Neven; In the near field one must know whether the offending emmiter is mostly generated from a magnetic loop or electric field antenna structure. Once that is known, the eventual transmitted portion can be computed. If your shielding is non Fe, Ni or Co and the source is of a magnetic loop nature then there will be minimal attenuation. If the source resembles an electric field antenna (less likely at lower frequencies) then the usual shielding formulae may apply since they are primarily based on E-fields to some extent and you will have attenuation.
===== Best Regards Hans Mellberg Regulatory Compliance & EMC Design Services Consultant By the Pacific Coast next to Silicon Valley, Santa Cruz, CA, USA 408-507-9694 __________________________________________________ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail - only $35 a year! http://personal.mail.yahoo.com/ ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Michael Garretson: [email protected] Dave Heald [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.rcic.com/ click on "Virtual Conference Hall,"
