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November 14th 04, 08:27 PM
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"Frank" wrote in message news:... Funny, posted this earlier, but did not seem to take. "Frank" wrote in message news:... "Richard Clark" wrote in message ... On Fri, 12 Nov 2004 19:07:34 +0000 (UTC), (curiousjohn4) wrote: In fact, there was significant induced voltage from a very long wire. Hi OM, You are treading water here. There is more than radiation at work very close to an antenna. Consider your own language above: Induction (or even capacitive coupling). 73's Richard Clark, KB7QHC I think Richard has hit the nail on the head. I wish calculation of electromagnetic fields could be reduced to a simple equation. Any undergraduate text on electromagnetics barely scratches the surface. I suggest you check the site at www.nec2.org and download the .pdf version of the "NEC Program Description -- Theory". Gives an overview of "Method of Moments". As a foundation Kraus' Electromagnetics may help, and is available used (and cheap) at www.bn.com. Also at the same site a reprint of "Field Computation by Moment Methods" by Roger F. Harrington can be obtained for $33.50. Then there is the "Finite Element" method as used by "Ansoft's" HFSS". Regards, Frank |
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