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| Number | Title | Issue Date |
| 7369010 | Laser trimming to tune the resonance frequency of a spiral resonator, the characteristics of a high temperature superconductor filter comprised of spiral resonators, or the resonance of a planar coil This invention provides a laser trimming method for tuning the frequency of a spiral resonator, and for improving the characteristics of a high temperature superconductor filter comprised of high temperature superconductor spiral resonators, by tuning the individual... | 05/06/2008 |
| 7338921 | MgB2 superconductor and method for preparation thereof An electrode is steeped in a solution of Mg and B and a negative voltage is applied to the electrode so as to precipitate superconductive MgB2 on the electrode. Superconductive MgB2 is easily manufactured in various forms and at low costs witho... | 03/04/2008 |
| 7231238 | High temperature spiral snake superconducting resonator having wider runs with higher current density Novel structures and methods for forming useful high temperature superconducting devices, most particularly resonators, are provided. Structures resulting in reduced peak current densities relative to known structures achieve numerous desirable benefits, especially ... | 06/12/2007 |
| 7221238 | Superconducting filter device A compact superconducting filter device can easily change a bandwidth and a center frequency without changing a pattern or shape of the filter. A filter pattern is formed on a substrate made of a dielectric material. The filter pattern is made of a superconductor ma... | 05/22/2007 |
| 7218184 | Superconducting filter A superconducting filter including input/output feeders formed on one surface of a dielectric substrate, resonator patterns formed on one surface of the dielectric substrate, and a dielectric plate mounted on the one surface of the dielectric substrate with a plural... | 05/15/2007 |
| 7174197 | Superconductive filter module, superconductive filter assembly and heat insulating type coaxial cable The present invention relates to superconductive filter technology. According to the arrangement of the superconductive filter (1), a columnar resonating member (23) having a superconductive material formed on the surface thereof is attached at one of ... | 02/06/2007 |
| 7117025 | Varactor tuning for a narrow band filter A method and apparatus for providing dynamic and remote tuning of a cryo-cooled bandpass filter is disclosed. The device includes resonator element and a voltage sensitive element as part of the capacitance in a narrow band filter circuit. A varactor such as a GaAs ... | 10/03/2006 |
| 6980841 | Filter device having spiral resonators connected by a linear section A resonator is formed by forming a microstrip line having an electrical length corresponding to a λ/2 wavelength on a dielectric substrate, forming both side portions of the microstrip line from the center thereof into spiral shapes, making the orientations of the ... | 12/27/2005 |
| 6973708 | Method for reducing AC loss in superconducting coils A method for reducing ac loss in a superconducting coil of cable-in-conduit type superconductor made from chrome-coated compound superconducting strands, characterized in that when a superconducting coil is produced by the wind-and-react technique, bending or twist ... | 12/13/2005 |
| 6934569 | Elliptical resonators with radial current mode and radio frequency filter formed therefrom A resonator for use in a radio frequency filter including a substantially planar resonant portion that is substantially elliptical in plan. The resonant portion is mounted on a dielectric substrate. The resonator is configured to operate in at least a mode in which ... | 08/23/2005 |
| 6897749 | Magnetic energy storage device A superconducting magnetic energy storage (SMES) device including a first coil made of superconducting material, a cooling mechanism for cooling the first coil to superconducting temperatures, a second coil inductively coupled to the first coil for inputting emergy ... | 05/24/2005 |
| 6898450 | High temperature superconducting tunable filter with an adjustable capacitance gap A tunable filter having a fixed substrate, a first and second plate comprising a high-temperature superconductor material on the fixed substrate, a movable substrate, a mechanical driver attached to the fixed substrate and the movable substrate, a floating plate com... | 05/24/2005 |
| 6895262 | High temperature superconducting spiral snake structures and methods for high Q, reduced intermodulation structures Novel structures and methods for forming useful high temperature superconducting devices, most particularly resonators, are provided. Structures resulting in reduced peak current densities relative to known structures achieve numerous desirable benefits, especially ... | 05/17/2005 |
