Active Superconductive Components for High-Frequency Electronic Circuits


SUPACT - 7334

Keywords superconductivity, Josephson junctions, active devices


Start Date: 15-SEP-92 / Duration: 36 months

[ contact / participants ]


Objectives and Approach

The objective of SUPACT is to develop high-frequency active superconducting components that operate at liquid nitrogen temperatures and make use of the special properties of superconducting circuits (very high magnetic field sensitivity, inherent quantisation and counting mechanisms, low dispersion and loss in high-frequency operation).

The fundamental building-block of these components is the Josephson Junction (JJ), and the first part of the project will concentrate on the fabrication and characterisation of reproducible and reliable JJs, using HTS materials from the YBCO family and step, step edge and bi-epitaxial designs. The junctions will be used as the basis for three demonstrators; a broad-band SQUID, and infrared detector, and ADC demonstration circuits.

Progress and Results

The main achievements during the first year have been:


CONTACT POINT

Dr A. Philips
GEC Hirst Research Centre
Elstree Way
UK - Borehamwood WD6 1RX
tel: + 44/ 953-2030
fax: + 44/ 817-320-200

Participants

GEC MARCONI LTD - UK - C
SIEMENS AG - D - P
LETI CEA-DTA - F - P
TECHNISCHE HOCHSCHULE ILMENAN - D - A
UNIVERSITY OF CAMBRIDGE - UK - A


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SUPACT - 7334, December 1993


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html version of synopsis by Nick Cook