Fundamentals of applied electromagnetics
Fundamentals of applied electromagnetics
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Design of air-core inductive sensors in printed circuit board technology is presented. Comparative analysis with existing hand made inductive sensors is performed with respect to inductance, resistance, and sensitivity to activation when a soft ferromagnetic material is placed in the center of the sensor. Optimization is performed in a finite element model. This technology allows flexibility in design, automation of production and ease of possible integration with supplying electronics. The basic switch function of the inductive sensor can be extended to two-dimensional movement detection for pointing devices.