 Tesla (T) within a center-portion of a superconducting magnet of a superconducting magnet assembly.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: February 24, 2015
    Assignee: Massachusetts Institute of Technology
    Inventor: Yukikazu Iwasa
  • Patent number: 8951936
    Abstract: Provided is a method of manufacturing a superconducting accelerator cavity in which a plurality of half cells having opening portions (equator portions and iris portions) at both ends thereof in an axial direction are placed one after another in the axial direction, contact portions where the corresponding opening portions come into contact with each other are joined by welding, and thus, a superconducting accelerator cavity is manufactured, the half cells to be joined are arranged so that the axial direction thereof extends in a vertical direction; and concave portions that are concave towards an outer side are also formed at inner circumferential surfaces located below the contact portions of the half cells positioned at a bottom; and the contact portions are joined from outside by penetration welding.
    Type: Grant
    Filed: May 9, 2011
    Date of Patent: February 10, 2015
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Katsuya Sennyu, Hiroshi Hara, Takehisa Okuda
  • Patent number: 8954125
    Abstract: Low-loss superconducting devices and methods for fabricating low loss superconducting devices. For example, superconducting devices, such as superconducting resonator devices, are formed with a (200)-oriented texture titanium nitride (TiN) layer to provide high Q, low loss resonator structures particularly suitable for application to radio-frequency (RF) and/or microwave superconducting resonators, such as coplanar waveguide superconducting resonators. In one aspect, a method of forming a superconducting device includes forming a silicon nitride (SiN) seed layer on a substrate, and forming a (200)-oriented texture titanium nitride (TiN) layer on the SiN seed layer.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: February 10, 2015
    Assignees: International Business Machines Corporation, The United States of America, as represented by the Secretary of Commerce, The National Institute of Standards
    Inventors: Antonio D. Corcoles Gonzalez, Jiansong Gao, Dustin A. Hite, George A. Keefe, David P. Pappas, Mary E. Rothwell, Matthias Steffen, Chang C. Tsuei, Michael R. Vissers, David S. Wisbey
  • Patent number: 8942774
    Abstract: A resonance element according to an embodiment transmits a radio-frequency signal, and includes a first substrate, a second substrate, a first circuit element formed on the first substrate, a second circuit element formed on the second substrate, and a transmission line connecting the first circuit element and the second circuit element, and a peak of even mode resonance in which the first circuit element and the second circuit element resonate in the same phase is within a bandwidth of a transmission signal, and a peak of odd mode resonance in which the first circuit element and the second circuit element resonate in a reverse phase is outside the bandwidth.
    Type: Grant
    Filed: July 25, 2012
    Date of Patent: January 27, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Tamio Kawaguchi
  • Patent number: 8938277
    Abstract: A filter of an embodiment includes: a microstrip-line planar filter that includes an input line, resonators, and an output line, and has a passband with a center frequency f0; a metal case housing the planar filter; and structural components that include dielectric components, the structural components arranged in the metal case at an interval in the traveling direction of electromagnetic waves from the input line to the output line or in a direction perpendicular to the wavefront of the standing waves generated by the electromagnetic waves resonating in the metal case, the interval being ? to ½ wavelength in terms of the electrical length of the center frequency f0.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: January 20, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Noritsugu Shiokawa
  • Publication number: 20140375399
    Abstract: A narrowband filter tuned at a center frequency. The filter comprises an input terminal, an output terminal, and a plurality of resonators coupled in cascade between the input terminal and the output terminal. Each of the resonators is tuned at a resonant frequency substantially equal to the center frequency. The resonant frequencies of a primary set of the resonators and a secondary set of the resonators are of different orders.
    Type: Application
    Filed: September 12, 2014
    Publication date: December 25, 2014
    Inventors: Kurt Raihn, Neal Fenzi
  • Patent number: 8903464
    Abstract: An apparatus and process for the production of a niobium cavity exhibiting high quality factors at high gradients is provided. The apparatus comprises a first chamber positioned within a second chamber, an RF generator and vacuum pumping systems. The process comprises placing the niobium cavity in a first chamber of the apparatus; thermally treating the cavity by high temperature in the first chamber while maintaining high vacuum in the first and second chambers; and applying a passivating thin film layer to a surface of the cavity in the presence of a gaseous mixture and an RF field. Further a niobium cavity exhibiting high quality factors at high gradients produced by the method of the invention is provided.
