Title:
【発明の名称】相互変調低減型高Q値構造体のための高温超伝導構造体と方法
Document Type and Number:
Japanese Patent JP2002507359
Kind Code:
A
Abstract:
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 including the reduced intermodulation effects of earlier resonators. In one aspect of this invention, a spiral in, spiral out resonator is provided, characterized in that it has an odd number of long runs, at least equal to five long runs, where the long runs are connected by turns, and wherein there are at least two sequential turns of the same handedness, followed by at least two turns of the opposite handedness. In yet another aspect of this invention, it has been discovered that reducing the size of the input and output pads of HTS resonators increases the relative inductance compared to the capacitance. Yet another resonator structure is a spiral snake resonator having a terminal end disposed within the resonator. A wide in the middle structure and wide at peak current density resonator structures utilize enlarged width portions of the resonator in those areas where current density is largest. In yet another aspect of this invention, operation of resonators in high modes, above the fundamental mode, reduce peak current densities. Resonators operated in modes in which current in adjacent long runs are in the same direction further serve to reduce current densities, and intermodulation effects. Symmetric current structures and modes of operation are particularly advantageous where far field effects are compensated for.
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Inventors:
Cortez, Balaam Quizze Andres Willemsen
Cardna, Albert H
Fenji, Neil Oh
Force, Roger Jay
Cardna, Albert H
Fenji, Neil Oh
Force, Roger Jay
Application Number:
JP50560399A
Publication Date:
March 05, 2002
Filing Date:
June 18, 1998
Export Citation:
Assignee:
SUPERCONDUCTOR TECHNOLOGIES INCORPORATED
International Classes:
C07C19/03; H01F6/06; H01F17/00; H01P7/00; H01P7/08; H03H2/00; H03H5/02; H03H7/01; H03H7/03; H03H1/00; H03H7/075; (IPC1-7): H01P7/00; H01P7/08; H03H5/02
Attorney, Agent or Firm:
Aoyama Ryo (2 outside people)