An Inductive Probe for the Measurement of Common Mode Currents on Differential Traces
Measuring common mode currents on differential microstrip transmission lines is a complicated task, because the common mode current, being the parasitic mode, is usually much weaker than the intended differential current. Hence, the measurement technique has to provide sufficient rejection of the differential mode. The probe described in this paper uses a shielded loop probe combined with a metallic screen to enhance the differential mode rejection of the current probe. The proposed techniques were tested on a test board at frequencies up to 6 GHz.
V. Khilkevich et al., "An Inductive Probe for the Measurement of Common Mode Currents on Differential Traces," Proceedings of the 2012 IEEE International Symposium on Electromagnetic Compatibility (2012, Pittsburgh, PA), pp. 720-724, Institute of Electrical and Electronics Engineers (IEEE), Aug 2012.
The definitive version is available at http://dx.doi.org/10.1109/ISEMC.2012.6351645
2012 IEEE International Symposium on Electromagnetic Compatibility (2012: Aug. 6-10, Pittsburgh, PA)
Electrical and Computer Engineering
Keywords and Phrases
Probes; Transmission line measurements; Current measurement; Power transmission lines; Metals; Magnetic field measurement; Microstrip
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Article - Conference proceedings
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