    Type: Grant
    Filed: October 23, 2010
    Date of Patent: December 2, 2014
    Assignee: Jefferson Science Associates, LLC
    Inventors: Ganapati Rao Myneni, John P. Wallace
  • Patent number: 8883690
    Abstract: A superconducting accelerating cavity production method with which a high-quality superconducting accelerating cavity can be produced with a compact device configuration and at low cost. The method of producing a superconducting accelerating cavity (1) includes arranging, in an axial direction (L), a plurality of half-cells (5) having openings at both ends in the axial direction and joining the openings to one another by welding. The half-cells (5) are joined by welding with a laser beam from the inside of the superconducting accelerating cavity (1) in which a vacuum atmosphere is created.
    Type: Grant
    Filed: August 11, 2010
    Date of Patent: November 11, 2014
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventor: Katsuya Sennyu
  • Publication number: 20140309117
    Abstract: A DC superconducting coaxial transmission system provides electrical transmission of 5,000 megawatts of energy while simultaneously delivering liquid hydrogen. The transmission system includes a coaxial transmission segment including an inner superconductor, an outer superconductor disposed in surrounding relation to the inner conductor, and a dielectric insulator disposed between the inner superconductor and the outer superconductor. Liquid hydrogen surrounds the superconductors. Three phase transformers and poly phase rectifier/inverters provide a DC voltage source to the superconductors from the electrical grid. In one embodiment, a switching circuit connected between the voltage source and the superconductor injects a cancellation current component into the direct current flow.
    Type: Application
    Filed: June 30, 2014
    Publication date: October 16, 2014
    Inventors: William A. Carter, Scott C. Carter, Ilkka T. Pylkkanen
  • Patent number: 8862192
    Abstract: A narrowband filter tuned at a center frequency. The filter comprises an input terminal, an output terminal, and a plurality of resonators coupled in cascade between the input terminal and the output terminal. Each of the resonators is tuned at a resonant frequency substantially equal to the center frequency. The resonant frequencies of a primary set of the resonators and a secondary set of the resonators are of different orders.
    Type: Grant
    Filed: April 25, 2011
    Date of Patent: October 14, 2014
    Assignee: Resonant Inc.
    Inventors: Kurt Raihn, Neal Fenzi
  • Patent number: 8812068
    Abstract: A method of forming a delta niobium nitride ?-NbN layer on the surface of a niobium object including cleaning the surface of the niobium object; providing a treatment chamber; placing the niobium object in the treatment chamber; evacuating the chamber; passing pure nitrogen into the treatment chamber; focusing a laser spot on the niobium object; delivering laser fluences at the laser spot until the surface of the niobium object reaches above its boiling temperature; and rastering the laser spot over the surface of the niobium object.
    Type: Grant
    Filed: October 15, 2012
    Date of Patent: August 19, 2014
    Assignee: Jefferson Science Associates, LLC.
    Inventors: Michael J. Kelley, John Michael Klopf, Senthilaraja Singaravelu
  • Patent number: 8812066
    Abstract: SQUIDs may detect local magnetic fields. SQUIDS of varying sizes, and hence sensitivities may detect different magnitudes of magnetic fields. SQUIDs may be oriented to detect magnetic fields in a variety of orientations, for example along an orthogonal reference frame of a chip or wafer. The SQUIDS may be formed or carried on the same chip or wafer as a superconducting processor (e.g., a superconducting quantum processor). Measurement of magnetic fields may permit compensation, for example allowing tuning of a compensation field via a compensation coil and/or a heater to warm select portions of a system. A SQIF may be implemented as a SQUID employing an unconventional grating structure. Successful fabrication of an operable SQIF may be facilitated by incorporating multiple Josephson junctions in series in each arm of the unconventional grating structure.
    Type: Grant
    Filed: October 8, 2009
    Date of Patent: August 19, 2014
    Assignee: D-Wave Systems Inc.
