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US 5,307,068 AGranted
Tunable high-frequency devices
AssigneeThomson-CSF
InventorPierre Hartemann
Life of this patent
Estimating the term…
Abstract
A tunable high-frequency device using a superconductive thin layer with a thickness smaller than the thickness of penetration of a magnetic field is positioned on a dielectric layer. Also included is a means for varying the density of the Cooper pairs of the superconductive thin layer.
Claims12
A tunable high-frequency device comprising:
- at least one superconductive thin layer, positioned on a first dielectric layer;
- means for applying a first magnetic field wherein the length of penetration .lambda..sub.L of said first magnetic field is less than the thickness of said superconductive thin layer;
- means for varying the density of Cooper pairs of said superconductive thin film layer wherein said means for making variations is independent of said first magnetic field and wherein said means for making variations is one of a means for applying a current for the polarization of said superconductive thin film, a means for applying a second magnetic field to said superconductive layer, and a means for applying an optic radiation to said superconductive thin layer.
An electromagnetic wave deflector including a plurality of high frequency devices in the same plane, each of said high frequency devices comprising:
- a superconductive thin layer having a thickness smaller than the length of penetration .lambda..sub.L of a first magnetic field, said superconductive thin layer being positioned on a first dielectric layer;
- means independent of said first magnetic field for varying the density of Cooper pairs of said superconductive thin layer;
- and
- a metal layer attached to said first dielectric layer on a side of said first dielectric layer which is opposite said thin superconductive layer wherein the thickness of the dielectric layer along the direction of propagation of a wave to be phase-shifted is substantially proportional to a multiple of half of the wavelength to be phase-shifted.
1 more element
Dependencies are inferred from the claim text.