The evaluation of the magnetic field below 30MHz in an open area test site

概要

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Photovoltaic generation systems and power line communication systems radiate EM-waves below 30MHz. In this situation, measurement sites for the EM-waves are required. However, evaluation methods of the site below 30MHz are not established yet. In this paper, we measure the magnetic behavior below 30MHz in a OATS (Open Area Test Site), and also simulate with a moment method. As the results, the deviation between the measurement and calculation data became within 2.5dB. Therefore, we confirm that this paper’s method of measurement can be used to evaluate the measurement site in below 30MHz.