    Inventors: Trevor Michael Lanting, Paul I. Bunyk, Andrew J. Berkley, Richard G. Harris, Sergey V. Uchaykin, Andrew Brock Wilson, Mark Johnson
  • Patent number: 8774883
    Abstract: A DC superconducting coaxial transmission system provides electrical transmission of 5,000 megawatts of energy while simultaneously delivering liquid hydrogen. The transmission system includes a coaxial transmission segment including an inner superconductor, an outer superconductor disposed in surrounding relation to the inner conductor, and a dielectric insulator disposed between the inner superconductor and the outer superconductor. Liquid hydrogen surrounds the superconductors. Three phase transformers and poly phase rectifier/inverters provide a DC voltage source to the superconductors from the electrical grid. In one embodiment, a switching circuit connected between the voltage source and the superconductor injects a cancellation current component into the direct current flow.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: July 8, 2014
    Assignee: Lighthouse Energy Solutions LLC
    Inventors: William A. Carter, Scott C. Carter, Ilkka T. Pylkkanen
  • Patent number: 8761849
    Abstract: A superconductive filter includes a superconductive filter substrate having a dielectric substrate and a plurality of resonator patterns formed on a surface of the dielectric substrate, the plurality of resonator patterns including a superconductive material; a package accommodating the superconductive filter substrate; and an intermediate substrate disposed between an inner surface of the package and the superconductive filter substrate, and thermally coupling the package and the superconductive filter substrate wherein a difference between a degree of contraction of the intermediate substrate and the degree of contraction of the dielectric substrate is smaller than a difference between the degree of contraction of the dielectric substrate and the degree of contraction of the package, when the package, the intermediate substrate, and the dielectric substrate are cooled from room temperature to a critical temperature of the resonator patterns.
    Type: Grant
    Filed: October 27, 2009
    Date of Patent: June 24, 2014
    Assignee: Fujitsu Limited
    Inventors: Teru Nakanishi, Akihiko Akasegawa, Kazunori Yamanaka, Kazuaki Kurihara
  • Patent number: 8731628
    Abstract: As typically embodied, the present invention's RF cavity device comprises a rigid frame and plural flexible tiles. The frame includes walls of at least substantially uniform thicknesses that describe a hollow pillbox shape. The tiles are at least approximately equally thick, each tile being of at least substantially uniform thickness. Each tile includes a flexible metallic substrate and an HTS coating atop the substrate. The tiles are attached via their corresponding substrates to the inside wall surfaces of the frame so that their corresponding HTS coatings are interiorly exposed. The attached tiles flexibly conform to curved surface areas, are snugly set with narrow seams therebetween, and cover at least approximately the entirety of the frame's inside wall surfaces. A filler material is applied to the seams. The resultant tile configuration is characterized by at least approximate levelness of the exposed HTS coating surfaces and the filled seams.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: May 20, 2014
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Yehoshua Dan Agassi, Daniel E. Oates
  • Patent number: 8725224
    Abstract: A filter includes a dielectric substrate; an electrode layer continuously formed covering a first side of the dielectric substrate; a disk-shaped electrode pattern provided on a second side of the dielectric substrate, the disk-shaped electrode pattern and the electrode layer holding the dielectric substrate therebetween; a ground slot having an opening that is formed asymmetrically with respect to the center of a circular area included in the electrode layer and exposes the dielectric substrate, the circular area and the disk-shaped electrode pattern holding the dielectric substrate therebetween.
