[Antennas] Loop inside a loop TX antenna ??? - Revised (monoband configuration)

Terry Conboy n6ry at arrl.net
Tue May 18 13:39:32 EDT 2004


At 03:49 AM 2004-05-18, Demetre Koumanakos wrote:
>I received a couple of replies in regards to loop inside loop antenna,
>and was suggested to me that what I'm looking for is the typical
>multiband loop. The loop inside a loop is usually used for multiband
>tuning, but what I had in mind was a monoband loop inside a loop, a
>configuration that whould maybe  "add" some performance to the single
>loop monoband antenna.
>
>Any ideas ?

It sounds like you might be thinking about a two-turn loop.  In general, 
they don't perform any better than a single turn version - they just 
exhibit a different impedance.

There are also parallel loop designs (mostly horizontal loops) that produce 
the equivalent of a "fat" conductor, which can widen the bandwidth.  Art 
Bell uses one that is 1000 feet in circumference: 
http://www.coasttocoastam.com/gen/page159.html .

73, Terry N6RY


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