The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 10, 2004
Filed:
Nov. 16, 2001
Nils Schopohl, Reutlingen, DE;
Christoph Haeussler, Stuttgart, DE;
Joerg Oppenlaender, Kirchentellinsfurt, DE;
Qest Quantenelektronische Systeme, Böblingen, DE;
Abstract
A device is proposed for high-resolution measurement, in particular for high-resolution absolute measurement of magnetic fields, having a network ( ) of transitions ( ) between superconductors ( ) which exhibit Josephson effects, called junctions below, the network comprising closed meshes ( ), denoted by cells below, which in each case have junctions ( ), which junctions are connected in a superconducting fashion, and at least three of these cells being connected in a superconducting and/or nonsuperconducting fashion. The object of the invention consists in further developing this device in such a way that it is possible to make absolute measurements of magnetic fields in a highly sensitive fashion. This object is achieved by virtue of the fact that the junctions ( ) of the at least three cells ( ) can be energized in such a way that a time-variant voltage drops in each case across at least two junctions of a cell, the time average of which voltage does not vanish, and in that the at least three cells are configured differently geometrically in such a way that the magnetic fluxes enclosed by the cells in the case of an existing magnetic field differ from one another in such a way that the frequency spectrum of the voltage response function has no significant &PHgr; -periodic component with reference to the magnetic flux.