Santa Barbara, CA, United States

Superconductor Technologies Inc.

www.suptech.com
Santa Barbara, CA, United States
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A coated conductor comprises a substrate supporting a ReBCO superconductor adapted to carry current in a superconducting state. The superconductor is characterized in having peaks in critical current (J_(c)) of at least 0.2 MA/cm^(2 )in a magnetic field of about 1 Tesla when the field is applied normal to the surface of the superconductor and when the field is applied parallel to the surface of the superconductor, and further characterized in that the superconductor includes horizontal defects and columnar defects in a size and an amount sufficient to result in the said critical current response. The conductor is characterized in that the ratio of the height of the peaks in the J_(c )is in the range from 3:1 with the ratio of the field perpendicular (0 degrees) to the field parallel (+/90 degrees) to the range from 3:1 with the ratio of the field parallel to the field perpendicular.


Patent
Superconductor Technologies Inc. | Date: 2011-10-26

A tunable RF filter comprises a signal transmission path having an input and output, a plurality of resonant elements disposed along the signal transmission path between the input and output, and a set of non-resonant elements coupling the resonant elements together to form a stop band having a plurality of transmission zeroes corresponding to respective frequencies of the resonant elements, and at least one sub-band between the transmission zeroes. The set of non-resonant elements comprises a first plurality of non-resonant elements respectively coupled in parallel with the resonant elements, and a second plurality of non-resonant elements respectively coupled in series with the resonant elements. The first plurality of non-resonant elements comprises at least one variable non-resonant element for selectively introducing at least one reflection zero within the stop band to create a pass band in one of the one sub-band(s) without varying any of the second plurality of non-resonant elements.


Patent
Superconductor Technologies Inc. | Date: 2011-04-25

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.


Patent
Superconductor Technologies Inc. | Date: 2011-08-26

A device for fabricating thin films on a substrate includes a vacuum chamber, a rotatable platen configured to hold one or more substrates within the vacuum chamber, and a housing disposed within the vacuum chamber. The housing contains a heating element and is configured to enclose an upper surface of the platen and a lower portion configured to partially enclose an underside surface of the platen which forms a reaction zone. A heated evaporation cell is operatively coupled to the lower portion of the housing and configured to deliver a pressurized metallic reactant to the reaction zone. The device includes a deposition zone disposed in the vacuum chamber and isolated from the reaction zone and is configured to deposit a deposition species to the exposed underside of the substrates when the substrates are not contained in the reaction zone.


Patent
Superconductor Technologies Inc. | Date: 2015-11-06

A reactor apparatus includes a first chamber coupled to a first source of vacuum, a monitor chamber isolated from the first chamber and coupled to a second source of vacuum, and at least one removable deposition monitor disposed in the monitor chamber.


Patent
Superconductor Technologies Inc. | Date: 2011-12-23

A reactor apparatus includes a first chamber coupled to a first source of vacuum, a monitor chamber isolated from the first chamber and coupled to a second source of vacuum, and at least one removable deposition monitor disposed in the monitor chamber.


Patent
Superconductor Technologies Inc. | Date: 2014-04-17

The films of this invention are high temperature superconducting (HTS) thin films specifically optimized for microwave and RF applications. In particular, this invention focuses on compositions with a significant deviation from the 1:2:3 stoichiometry in order to create the films optimized for microwave/RF applications. The RF/microwave HTS applications require the HTS thin films to have superior microwave properties, specifically low surface resistance, R_(s), and highly linear surface reactance, X_(s), i.e. high J_(IMD). As such, the invention is characterized in terms of its physical composition, surface morphology, superconducting properties, and performance characteristics of microwave circuits made from these films.


Patent
Superconductor Technologies Inc. | Date: 2012-04-04

The present invention is directed to an apparatus for generating films on a substrate, the apparatus comprising a deposition chamber and a monitor chamber coupled to the deposition chamber, the monitor chamber being connected to a first source of vacuum and the deposition chamber being connected to a second source of vacuum. Further, the apparatus comprises at least one deposition monitor contained in the monitor chamber and a valve separating an interior of the monitor chamber from the deposition chamber.


Grant
Agency: Department of Defense | Branch: Air Force | Program: STTR | Phase: Phase I | Award Amount: 100.00K | Year: 2011

ABSTRACT: Superconductor Technologies Inc. (STI) in collaboration with the laboratories of Professor R. C. Dynes at UC San Diego and UC Berkeley, propose to thoroughly explore using arrays of superconducting quantum interference devices (SQUID) for high frequency (HF) direction finding (DF) signals intelligence (SIGINT). The primary focus of our research program will be on the development of the superconducting components, namely the SQUID array and receive antenna. SQUID arrays and a test coil will be built using STI superconducting materials. In parallel, we will perform the other necessary studies for the development of a prototype system such as evaluating the noise performance of a SQUID array operating on a STI cryocooler and testing of high speed SQUID read-out electronics. We believe that the results of these experiments will enable a much improved DF technology for a possible phase II prototype unit. BENEFIT: We anticipate a significant number of benefits from this research. Those directly related to a DF system include: * Reduced antenna size for mobile platforms and stealth aircraft * Larger dynamic range to enhance detectibly of small signals in the presence of large interferences In addition, our work on Josephson junctions may benefit other prospective active superconducting devices such as Josephson waveform generators for RADAR or Josephson terahertz oscillators. Furthermore, coils fabricated from high-Tc coated conductors may benefit sensitive bio-magnetic medical imaging such as magneto-cardiogram (MCG).


Grant
Agency: Department of Defense | Branch: Air Force | Program: STTR | Phase: Phase I | Award Amount: 99.99K | Year: 2012

ABSTRACT: This work will develop high-transition temperature (HTS) Superconducting QUantum Interference Devices (SQUIDs) for wide-bandwidth receiver applications. Two dimensional arrays of ion damaged Josephson junctions will be designed and simulated to achieve a highly linear voltage response for unlocked operation. A variety of thin film YBCO HTS materials will be grown and patterned with ion damage junctions to investigate how the unique properties of each material affect the uniformity and ICRN properties of the junctions. Prototype broadband receiver elements will be investigated using HTS tapes. High quality YBCO tapes from STI will be patterned as coplanar waveguides and tested for their viability as a new interconnect technology. Two dimensional SQUID arrays with ion damage junctions will be fabricated on the HTS tapes to determine the feasibility of the tape structure for SQUID array devices. BENEFIT: This work will advance ion damage SQUID devices through enhanced engineering knowledge of materials selection to achieve the desired HTS device properties specific for receiver applications. SQUID devices directly transduce the magnetic flux threading the SQUID loop and the superconducting energy gap of typical HTS YBCO thin films are in the 100s of GHz to THz. Therefore SQUID devices are natively broadband and capable of operating at microwave frequencies. Simulations are anticipated to enable the engineering of high linearity SQUID arrays as required for unlocked operation. Ultimately, wideband receivers incorporating these SQUID arrays may be realized with much smaller weight and size than conventional systems.

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