A Novel Broadband High Sensitivity Current Probe Design and Analysis for Conducted Emission Testing

Current probe is one of the most important measurement equipments in electromagnetic compatibility (EMC) for electromagnetic conducted emission testing. The measurement sensitivity of the current probe can directly affect the testing results. A novel broadband high sensitivity current probe is desig...

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Bibliographic Details
Published in:IOP conference series. Earth and environmental science 2018-10, Vol.186 (3), p.12006
Main Authors: Miao, Sha, Wanxiu, Teng, Gang, Song, Xiaotong, Mu, Baoying, Shang, Jilei, Song, Dongxiang, Lv
Format: Article
Language:English
Subjects:
Broadband
Circuit design
Electromagnetic compatibility
Electromagnetic fields
Emission analysis
Emission measurements
Emissions testing
Equivalent circuits
Magnetic cores
Performance indices
Probes
Sensitivity analysis
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Summary:Current probe is one of the most important measurement equipments in electromagnetic compatibility (EMC) for electromagnetic conducted emission testing. The measurement sensitivity of the current probe can directly affect the testing results. A novel broadband high sensitivity current probe is designed and analyzed by combining calculation method of equivalent circuit and high frequency electromagnetic field. The Fe based microcrystalline is used for the magnetic core of the novel current probe. The structure dimension is determined according to simulations and analyses. The novel current probe is compared with the commercial current probes by practical testing. The testing results show that the sensitivity indexes of the novel current probe surpass that of the commercial ones nearly 10 dB from 20 Hz to 10 kHz. Besides, the transfer impedance indexes of the novel current probe could attain the performance of commercial probes from 10 kHz to 500 MHz.
ISSN:1755-1307
1755-1315
1755-1315
DOI:10.1088/1755-1315/186/3/012006