Characterization of a Magnetic Field Probe for Electromagnetic Interference Current Measurement

Abstract:

This paper investigates a miniature rectangular triplate-printed antenna, which acts as a magnetic field probe to estimate amplitude of the RF Electromagnetic Interference current by non-contact measurement. To characterize the probe, a current transfer factor defined as the ratio of the probed voltage over the current is investigated by measuring the frequency-dependent S-parameter. Moving and rotating the probe will change the current transfer factor, and then significantly affect the estimation of the RF current under detection. To specify the application of the probe, the spatial dependences of the current transfer factor are systematically studied, and in agreement with the calculation of the magnetic field generated by the RF current.

• Periodical: Applied Mechanics and Materials (Volumes 568-570)
• Pages: 30-35
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.568-570.30
• Online since: June 2014
• Authors: Fan Li, Wen Xiao Fang*, Liang Lei, Yuan Liu, Chun Lei Shi
• Keywords: Current Transfer Factor, Electromagnetic Interference Current, Magnetic Probe

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