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Symmetrical Core Improves Micro-Fluxgate Sensors

By P. Ripka, S. O. Choi, A. Tipek, S. Kawahito and M. Ishida

Abstract

Microfluxgate sensor with flat coil and double-sided symmetrical core has significantly improved parameters over the original asymmetric single-sided core design. The magnetic circuit of the new sensor is more closed and so the core is deeper saturated. The sensor hysteresis was decreased from 30 T to 2.5 T (for full range). Noise level was decreased from 242 nT to 27 nT rms (0.1 mHz to 10 Hz.). The sensor linear range was extended from 600 T to 1 mT. Perming was reduced from 50 µT to 5 µT after the field shock of 6 mT

Topics: Fluxgate, Magnetic sensors, Magnetometers
Year: 2000
OAI identifier: oai:CiteSeerX.psu:10.1.1.32.883
Provided by: CiteSeerX
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