    Type: Grant
    Filed: July 7, 2009
    Date of Patent: May 13, 2014
    Assignee: Fujitsu Limited
    Inventors: Keisuke Sato, Teru Nakanishi, Akihiko Akasegawa, Kazunori Yamanaka, Kazuaki Kurihara
  • Patent number: 8644896
    Abstract: A tunable notch filter, comprises a transmission line coupled to an antenna; a plurality of ring resonators inductively coupled to the transmission line, wherein each ring resonator of the plurality of ring resonators is grounded and comprises a variable microelectromechanical systems (MEMS) capacitor; wherein a set of variable MEMS capacitors of the plurality of variable MEMS capacitors are independently tunable to vary a notch location and a notch width of the tunable notch filter; and wherein a set of ring resonators of the plurality of ring resonators further comprises an attenuator configured to reduce power reflected from the antenna.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: February 4, 2014
    Assignee: Physical Optics Corporation
    Inventors: Daniel Mark Bock, Tomasz Jannson, Nathanael Keehoon Kim, Alireza Shapoury, Davis Tran
  • Publication number: 20130281302
    Abstract: The present invention introduces a detector that is able to detect single microwave photons propagating in a waveguide. The waveguide of the invention is lowered to a temperature where it becomes superconductive. Disposed between a middle wire and a ground plane of the waveguide is a very small piece of a desired normal metal, whereby so-called SN contacts are formed between these materials. A separate reflection measurement circuit is coupled to the normal metal piece. When the impedance of the waveguide is matched to the impedance of the normal metal piece as well as possible, a photon propagating in the waveguide is most likely absorbed in the normal metal. The absorption slightly raises the temperature of the piece, which further changes the impedance observed in a so-called SIN junction between the reflection measurement circuit and the piece.
    Type: Application
    Filed: September 20, 2011
    Publication date: October 24, 2013
    Applicant: Aalto-Korkeakoulusäätiö
    Inventors: Mikko Möttönen, Jukka Pekola
  • Publication number: 20130217580
    Abstract: Adaptations and improvements to tubular metal powder filters include employing non-circular cross sectional geometries, aligning the inner conductor off-axis, replacing the inner conductive wire with a conductive trace carried on a printed circuit board, combining multiple filters within a single common outer conductive housing, and employing meandering and other non-parallel signal paths. The various adaptations and improvements are designed to accommodate single-ended and differential signaling, as well as superconducting and non-superconducting applications.
    Type: Application
    Filed: December 6, 2012
    Publication date: August 22, 2013
    Applicant: D-WAVE SYSTEMS INC.
    Inventor: D-Wave Systems Inc.
  • Patent number: 8463342
    Abstract: Superconducting rf is limited by a wide range of failure mechanisms inherent in the typical manufacture methods. This invention provides a method for fabricating superconducting rf structures comprising coating the structures with single atomic-layer thick films of alternating chemical composition. Also provided is a cavity defining the invented laminate structure.
    Type: Grant
    Filed: October 6, 2008
    Date of Patent: June 11, 2013
    Assignee: Uchicago Argonne, LLC
    Inventors: James H. Norem, Michael J. Pellin
  • Patent number: 8441329
    Abstract: An I/O system and device for use with superconducting device provides multi-stage filtering using superconducting electrical pathways, while providing good thermal conductivity to maintain low temperature of the various components and allowing the easy mounting and dismounting of a device sample from a refrigerated environment. Filtering may include a lumped element filter assembly including multiple plates each carrying a number of lumped element filters. Filtering may include a metal powder filter assembly including multiple metal power filters formed in passages of a substantially non-magnetic portions. A device sample holder assembly secures a device sample, for example a superconducting quantum processor, and provides signals, ground and good thermal conduction.
    Type: Grant
    Filed: January 18, 2008
    Date of Patent: May 14, 2013
    Assignee: D-Wave Systems Inc.
    Inventors: Murray C. Thom, Andrew Berkley, Alexander M. Tcaciuc, Mark Johnson, Paul Bunyk, Jaspaul Chung, Jacob Craig Petroff, Florin Cioata
  • Publication number: 20130082804
    Abstract: A resonance element according to an embodiment transmits a radio-frequency signal, and includes a first substrate, a second substrate, a first circuit element formed on the first substrate, a second circuit element formed on the second substrate, and a transmission line connecting the first circuit element and the second circuit element, and a peak of even mode resonance in which the first circuit element and the second circuit element resonate in the coordinated phase is within a bandwidth of a transmission signal, and a peak of odd mode resonance in which the first circuit element and the second circuit element resonate in a reverse phase is outside the bandwidth.
