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arXiv · 2509.24944

Experimental Study of Magnetic Near-Field Microstrip Electronic Probe for PCB EMC Emission Measurement

Hongchuan Jia·Fayu Wan·Vladimir Mordachev·Jérôme Rossignol·Glauco Fontagalland·Nour Murad·Blaise Ravelo
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Abstract

An experimental study on magnetic near-field (NF) scanning of printed circuit board (PCB) emission radiation is developed in this paper. The design and installation of the electromagnetic (EM) NF scanner is introduced. The test bed of magnetic NF emission in the microwave frequency range is described. The methodology of the microstrip magnetic NF probe is discussed. The probe calibration process was performed following the IEC 61967-1 NF scanning standard. The NF scanner functioning is tested with passive microstrip circuit square loop probe and device under test (DUT) PCB radiation in the test plan positioned at 1-mm above the ground plane. Based on the standard test with I-shape 50-$Ω$ transmission line (TL), the calibration process of radiated magnetic field was validated by comparison between HFSS__ simulation and experimentation in very wideband frequency from 0.1-GHz to 3-GHz. Then, a nonstandard TL based DUT was experimented. Accordingly, the cartographies of scanned magnetic NF at two different test frequencies, 2 GHz and 3 GHz, are discussed. The NF scanner is under development for targeting the EMC radiated emission of PCB dedicated to operate in 6G wireless communication.

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Hongchuan Jia, Fayu Wan, Vladimir Mordachev, Jérôme Rossignol, Glauco Fontagalland, Nour Murad, Blaise Ravelo. 2025-09-29. Experimental Study of Magnetic Near-Field Microstrip Electronic Probe for PCB EMC Emission Measurement. https://arxiv.org/abs/2509.24944

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