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Proceedings Paper

Thirty-five-GHz downconverter using high-temperature superconductor films
Author(s): Roger J. Forse; Steve Rohlfing
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Paper Abstract

A receiver with an rf band of 34.6 GHz to 35.4 GHz, an integral local oscillator with a frequency of 36.5 GHz, and an IF frequency of 1.1 GHz to 1.9 GHz was designed and fabricated. The rf filter was a three pole distributed design fabricated with High Temperature Superconductor (HTS) films. The IF filter was a 9 pole lumped element design fabricated with HTS films. The local oscillator was a parallel feedback type design using a sapphire resonator shielded by two HTS ground planes. The rest of the elements used normal conductors or semiconductors operated at 77 K. The entire subassembly was integrated into a liquid nitrogen dewar and its performance is reported in the text, with the important figures of merit being low noise figure and low phase noise.

Paper Details

Date Published: 4 January 1994
PDF: 8 pages
Proc. SPIE 2156, High Tc Microwave Superconductors and Applications, (4 January 1994);
Show Author Affiliations
Roger J. Forse, Superconductor Technologies Inc. (United States)
Steve Rohlfing, Superconductor Technologies Inc. (United States)

Published in SPIE Proceedings Vol. 2156:
High Tc Microwave Superconductors and Applications
Robert B. Hammond; Richard S. Withers, Editor(s)

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