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| Number | Title | Issue Date |
| 7247603 | Charge dissipative dielectric for cryogenic devices A Superconducting Quantum Interference Device (SQUID) is disclosed comprising a pair of resistively shunted Josephson junctions connected in parallel within a superconducting loop and biased by an external direct current (dc) source. The SQUID comprises a semiconduc... | 07/24/2007 |
| 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 |
| 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 |
| 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 |
| 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 |
| 6823201 | Superconducting microstrip filter having current density reduction parts A superconducting microstrip filter capable of achieving an improvement of power resistance without enlarging the overall size and while maintaining steep cut characteristics. This filter has a resonator section including at least one resonator. This resonator forms... | 11/23/2004 |
| 6809042 | Oxide superconductor thick film and method for manufacturing the same The present invention provides an oxide superconductor thick film which is formed on a substrate or a board and has a high Jc and Ic and a method for manufacturing the same. Predetermined amounts of materials containing elements of Bi, Pb, Sr, Ca and Cu are weighed,... | 10/26/2004 |
| 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 |
| 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 |
| 6653917 | High-temperature superconductor low-pass filter for suppressing broadband harmonics Disclosed is a high-temperature superconductor low-pass filter for removing broadband harmonics in a wireless communication system. The high-temperature superconductor low-pass filter includes a coupled line section and a transmission line section, in whi... | 11/25/2003 |
| 6635368 | HTS film-based electronic device characterized by low ELF and white noise A film-based HTS device comprises a substrate and a superconducting film. A peripheral portion of the film is a-axis-aligned material which is so situated on the substrate as to describe a-b planar barriers which are perpendicular to the substrate and whi... | 10/21/2003 |
| 6610633 | Superconductor device A lanthanum aluminate (LaAlO3) substrate on which thin films of layered perovskite copper oxide superconductors are formed. Lanthanum aluminate, with a pseudo-cubic perovskite crystal structure, has a crystal structure and lattice constant that... | 08/26/2003 |
| 6592782 | Materials and methods for the separation of oxygen from air Metal oxides particularly useful for the manufacture of catalytic membranes for gas-phase oxygen separation processes having the formula: Ax A'x' A"2-(x+x') By Fey' B"2-(y+y') O5+z wh... | 07/15/2003 |
| 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 |
| 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 |
| 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 |
| 6436317 | Oxide bronze compositions and textured articles manufactured in accordance therewith Oxide bronze compositions and articles manufactured in accordance therewith are provided. The oxide bronze compositions have the general formula Ax BOy, in which A comprises an alkali, alkaline earth or rare earth metal and in which ... | 08/20/2002 |
| 6424846 | Spiral snake high temperature superconducting resonator for high Q, reduced intermodulation 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, ... | 07/23/2002 |
| 6381478 | Superconductive high-frequency circuit element with smooth contour A high-frequency circuit element that realizes a high degree of input-output coupling without causing an increase in loss and irregularity in impedance. A resonator made of a conductor film is formed on a substrate made of a dielectric monocrystal or the ... | 04/30/2002 |
| 6370404 | 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.... | 04/09/2002 |
| 6360112 | High-frequency circuit element having a superconductive resonator tuned by another movable resonator In a small transmission line type high-frequency circuit element that has small loss due to conductor resistance and has a high Q value, an error in the dimension of a pattern, etc. can be corrected to adjust element characteristics. An elliptical shape r... | 03/19/2002 |
| 6360111 | High-frequency circuit element having a superconductive resonator with an electroconductive film about the periphery In a small transmission line type high-frequency circuit element that has small loss due to conductor resistance and has a high Q value, an error in the dimension of a pattern, etc. can be corrected to adjust element characteristics. An elliptical shape r... | 03/19/2002 |
| 6337149 | Superconductor coplanar waveguide A lanthanum aluminate (LaAlO3) substrate on which thin films of layered perovskite copper oxide superconductors are formed. Lanthanum aluminate, with a pseudo-cubic perovskite crystal structure, has a crystal structure and lattice constant that... | 01/08/2002 |
