Magnetic Sensor Coil Shape Geometry and Bandwidth Assessment

There are quite many scientific examples out there regarding on-line measurements of fast pulses and fast partial discharge phenomena [1] [2] [3] using magnetic sensor coils. In these examples, most attention has been paid on the results obtained with specific design of magnetic sensor. There is though a lack of actual design consideration of the sensor regarding its target bandwidth and sensitivity. In current paper the focus is put on the design aspects of such a magnetic loop sensor. Geometrical shape of the magnetic sensor loop is considered and coils with different shapes are put into tests to determine their real parameters.