Logically, if it can make emissions worse, it can make them better, too. Suppose your original board exhibited some resonance, and thieving changed it. That would certainly lower emissions due to a resonant board. Anything that resonates will radiate, and this can even be a whole board in its slot. So the answer is yes, it CAN help. But I'd not count on random thieving to cut overall emissions! On the other had, I like the idea of ground-fill, well tied to an underlying plane. This should provide an on-board return path for fields than otherwise would return through more distant conductors.
Cortland ====================== Original Message Follows ==================== >> Date: 17-Jan-01 12:18:24 MsgID: 1077-21792 ToID: 72146,373 From: "David Gelfand" >INTERNET:gelf...@memotec.com Subj: Re: Copper balance Chrg: $0.00 Imp: Norm Sens: Std Receipt: No Parts: 1 From: "David Gelfand" <gelf...@memotec.com> Subject: Re: Copper balance List-Post: emc-pstc@listserv.ieee.org Date: Wed, 17 Jan 2001 15:18:44 -0500 Can thieving reduce emissions even if they are floating? I have two different versions of a board, the one without thieving is much noisier than the other. Thanks, David. David Gelfand Regulatory Approvals Memotec Communications Inc. Montreal Canada ====================== End of Original Message ===================== ------------------------------------------- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson: pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org