| 6305069 | Method of preparing oxide superconductive wire Provided are an oxide superconducting wire which maintains a high critical current density and has a small current drift with small ac loss when the same carries an alternating current and a method of preparing the same, and a cable conductor which is for... | 10/23/2001 |
| 6263219 | SQUID formed on a sapphire substrate and method for manufacturing the same A SQUID made of an oxide superconducting thin film is formed on a sapphire substrate. CeO2 film, RBa2 Cu3 O7-x film ("R" indicates a rare earth element chosen among a group formed of Yb, Er, Ho, Y, Dy, Gd, Eu, S... | 07/17/2001 |
| 6226858 | Method of manufacturing an oxide superconductor wire A method of manufacturing a superconductor wire which comprises: rolling a polycrystalline metallic substrate; heating the rolled polycrystalline metallic substrate at a temperature of 900° C. or more in a non-oxidizing atmosphere, whereby obtaining a ro... | 05/08/2001 |
| 6216020 | Localized electrical fine tuning of passive microwave and radio frequency devices A method and apparatus for the localized electrical fine tuning of passive multiple element microwave or RF devices in which a nonlinear dielectric material is deposited onto predetermined areas of a substrate containing the device. An appropriate electri... | 04/10/2001 |
| 6187717 | Arrangement and method relating to tunable devices through the controlling of plasma surface waves A tunable microwave monolithic integrated circuit includes a dielectric material with a variable dielectric constant. A superconducting material with a negative dielectric constant is provided which is arranged in relation to the dielectric material in su... | 02/13/2001 |
| 6185441 | Arrangement and method relating to coupling of signals to/from microwave devices An arrangement for coupling electro magnetic waves, particularly microwaves, into and/or out of a device which includes a dielectric resonator having a non-linear dielectric substrate with a high dielectric constant and a coupling loop. The dimensions of ... | 02/06/2001 |
| 6178339 | Wireless communication filter operating at low temperature A high power filter apparatus which is used in a mobile communication base station or the like is provided wherein the temperature stability and frequency selection are excellent, an insertion loss is small, the size is small, power consumption is low and... | 01/23/2001 |
| 6163713 | High frequency transmission line capable of improving an intermodulation distortion characteristic in a high frequency device In a high frequency transmission line having a dielectric substrate and a conductor line which is provided on the dielectric substrate for allowing electric current to flow therethrough, the conductor line has a non-grain-boundary oxide superconductor lay... | 12/19/2000 |
| 6156706 | Layer structure with an epitaxial, non-c-axis oriented HTSC thin film The invention relates to a layered structure with at least one epitaxial, non-c-axis oriented high Tc superconductor (HTSC) thin film with an approximately tetragonal structure, in which the thin film having an orientation (-1,0,1) is formed on a cubic or... | 12/05/2000 |
| 6140275 | Ceramic substrate for bi-cuprate superconductors and a process for preparing the same A novel ceramic substrate useful for the preparation of superconductors, said substrate having the formula Ba2 DyMO5.5 where M represents at least one of the metals Zr, Sn and Hf and a process for the preparation of said ceramic subs... | 10/31/2000 |
| 6130189 | Microwave hairpin-comb filters for narrow-band applications Microwave hairpin-comb filters utilize a plurality of hairpin (i.e., folded) half-wavelength microstrip or stripline resonators arranged side-by-side and all with the same orientation. The coupling regions between resonators extend parallel to the sides o... | 10/10/2000 |
| 6130591 | Band-pass filter comprising series coupled split gap resonators arranged along a circular position line Herein disclosed is a band-pass filter for a radio wave having a wavelength range of a high frequency, such as a microwave and a milliwave. The band-pass filter comprises: a dielectric substrate; input and output terminals; and a plurality of conductive s... | 10/10/2000 |
| 6121205 | Bulk superconductor and process of preparing same A bulk superconductor including a plurality of units each composed of a substrate and a superconductive layer of R--Ba--Cu--O, where R is selected from La, Nd, Sm, Eu, Gd, Y, Dy, Ho, Er, Tm, Yb and mixtures thereof, formed on the substrate. The units are ... | 09/19/2000 |
| 6122533 | Superconductive planar radio frequency filter having resonators with folded legs A planar filter for performing signal filtering at radio frequencies is provided. The planar filter can include asymmetrical resonators, wherein each resonator is asymmetrical about a longitudinal center axis through the resonator. In addition, the resona... | 09/19/2000 |
| 6117824 | Superconductor microstrip transmission line A lanthanum aluminate (LaAlO3) substrate on which thin films of layered perovskite copper oxide superconductors are formed. Lanthanum aluminate, with a pseudo-cubic perovskite crystal structure, has a crystal structure and lattice constant that... | 09/12/2000 |
