To: | jsb@digistar.com, towertalk@contesting.com |
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Subject: | Re: [TowerTalk] CobWebb antennas - success stories? |
From: | Jim Lux <jimlux@earthlink.net> |
Date: | Wed, 22 Sep 2004 15:12:36 -0700 |
List-post: | <mailto:towertalk@contesting.com> |
At 05:58 PM 9/22/2004 -0400, jsb@digistar.com wrote:Anyone have any success stories regarding the CobWebb antenna? An interesting take on a compact loop antenna, or, perhaps, more properly, a shortened, endloaded dipole. It's a clever design, and would be simple to model in NEC, but isn't going to be easy to analyze in other ways. Since it's physically larger than a classic 1m compact loop, the radiation resistance will be higher, so the current will be lower, probably reducing loss (compared to a compact loop). One couldn't analyze it as a loop, because the classical compact loop analysis assumes that the current is the same everywhere in the loop, which is only true for a very small loop. It will probably be more omnidirectional than a dipole, so the gain, compared to a dipole, would be lower. As far as ground interaction and so forth goes, I doubt it's much different than a dipole at the same height. _______________________________________________ _______________________________________________ See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions and ask for Sherman, W2FLA. _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com http://lists.contesting.com/mailman/listinfo/towertalk |
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