Magnetometer input circuit for infrared detectors
US5126568A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 19, 1991 |
| Grant date | Jun 30, 1992 |
| Priority date | — |
| Expiry date | Jul 19, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/087
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and an input circuit are disclosed for interfacing infrared detector elements to signal processing circuitry. The input circuit comprises a current loop for generating a magnetic field and a sensing circuit for measuring the strength of the field. Both the current loop and the sensing circuit are fabricated proximate each other. The current loop is connectable to an infrared detector such that the magnetic field generated by the current loop is proportional to the output of the infrared detector element. The input circuit isolates the detector element from bias voltages generated by the associated input circuitry and therefor reduces 1/f noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.