IEEE MTT-S International Microwave Symposium digest

S-parameter measurements and applications of superconducting flux flow transistors

J. Martens, VINCENT M. HIETALA, T. E. Zipperian, David S. Ginley, Chris P. Tigges, Julia M. Phillips

Published Dec 9, 2002• 2 citations

Abstract

Microwave two-port S-parameter measurements and modeling were performed on superconducting flux flow transistors. These transistors, based on the magnetic control of flux flow in an array of high-temperature superconducting weak links, can exhibit significant available power gain at microwave frequencies (over 20 dB at 7-10 GHz in some devices). The input impedance is largely inductive, while the output impedance is resistive and inductive. These devices are potentially useful in numerous applications, including matched amplifiers.>

DOI: 10.1109/mwsym.1991.147243

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