Improvement of the /spl mu/-Hall magnetic sensor sensitivity at low frequency
IEEE SENSORS JOURNAL(2004)
摘要
We have developed a configuration for precision magnetic measurements associating a /spl mu/-Hall sensor, a modulated ferromagnetic antenna, and an analog electronic circuitry. This association is not only able to remove the 1/f noise of the Hall sensor, but also to achieve an ultimate noise level even lower than thermal white noise of the Hall sensor. The system main characteristics are the follo...
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关键词
Magnetic sensors,Frequency,Sensor phenomena and characterization,Noise level,Thermal sensors,Bandwidth,Magnetic variables measurement,Magnetic modulators,Magnetic circuits,Circuit noise
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