Micor Fluxgate Magnetic Sensor Interface Circuits Using △Σ Modulation
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概要
- 論文の詳細を見る
This paper presents high-resolution micro fluxgate magnetic sensor interface circuits using 2nd-order ΔΣ modulation. The fluxgate sensing element is placed in modulation loop in order to reduce the instability due to the use of ferromagnetic core. As one of the integrators, a continuous-time integrator is used, and that is also used for the anti-aliasing filter for phase sensitive detector output. The oversampling A/D conversion using the 2nd-order ΔΣ modulation is useful for the high-precision detection of extremely weak magnetic field in the order of nanotesla. The interface LSI chip using ΔΣ modulation is designed and fabricated. The magnetic field measurement is successfully performed using the fabricated interface LSI chip and a fluxgate sensing element.
- 社団法人 電気学会の論文
著者
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TADOKORO Yoshiaki
Toyohashi University of Technology
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KAWAHITO Shoji
Toyohashi University of Technology
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Tadokoro Yoshiaki
Dept. Of Information And Computer Sciences Toyohashi University Of Technology
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Mizuno Kentaro
Toyota Central R & D Labs. Inc.
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TABATA Osamu
Ritsumeikan University
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Tadokoro Y
Dept. Of Information And Computer Sciences Toyohashi University Of Technology
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KOGA Shuji
Toyohashi University of Technology
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YAMASAWA Akira
Toyohashi University of Technology
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