PCB fluxgate sensor—depicting the geometric aspects: angular difference between core and coil axis and longitudinal shift . The upright sections of the core are clearly visible as not covered by the pick-up/compensating coil.
Measurement setup used for determining the cross-field response. Sensor (not to scale) shown having the main-field Bm in sensitive direction and the cross-field Bc in perpendicular direction.
Cross-field response (perpendicular direction to the sensor core) shown for five different fields in main direction, offset due to main field removed.
Cross-field response (perpendicular direction to the pick-up coil) shown for three different fields in main direction, and also for modified detection electronics (thin trace).
The same data as in Fig. 3 , but expressed as sensitivity change on applied cross-field.
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