| 6889068 | Heat cutoff signal transmission unit and superconducting signal transmission apparatus A superconducting signal transmission apparatus provided with a vacuum container 11, a superconducting electronic device 12 provided in the vacuum container 11, an input side transmission line 13 and output side transmission line 14 | 05/03/2005 |
| 6876877 | High temperature superconductor tunable filter having a movable substrate controlled by a magnetic actuator A circuit is provided wherein the electronic properties of the circuit are varied by a magnetic actuator. The circuit includes a fixed substrate and a movable substrate. The magnetic actuator comprises a magnetic driver on an upper surface of the fixed substrate tha... | 04/05/2005 |
| 6873864 | Superconductive filter module, superconductive filter assembly and heat insulating type coaxial cable The present invention relates to superconductive filter technology. According to the arrangement of the superconductive filter (1), a columnar resonating member (23) having a superconductive material formed on the surface thereof is attached at one of ... | 03/29/2005 |
| 6791430 | Resonator tuning assembly and method A device and method for tuning a planar filter through a wide range of center frequencies are disclosed. The tuning assembly includes a superconductive tuning tip and an actuator configured and adapted to move the tuning tip through a sufficient range of distances f... | 09/14/2004 |
| 6792299 | Device approximating a shunt capacitor for strip-line-type circuits A closed conductive loop for use in planar circuits to realize shunt capacitors instead of conductive patches is disclosed. The closed conductive loop may be formed on a planar substrate or extend to multiple conductive layers in a multi-layer circuit. The use of cl... | 09/14/2004 |
| 6787798 | Method and system for storing information using nano-pinned dipole magnetic vortices in superconducting materials A method includes providing a superconducting material having pinning sites that can pin magnetic vortices within the superconducting material. The method also includes pinning one or more magnetic vortices at one or more of the pinning sites. An information storage... | 09/07/2004 |
| 6774088 | Rare earth-Ba-Cu complex composition and method of producing superconductor using same A metal complex composition containing complexes having metal species of a rare earth element, barium and copper and ligands of a trifluoroacetic acid or pentafluoropropionic acid ligand, a pyridine ligand and an acetylacetone ligand. A superconductive film may be o... | 08/10/2004 |
| 6759930 | Filter circuit and a superconducting filter circuit A filter circuit includes a first resonator and a second resonator each having a different resonance frequency. The first resonator is included in a first block, and the second resonator is included in a second block. The first block further includes a first delay u... | 07/06/2004 |
| 6751489 | High temperature superconductor mini-filters and mini-multiplexers with self-resonant spiral resonators High temperature superconductor mini-filters and mini-multiplexers utilize self-resonant spiral resonators and have very small size and very low cross-talk between adjacent channels. ... | 06/15/2004 |
| 6731960 | Dual operation mode all temperature filter using superconducting resonators with superconductive/non-superconductive mixture A dual operation mode all temperature filter is provided. The dual operation mode filter is provided with a housing defining at least two cavities, an input port and an output port. It is also provided with a non-superconducting resonator disposed in a first one of ... | 05/04/2004 |
| 6678540 | Transmission line single flux quantum chip-to -chip communication with flip-chip bump transitions A superconductor on-chip microstrip line (2, 4) to off-chip microstrip line (7) transition of low characteristic impedance (15, 20, 22) is realized that obtains a bandwidth of 200 GHz for MCM application while employing solder bump (15, 17) technology to ... | 01/13/2004 |
| 6662029 | High temperature superconducting tunable filter with an adjustable capacitance gap A tunable filter having a fixed substrate, a first and second plate comprising a high-temperature superconductor material on the fixed substrate, a movable substrate, a mechanical driver attached to the fixed substrate and the movable substrate, a floatin... | 12/09/2003 |
| 6633208 | Filter with improved intermodulation distortion characteristics and methods of making the improved filter Multi-stage electric filters with improved intermodulation-distortion characteristics and a method for designing such electric filters is provided. In general, the invention may include a multi-resonator electric filter in which one or more of the resonat... | 10/14/2003 |
