Hi All, The following three articles and the referenced paper from my website show that, contrary to popular belief, shielded magnetic field probes do not work in the near field. The E-field shielding in magnetic field probes only work in the far field or for fields that are symmetrical about the center line of the probe. Take a look at the articles:
* June 2008, The Square Shielded Loop - Part 2, Parasitic Coupling<https://emcesd.com/tt2008/tt060208.htm> (Electric Field Shielding of Magnetic Loops is Not Always Effective!) * July 2008, The Square Shielded Loop - Part 3, Parasitic Coupling Between Unshielded Wire Loops<https://emcesd.com/tt2008/tt070508.htm> * August 2008, The Square Shielded Loop - Part 4, Coupling to a PCB<https://emcesd.com/tt2008/tt080108.htm> (From Shielded and Unshielded Magnetic Loops) * Signal and Noise Measurement Techniques Using Magnetic Field Probes<https://emcesd.com/pdf/emc99-w.pdf> (~600K) * (1999 IEEE EMC Symposium paper) Doug [https://lh4.googleusercontent.com/_HuR3Ky2TF_XhFHyxnYRmiq7nHQldnMsPNYFaLG6kb5T4y8MeCe-BDC_BscJtSFgszSSjssihHS-pjM3-jwNP8S0CwE-gN8fsRsPkojiAlmpBwb20vIVizS-siCUywW_jqrefbVr] - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to EMC-PSTC@LISTSERV.IEEE.ORG All emc-pstc postings are archived and searchable on the web at: https://www.mail-archive.com/emc-pstc@listserv.ieee.org/ Website: https://ewh.ieee.org/soc/pses/ Instructions: https://ewh.ieee.org/soc/pses/list.html (including how to unsubscribe) List rules: https://ewh.ieee.org/soc/pses/listrules.html For help, send mail to the list administrators: Mike Sherman at: msherma...@comcast.net Rick Linford at: linf...@ieee.org For policy questions, send mail to: Jim Bacher: <j.bac...@ieee.org> _________________________________________________ To unsubscribe from the EMC-PSTC list, click the following link: https://listserv.ieee.org/cgi-bin/wa?SUBED1=EMC-PSTC&A=1
