Wideband Three-axis Magnetic Field Sensor

In this paper, a wideband three-axis magnetic field sensor operating in the frequency range from 50 Hz to 100 kHz is presented. It consists of a three-axis coil probe connected to an analog processing circuit, which is able to accurately reconstruct the waveforms of the three orthogonal components of the incident magnetic flux density. The sensor can be used in conjunction with common measuring equipment, such as a digital oscilloscope, but highest performance is obtained if used in conjunction with a data acquisition device and dedicated measurement software. The sensor features flat frequency response and high dynamic range, and can be used for both human exposure assessments and electromagnetic compatibility applications.