    Type: Application
    Filed: July 25, 2012
    Publication date: April 4, 2013
    Applicant: Kabushiki Kaisha Toshiba
    Inventor: Tamio KAWAGUCHI
  • Patent number: 8412292
    Abstract: Intermodulation distortion (IMD) is known to be an impediment to progress in superconductor-based filter technology. The present invention's methodology for reducing IMD can open doors to heretofore unseen practical applications involving high temperature superconductor (HTS) filters. Typical inventive practice includes (a) increasing the thickness d, and/or (b) changing the operation temperature T, of the filter's HTS film. The film's thickness d is increased in such a way as to decrease the IMD power PIMD in accordance with the material-independent proportionate relationship PIMD?1/d1.5-6. The film's operation temperature T is bettered or optimized in accordance with the material-independent proportionate relationship PIMD?(?O(T))10(K(2)(T))2/(?O(T))6, and further in accordance with three individual material-dependent relationships, namely, between operation temperature T and each of linear penetration depth ?O, gap maximum ?O, and kernel K(2).
    Type: Grant
    Filed: July 16, 2010
    Date of Patent: April 2, 2013
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Yehoshua Dan Agassi, Daniel E. Oates
  • Patent number: 8405468
    Abstract: An electronic filtering device includes continuous trace on a dielectric substrate and a dissipation layer communicatively coupled to the trace. The dissipation layer may include disconnected metal particles, which may be embedded in a substrate, for example in an epoxy. The continuous trace may be meandering, for example crenulated, coil or spiral signal path. At least a second continuous trace may be spaced from the first by the substrate, and conductively coupled by a via. The electronic filtering device may be used in one or more printed circuit boards (PCBs) that form stages of an input/output system.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: March 26, 2013
    Assignee: D-Wave Systems Inc.
    Inventor: Sergey V. Uchaykin
  • Patent number: 8391937
    Abstract: As typically embodied, the present invention's RF cavity device comprises a rigid frame and plural flexible tiles. The frame includes walls of at least substantially uniform thicknesses that describe a hollow pillbox shape. The tiles are at least approximately equally thick, each tile being of at least substantially uniform thickness. Each tile includes a flexible metallic substrate and an HTS coating atop the substrate. The tiles are attached via their corresponding substrates to the inside wall surfaces of the frame so that their corresponding HTS coatings are interiorly exposed. The attached tiles flexibly conform to curved surface areas, are snugly set with narrow seams therebetween, and cover at least approximately the entirety of the frame's inside wall surfaces. A filler material is applied to the seams. The resultant tile configuration is characterized by at least approximate levelness of the exposed HTS coating surfaces and the filled seams.
    Type: Grant
    Filed: March 5, 2008
    Date of Patent: March 5, 2013
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Yehoshua Dan Agassi, Daniel E. Oates
  • Publication number: 20130029848
    Abstract: Low-loss superconducting devices and methods for fabricating low loss superconducting devices. For example, superconducting devices, such as superconducting resonator devices, are formed with a (200)-oriented texture titanium nitride (TiN) layer to provide high Q, low loss resonator structures particularly suitable for application to radio-frequency (RF) and/or microwave superconducting resonators, such as coplanar waveguide superconducting resonators. In one aspect, a method of forming a superconducting device includes foaming a silicon nitride (SiN) seed layer on a substrate, and forming a (200)-oriented texture titanium nitride (TiN) layer on the SiN seed layer.
    Type: Application
    Filed: July 28, 2011
    Publication date: January 31, 2013
    Applicant: International Business Machines Corporation
    Inventors: Antonio D. Corcoles Gonzalez, Jiansong Gao, Dustin A. Hite, George A. Keefe, David P. Pappas, Mary E. Rothwell, Matthias Steffen, Chang C. Tsuei, Michael R. Vissers, David S. Wisbey
  • Patent number: 8346325
    Abstract: Adaptations and improvements to tubular metal powder filters include employing non-circular cross sectional geometries, aligning the inner conductor off-axis, replacing the inner conductive wire with a conductive trace carried on a printed circuit board, combining multiple filters within a single common outer conductive housing, and employing meandering and other non-parallel signal paths. The various adaptations and improvements are designed to accommodate single-ended and differential signaling, as well as superconducting and non-superconducting applications.
