论文信息 - Micro-fluxgate sensor with closed core

Micro-fluxgate sensor with closed core

Abstract Micro-fluxgate sensor with symmetrical core on both sides of the planar rectangular excitation and pick-up coils has substantially improved parameters compared to its single-core predecessor. Almost closed magnetic path for the excitation field allows much deeper saturation of the sensor core, which reduces the perming effect, hysteresis and noise. Perming of maximum 5 μT for 6 mT field shock, 28 V/T sensitivity and 24 nT rms noise were achieved for 2 mm long sensor excited by 1 MHz, 180 mA rms sinewave current, without magnetic feedback.

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