Device for sensing a magnetic field

US11415642B2 · kind B2 · utility

Assignees

• CONSIGLIO NAZIONALE DELLE RICERCHE · IT
• Universita' Degli Studi “G. d'Annunzio” Chieti-Pescara · IT
• QUANTIFIED AIR BV · NL

Inventors

• Luca Pellegrino · Ciambrin, IT
• Nicola Manca · Albenga, IT
• Daniele Marre′ · Ciambrin, IT
• Federico Remaggi · Ciambrin, IT
• Riccardo Bertacco · Milano, IT
• Federico Maspero · Milano, IT
• Warner Jurriën Venstra · Leiden, NL
• Stefania Della Penna · Pescara, IT
• Ingo Hilschenz · Chieti, IT
• Alexei Kalaboukhov · Mölnlycke, SE
• Filomena Lombardi · Gothenburg, SE

Key dates

• Filing date: Apr 15, 2021
• Grant date: Aug 16, 2022
• Expiry date: Apr 15, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/0354
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A device for sensing a magnetic field, comprising a closed superconducting loop configured to collect a magnetic field to be sensed, hereinafter external magnetic field, the closed superconducting loop having a path width (wp) and being provided with a constriction having a width (wc) narrower than the path width, the constriction generating a non-uniform magnetic field, hereinafter internal magnetic field, in response to the external magnetic field, a vibrating mechanical oscillator coupled to, or formed by the constriction and responsive to the internal magnetic field, and a detector configured to detect deflection or vibration of the mechanical oscillator and providing a signal indicative of the deflection or vibration.