    Type: Grant
    Filed: January 21, 2011
    Date of Patent: January 1, 2013
    Assignee: D-Wave Systems Inc.
    Inventors: Murray C. Thom, Sergey Uchaykin, Thomas Mahon, David Pires, Peter Spear, Jacob Craig Petroff
  • Patent number: 8255023
    Abstract: A cryostat (1) with a magnet coil system including superconductors for the production of a magnet field B0 in a measuring volume (3) has a plurality of radially nested solenoid-shaped coil sections (4, 5, 6) and which are electrically connected in series, at least one of which being an LTS section (5, 6) with a conventional low temperature superconductor (LTS) and at least one of which being an HTS section (4) including a high temperature superconductor (HTS), wherein the magnet coil system is located in a helium tank (9) of the cryostat (1) along with liquid helium at a helium temperature TL. The apparatus is characterized in that a chamber (11) is provided within which the HTS sections (4) are held having an internal portion with a sufficiently low pressure such that helium located therein at a temperature of TL is gaseous. The cryostat in accordance with the invention can be utilized to maintain HTS coil sections over a long period of time in a reliable fashion.
    Type: Grant
    Filed: March 7, 2007
    Date of Patent: August 28, 2012
    Assignees: Bruker Biospin GmbH, Forschungszentrum Karlsruhe GmbH
    Inventors: Klaus Schlenga, Marion Klaeser, Thomas Arndt
  • Patent number: 8255024
    Abstract: Between adjacent windings of a bifilar coil made of an HTS strip conductor in a resistive superconductive current limiter device, a spacer is provided which is transparent for a coolant. The spacer includes an electrically insulating support tape for sufficiently massive spacer elements attached thereon. The spacer elements are spaced and made of a material having high thermal conductivity. The spaces between the spacer elements form cooling channels for the coolant.
    Type: Grant
    Filed: June 21, 2007
    Date of Patent: August 28, 2012
    Assignee: Siemens Aktiengesellschaft
    Inventors: Hans-Peter Krämer, Wolfgang Schmidt
  • Patent number: 8255022
    Abstract: A cryostat (1) with a magnet coil system including superconductors for the production of a magnet field B0 in a measuring volume (3) has a plurality of radially nested solenoid-shaped coil sections (4, 5, 6) which are electrically connected in series, at least one of which being an LTS section (5, 6) with a conventional low temperature superconductor (LTS) and at least one of which being an HTS section (4) including a high temperature superconductor (HTS), wherein the LTS section (5, 6) is located in a first helium tank (9) of the cryostat (1) along with liquid helium at a helium temperature TL<4 K. The apparatus is characterized in that the HTS section (4) is disposed radially within the LTS section (5, 6) in a separate helium tank (19) of the cryostat (1) having normal liquid helium and is separated from the LTS section (5, 6) by means of at least one wall disposed between the two helium tanks.
    Type: Grant
    Filed: March 7, 2007
    Date of Patent: August 28, 2012
    Assignees: Bruker Biospin GmbH, Forschungszentrum Karlsruhe GmbH
    Inventors: Theo Schneider, Gerhard Roth, Arne Kasten
  • Patent number: 8238989
    Abstract: A Radio Frequency (RF) component comprising a non-superconducting material, and a superconducting material, wherein the superconducting material is disposed in one or more areas of the RF component such that the areas with superconducting material conduct greater current density than do areas with the non-superconducting material.
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: August 7, 2012
    Assignee: Hong Kong Applied Science and Technology Research Institute Co., Ltd.
    Inventor: Corbett R. Rowell
  • Patent number: 8224409
    Abstract: A three-dimensional filter includes a pair of superconductor films opposed to each other, and a three-dimensional resonator made of dielectric and situated between the superconductor films, wherein one of the superconductor films is movable relative to the three-dimensional resonator.
