Journal of Superconductivity

, Volume 10, Issue 2, pp 109–120 | Cite as

Conditions for and limitations of high-power handling capabilities of planar YBa2Cu3O7-x filters

  • M. A. Hein
  • C. Bauer
  • W. Diete
  • S. Hensen
  • T. Kaiser
  • G. Müller
  • H. Piel
Article
Received:

Abstract

The conditions for the design of compact high-power HTS filters are deduced from basic considerations, and related to the microwave properties of the HTS films and the substrates. Potential mechanisms limiting the linear microwave response of HTS films are analyzed systematically. Magnetic and thermal field breakdowns are found to confine the power handling capability to comparable field levels. While magnetic limitation is related to flux penetration at the lower critical field Bc1, thermally induced quenches occur dependent on the presence of defects and on the thermal conductivity of the substrate. The detrimental role of film inhomogeneities for the linear microwave response is confirmed experimentally for microwave fields at 19 GHz and for dc fields at 87 GHz.

Key Words

Epitaxial HTS films power handling capability thermomagnetic microwave field breakdown lower critical field defects 
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Copyright information

© Plenum Publishing Corporation 1997

Authors and Affiliations

  • M. A. Hein
    • 1
    • 2
  • C. Bauer
    • 1
  • W. Diete
    • 1
  • S. Hensen
    • 1
  • T. Kaiser
    • 1
  • G. Müller
    • 1
    • 2
  • H. Piel
    • 1
    • 2
  1. 1.Fachbereich PhysikUniversitÄt WuppertalWuppertalGermany
  2. 2.Cryoelectra GmbHWuppertalGermany

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