Weak field measuring magnetometer with flux modulated current conducting Josephson junction
US4851776A · kind A · utility
13Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1987 |
| Grant date | Jul 25, 1989 |
| Priority date | — |
| Expiry date | Dec 16, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/0356
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sensitive magnetometer for determining the strength of a very weak magnetic field having at least one Josephson junction through which current induced by the magnetic field and modulated in accordance with a modulation magnetic flux which varies periodically, is conducted. Harmonic separating means separately detects a selected even harmonic component from the current flowing in the Josephson junction to obviate the need for null flux calibration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.