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Characterization of Nb-Based Superconducting Microstrip Lines Around the Gap Frequency

  • Sheng-Cai Shi
  • Chi-Chung Chin
  • Wen Zhang
Article

Abstract

Submillimter-wave SIS (superconductor-insulator-superconductor) mixers usually adopt SIS junctions associated with an integrated tuning circuit, which tunes out the junction's geometric capacitance and is typically an inductive thin-film superconducting microstrip line. This paper mainly investigates the characteristic of Nb-based superconducting microstrip lines around the junction's gap frequency, at which the surface resistance of Nb films becomes considerable, and its effect on the performance of SIS mixers.

SIS submillimeter waves microstrip tunning circuit 

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Copyright information

© Plenum Publishing Corporation 2000

Authors and Affiliations

  • Sheng-Cai Shi
    • 1
  • Chi-Chung Chin
    • 2
  • Wen Zhang
    • 1
  1. 1.Purple Mountain ObservatoryNanjingPeople's Republic of China
  2. 2.Institute of Astronomy and AstrophysicsNankang, TaipeiTaiwan

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