Return-Path: Received: (qmail 14467 invoked from network); 25 Mar 2002 09:09:18 -0000 Content-Transfer-Encoding: 8bit Received: from unknown (HELO murphys-inbound.services.quay.plus.net) (212.159.14.225) by excalibur.plus.net with SMTP; 25 Mar 2002 09:09:18 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: (qmail 21009 invoked from network); 25 Mar 2002 09:09:18 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by murphys.services.quay.plus.net with SMTP; 25 Mar 2002 09:09:18 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.33 #2) id 16pRxB-0003Ei-00 for rsgb_lf_group-outgoing@blacksheep.org; Mon, 25 Mar 2002 10:43:53 +0000 Received: from astral.infomsk.ru ([212.164.44.2] helo=astral.omskcity.com) by post.thorcom.com with esmtp (Exim 3.33 #2) id 16pRx9-0003ET-00 for rsgb_lf_group@blacksheep.org; Mon, 25 Mar 2002 10:43:52 +0000 Received: from fitec.omskcity.com (mu06.dialup2.infomsk.ru [212.164.44.118]) by astral.omskcity.com (8.9.3/8.9.3) with SMTP id PAA3c9ee83f27b3 for ; Mon, 25 Mar 2002 15:05:03 +0600 (OS) Date: Mon, 25 Mar 2002 16:44:09 +0000 (GMT) From: "Alexander S. Yurkov" To: rsgb_lf_group@blacksheep.org Subject: Re: LF: Proximity effect In-reply-to: <3C9ED998.6E6F7E40@virgin.net> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: Hi, Stewart ang Group. On Mon, 25 Mar 2002, Stewart Bryant wrote: > A very brief look at Balanis "Antenna Theory" has the passing comment > that > proximity effect can lead to greater loss than skin effect (on a > discussion on > small loops). He references G. Smith, The proximity effect in systems of > > parallel conductors", J Applied Physics, Vol 43, no 5, May 1972 pp > 2196-2203. The proximity effect increase losses indeed. The effect may be substationaly greater than skin effect only. I have investigate by myself this effect in solenoid few years ago both theoretically and experimentally. Unfortunely I do not study this in loop. But it seems that effect is large in loop as in solenoid. 73 de RA9MB/Alex http://www.qsl.net/ra9mb