Patent ID: 6403977
Filing Date: 2002-06-11
Classification: H01L

Abstract:
A double-sided high-temperature superconducting flux-flow transistor, comprising:a means for controlling line current composed of a first high temperature superconducting material is deposited on an input side of a dielectric substrate; a means for weak-link current composed of a second high temperature superconducting material is deposited on an output side of said dielectric substrate; said control line means being thicker than said weak link means; said control line means having a plurality of AC input contact points, said plurality of AC contact points forming a plurality of inductors; said weak-link means having at least two DC contact points having opposing longitudinal weak-link segments connected at a central point, with a first of said longitudinal segments being shorter than a second of said longitudinal segments; each of said plurality of inductors overlapping one of said weak-link segments; said plurality of inductors creating a magnetic field producing a group of cylindrical vortices within said weak-link segments; and said group of cylindrical vortices producing a frequency modulation and an RF characterization resulting in a clear flux-flow and a modulating frequency.