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Fundamentals and applications of high temperature superconducting microwave and milimeter wave devices.

[In Japanese. / En japonais.]

Author(s) : OHSHIMA S., KUSUNOKI M.

Type of article: Article

Summary

This paper discusses the microwave and milimeter wave fundamentals and applications of high temperature superconductors. First, a high temperature superconducting filter subsystem for a base station is described as an example of microwave devices. In the USA, over 1000 systems are already working as filter subsystems in 2 G mobile telephone base stations. In Japan, a field trial was carried out for a filter subsystem of an IMT-2000 base station. As the result, the effectiveness of the superconducting filter subsystem was clarified. Therefore, the demand for superconducting filter subsystems for base stations will increase in the future. A SIS mixer and superconducting calorimeter were described as examples of milimeter and sub-milimeter wave devices. Using a Nb/A1Ox/Nb SIS junction and X-ray calorimeter, which utilized micromachine technology, the resolution of such devices was quite high compared to that of conventional devices.

Details

  • Original title: [In Japanese. / En japonais.]
  • Record ID : 2004-2648
  • Languages: Japanese
  • Source: Cryogenics/ Cryog. Eng. - vol. 38 - n. 1
  • Publication date: 2003
  • Document available for consultation in the library of the IIR headquarters only.

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