| 6580933 | Frequency stable resonator with temperature compensating layers A resonator for rf frequencies, especially microwave, in telecommunications systems, with an extremely stable resonant frequency over a desired operating temperature range, of predetermined width (Y) and thickness (X) and having a predetermined length (Z)... | 06/17/2003 |
| 6546266 | Filter device having independently adjustable filtering characteristics and method of adjusting central frequency of the same A filter device includes a super-conducting type filters connected in series with each other and is accommodated in a vacuum chamber. Operating temperatures of the filters are controlled to different temperatures from the outside of the vacuum chamber ind... | 04/08/2003 |
| 6532377 | Planar filter and filter system using a magnetic tuning member to provide permittivity adjustment There is disclosed a planar filter which can variably control a pass frequency band with a high precision and which is superior in skirt property and little in ripple. A planar filter member and tuning member are disposed opposite to each other via a pred... | 03/11/2003 |
| 6529750 | Microstrip filter cross-coupling control apparatus and method The present invention provides for a method and apparatus to control non-adjacent cross-coupling in a micro-strip filter. In instances of weak cross-coupling, such as a filter circuit on a high dielectric constant substrate material (e.g., LaAIO3 | 03/04/2003 |
| 6518854 | Filter circuit and a superconducting filter circuit A filter circuit includes a first resonator and a second resonator each having a different resonance frequency. The first resonator is included in a first block, and the second resonator is included in a second block. The first block further includes a fi... | 02/11/2003 |
| 6516208 | High temperature superconductor tunable filter A circuit is provided wherein the electronic properties of the circuit are varied by a magnetic actuator. The circuit includes a fixed substrate and a movable substrate. The magnetic actuator comprises a magnetic driver on an upper surface of the fixed su... | 02/04/2003 |
| 6501972 | Parallel plate microwave devices having tapered current interrupting slots A microwave device includes a number of parallel-plate resonators that include at least one dielectric substrate and first and second plates arranged on either side of the substrate. At least one of the plates of each of a number of the parallel-plate res... | 12/31/2002 |
| 6486100 | Method for preparing preferentially oriented, high temperature superconductors using solution reagents A multi-domained bulk REBa2 CU3 Ox with low-angle domain boundaries which resemble a quasi-single domained material and a method for producing the same comprising arranging multiple seeds, which can be small single crystal... | 11/26/2002 |
| 6487427 | Dielectric resonator, dielectric filter, dielectric duplexer, and communications device having specific dielectric and superconductive compositions A compact dielectric resonator of high Qu, in which an electrode formed of an oxide superconducting material is provided on a surface of the dielectric so as to serve as an electrode. A dielectric filter, dielectric duplexer and a communications device, i... | 11/26/2002 |
| 6484043 | Dual mode microwave band pass filter made of high quality resonators The object of the invention is a dual-mode band pass filter consisting of resonators each having a spherically shaped dielectric arranged on at least one high-temperature superconductive film, with a shielding housing, which is arranged over the high-temp... | 11/19/2002 |
| 6480728 | Superconductive non-linear transmission lines and method of construction A non-linear transmission line has high temperature superconductive elements periodically loaded thereon. The elements have non-linear characteristics that provide voltage dependent non-linearity to the transmission line. The line can have a circuit with ... | 11/12/2002 |
| 6470198 | Electronic part, dielectric resonator, dielectric filter, duplexer, and communication device comprised of high TC superconductor In a dielectric resonator, a superconductor is formed on two neighboring surfaces of a cubic dielectric body, and the superconductors formed on each two neighboring surfaces are connected by a silver electrode formed in the vicinity of the edge where the ... | 10/22/2002 |
| 6456861 | High frequency low loss electrode having laminated main and sub conductors A high frequency low loss electrode includes a main conductor and at least one sub-conductors formed along a side of the main conductor. At least one of the at least one sub-conductor has a multi-layer structure in which thin-film conductors and thin-film... | 09/24/2002 |
| 6438395 | High frequency low loss electrode with main and sub conductors A high frequency electrode includes a main conductor and at least two sub-conductors formed along a side of the main conductor. The sub-conductors are formed so that a sub-conductor thereof positioned nearer to the outside has a smaller width.... | 08/20/2002 |