    Type: Grant
    Filed: March 9, 2009
    Date of Patent: July 17, 2012
    Assignee: Fujitsu Limited
    Inventors: Kazunori Yamanaka, Akihiko Akasegawa, Keisuke Sato
  • Patent number: 8211833
    Abstract: The invention pertains to creating new extremely low resistance (“ELR”) materials, which may include high temperature superconducting (“HTS”) materials. In some implementations of the invention, an ELR material may be modified by depositing a layer of modifying material unto the ELR material to form a modified ELR material. The modified ELR material has improved operational characteristics over the ELR material alone. Such operational characteristics may include operating at increased temperatures or carrying additional electrical charge or other operational characteristics. In some implementations of the invention, the ELR material is a cuprate-perovskite, such as, but not limited to YBCO. In some implementations of the invention, the modifying material is a conductive material that bonds easily to oxygen, such as, but not limited to, chromium.
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: July 3, 2012
    Assignee: Ambature, LLC
    Inventors: Douglas J. Gilbert, Timothy S. Cale
  • Publication number: 20120142537
    Abstract: A DC superconducting coaxial transmission system provides electrical transmission of 5,000 megawatts of energy while simultaneously delivering liquid hydrogen. The transmission system includes a coaxial transmission segment including an inner superconductor, an outer superconductor disposed in surrounding relation to the inner conductor, and a dielectric insulator disposed between the inner superconductor and the outer superconductor. Liquid hydrogen surrounds the superconductors. Three phase transformers and poly phase rectifier/inverters provide a DC voltage source to the superconductors from the electrical grid. In one embodiment, a switching circuit connected between the voltage source and the superconductor injects a cancellation current component into the direct current flow.
    Type: Application
    Filed: December 2, 2011
    Publication date: June 7, 2012
    Applicant: Lighthouse Energy Solutions LLC
    Inventors: William A. Carter, Scott C. Carter, Ilkka T. Pylkkanen
  • Publication number: 20120135867
    Abstract: An I/O system and device for use with superconducting device provides multi-stage filtering using superconducting electrical pathways, while providing good thermal conductivity to maintain low temperature of the various components and allowing the easy mounting and dismounting of a device sample from a refrigerated environment. Filtering may include a lumped element filter assembly including multiple plates each carrying a number of lumped element filters. Filtering may include a metal powder filter assembly including multiple metal power filters formed in passages of a substantially non-magnetic portions. A device sample holder assembly secures a device sample, for example a superconducting quantum processor, and provides signals, ground and good thermal conduction.
    Type: Application
    Filed: January 18, 2008
    Publication date: May 31, 2012
    Inventors: Murray C. Thom, Andrew Berkley, Alexander M. Tcaciuc, Mark Johnson, Paul Bunyk, Jaspaul Chung, Jacob Craig Petroff, Florin Ciota
  • Publication number: 20120094839
    Abstract: Niobium or its alloy based Superconducting Radio Frequency (SCRF) Cavities involving atleast one laser beam welded components in the SCRF cavity welded from inside surface of the wall of cavity directed to achieving more than half the thickness to full depth penetration with minimum HAZ, minimizing distortion and shrinkage. The method ensures improved weld quality and surface finish substantially free of any weld defects. Also disclosed is the welding nozzle system and welding rigs adapted to facilitate such laser welding of the Niobium or its alloy based Superconducting Radio Frequency (SCRF) Cavities. The invention is thus directed to enhancing productivity, ensuring consistent quality and reliability, enhanced weld penetration with minimum HAZ, smooth finish of weld joints at possible reduced costs.
    Type: Application
    Filed: November 3, 2009
    Publication date: April 19, 2012
    Applicant: THE SECRETARY DEPARTMENT OF ATOMIC ENERGY, GOVT. OF INDIA
    Inventors: Prashant Khare, Brahma Nand Upadhyay, Sindhunil Barman Roy, Chandrakant Pithawa, Vinod Chandra Sahni, Purushottam Das Gupta, Pradeep Kumar Kush
  • Publication number: 20120088675
    Abstract: Adaptations and improvements to tubular metal powder filters include employing a polyester binder or a binder formed of vacuum grease, employing metal powders of multiple different chemical compositions and/or spanning multiple different ranges of grain-size, replacing the outer conductive housing and metal powder components with a single structure formed of sintered metal powder, and texturing (such as rifling, threading, sanding, or scratching) an inner surface of the outer conductive housing. The various adaptations and improvements are designed to accommodate single-ended and differential signaling, as well as superconducting and non-superconducting applications.
