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http://dx.doi.org/10.4283/JKMS.2012.22.6.200

Operation Frequency Dependence of Output of Orthogonal Fluxgate Sensor Fabricated with Ferrite Core  

Shin, Kwang-Ho (Department of Information & Communication Engineering, Kyungsung University)
Abstract
In this study, we have investigated that the operation frequency dependences of the output properties of the orthogonal fluxgate sensor which was fabricated with a ferrite core. An orthogonal fluxgate sensor should be operated in as high as possible frequency to enhance its sensitivity in the case of small sized sensor, because sensitivity of the sensor is proportional to cross section area, winding number and operation frequency. In this study, we investigated the correspondence of the frequency dependence of output and the reactance (inductance and capacitance) of pickup coil and cable. Experimental results represented that we could obtain maximum output (= sensitivity) at optimal frequency which is near LC resonance frequency of the pickup coil and cable.
Keywords
orthogonal fluxgate; ferrite core; operation frequency; LC resonance;
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