Electromagnetic field probes inevitably change the original field distribution to some extent when they are positioned close to a device. That change affects measurement accuracy and the device operation. We have developed optical magnetic field probes, which comprise a loop antenna element and an electro-optic crystal, to perform magnetic nearfield measurement with high accuracy in the GHz fre...

Ján MOLNÁR, Irena KOVÁČOVÁ Department of Theoretical Electrical Engineering and Electrical Measurement, Faculty of Electrical Engineering and Informatics, Technical University of Košice, Letná 9, 042 00 Košice, E-mail: [email protected] Department of Electrical Engineering, Mechatronics and Industrial Engineering, Faculty of Electrical Engineering and Informatics, Technical University of Košic...

This paper surveys the instrumentation, calibration procedures, measurement techniques, and standards which can be used to characterize extremely low frequency (ELF) electric and magnetic fields. While the focus of the paper is on power frequency and power frequency harmonic fields, the measurement methods discussed are appropriate in principle for other ELF frequencies.

Neutron electric dipole moment measurement (EDM) requires precise control of the electric and magnetic field in the test cell. External magnetic field should be shielded out completely. As the experiment will be conducted in cryogenic environment (~ 4K), conventional μ-metal shield cannot work in low temperature. Shielding property of another magnetic material, Metglas, was study in this projec...

Current electronic circuits are characterised by their compact design of miniaturisation; however, such a feature has also contributed to the rise electromagnetic compatibility issues. This study introduces technique develop magnetic field probe for near-field measurement. The aims at performing debugging interference on an integrated circuit. Certain processes, as designing microstrip line in ...

In a strapdown magnetic compass, heading angle is estimated using the Earth's magnetic field measured by Three-Axis Magnetometers (TAM). However, due to several inevitable errors in the magnetic system, such as sensitivity errors, non-orthogonal and misalignment errors, hard iron and soft iron errors, measurement noises and local magnetic fields, there are large error between the magnetometers'...

The principal objective was to measure the magnetic fields occurring in dental surgeries at simultaneous subtraction of direct ground component of the magnetic field. A specifically designed instrument with the Hall probe was used for the measurement. It consisted of two amplifiers and a low frequency filter. Its task was to measure mean square values of the field (RMS) dependent on the positio...