| 发明名称 |
Method of Measuring a Weak Magnetic Field and Magnetic Field Sensor of Improved Sensitivity |
| 摘要 |
A magnetic field sensor comprises a magnetoresistive element ( 10 ) biased with a current (i) in order to measure an external magnetic field (H<SUB>ext</SUB>). A magnetic modulation field (H<SUB>m</SUB>) is applied to a sensitive region of said sensor and the sensor comprises a synchronous detection device ( 14 ) for measuring the amplitude of an odd harmonic of the output signal.
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| 申请公布号 |
US2008224695(A1) |
申请公布日期 |
2008.09.18 |
| 申请号 |
US20050722692 |
申请日期 |
2005.12.19 |
| 申请人 |
THALES |
发明人 |
LEROY PAUL;VAN DAU FREDERIC NGUYEN;FRIEDERICH ALAIN |
| 分类号 |
G01R33/09 |
主分类号 |
G01R33/09 |
| 代理机构 |
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代理人 |
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