    Type: Application
    Filed: October 5, 2011
    Publication date: April 12, 2012
    Inventors: David Pires, Sergey V. Uchaykin, Jacob Craig Petroff, Alexandr M. Tcaciuc
  • Patent number: 8145258
    Abstract: A radio communication apparatus includes housings that are connected via a hinge unit in an openable/closeable manner, and circuit boards in the housings. The circuit boards are connected via circuit connecting lines functioning as an inductor. One end of the hinge unit is connected to an end portion of the housing and the other end thereof is connected to a portion located farther inside than an end portion of the housing. When the housings are unfolded, a region extending from the portion to the end portion of the housing overlaps a region near the end portion of the housing in a projection domain. A high dielectric member is provided in this overlapped region, and a capacitor is constituted by the high dielectric member and ground areas.
    Type: Grant
    Filed: September 9, 2009
    Date of Patent: March 27, 2012
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Jin Sato, Kengo Onaka
  • Patent number: 8143972
    Abstract: The present invention provides a resonator and a filter that reduce the resonator radiation loss so as to achieve a high Q value that is inherent to a low-loss material while maintaining high power handling capability. In this manner, both high power handling capability and a high Q value can be achieved at the same time. The resonator is a microstripline structure and includes a line structure formed with resonance lines in which current standing waves are generated in a resonant state in a line, and currents in each two adjacent lines flow in the opposite directions from each other, and a connection line that connects the resonance lines at the portions having in-phase voltages among the nodes of the current standing waves of the resonance lines in the resonant state. The filter includes resonators of the same type as the above resonator.
    Type: Grant
    Filed: September 22, 2009
    Date of Patent: March 27, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Noritsugu Shiokawa, Hiroyuki Kayano
  • Patent number: 8126523
    Abstract: Use, as a component with variable inductance which is a function of the current passing through it, of an inductive superconductive component having at least two terminals and comprising at least one line segment working with said terminals and integrating at least one of these terminals, this line segment constituting a conductive or superconductive layer within a stack of films alternately superconductive and insulating.
    Type: Grant
    Filed: January 13, 2006
    Date of Patent: February 28, 2012
    Assignee: Centre National de la Recherche Scientifique
    Inventors: Pierre Bernstein, Jean-François Hamet, Laurence Mechin, Nabil Touitou, Séverine Mouchel
  • Patent number: 8112134
    Abstract: The superconducting current-limiting device contains at least one coil (61), the conductive track of which is formed from at least one band-shaped superconductor (17), where a holding element (2, 41, 10, 51, 62) is located between adjacent coil windings. The holding element (2, 41, 51, 62) is constructed wider than the superconductor (17) in the axial direction of the coil (61). The holding element (2, 41, 51, 62) further includes a flat strip (11) and an undulating strip (12, 42, 52). The flat strip (11) extends essentially parallel to the band-shaped superconductor (17) at an essentially constant distance (22) therefrom. The undulating strip (12, 42, 52) extends essentially parallel to the flat strip (11), and in the longitudinal direction periodically has regions (15, 43, 53) distant from and regions (13) close to the flat strip (11). The regions (13) of the undulating strip (12, 42, 52) near to the flat strip have a mechanical connection (21) to the flat strip (11).
    Type: Grant
    Filed: June 21, 2007
    Date of Patent: February 7, 2012
    Assignee: Siemens Aktiengesellschaft
    Inventors: Hans-Peter Krämer, Manfred Wohlfart
  • Patent number: 8105981
    Abstract: This invention provides a thin superconducting oxide film, which can realize a high critical current, and a superconducting member having a high level of electric power resistance. The superconducting member comprises a sapphire R face substrate, a buffer layer formed of grain lumps of an oxide provided on the sapphire R face substrate, and a superconducting layer provided on the buffer layer. The nearest neighbor distance between oxygen atoms in the oxide and the grain diameter of grain lumps of the oxide have been specified. The superconducting member can be used as a member for superconducting filters.
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: January 31, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kohei Nakayama, Mutsuki Yamazaki