Patent · US Active

Magnetoelectric magnetic field measurement with frequency conversion

US10613159B2 · kind B2 · utility

0Cited by

2References

9Claims

0Family size

Assignee

Christian-Albrechts-Universitaet zu Kiel · DE

Inventors

Patrick Hayes · San Diego, US
Andre Piorra · Kiel, DE
Reinhard Knoechel · Elmshorn, DE
Eckhard Quandt · Heikendorf, DE

Key dates

Filing date	May 31, 2016
Grant date	Apr 7, 2020
Priority date	—
Expiry date	Aug 30, 2036

Classification

Technology area (CPC H)Electricity
CPC primaryH10N30/87
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A magnetic field measuring method using a magnetoelectric composite element as an oscillator, in which a time-dependent measurement magnetic field acts on the magnetostrictive phase of the composite element, and an electrical measurement voltage is tapped off across the piezoelectric phase of the composite element and is used to infer the measurement magnetic field. At least one dielectric phase is connected to the magnetostrictive phase of the composite element by a material bond. When an electrical voltage is applied, the dielectric phase exhibits a change in length, the magnitude of which depends in a non-linear manner on the magnitude of the voltage, and a temporally periodic electrical modulation voltage is applied to the dielectric phase.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.