[BC] Skirt feeds.....

[Cowboy]

On Sunday 21 February 2010 11:55 am, Dave Dybas wrote:

>  D) The actual base impedance is the value of one of the skirt wires divided by the # of skirt wires.

 Common in VLF is the curtain antenna.

 Several wires, which *may* be a skirt, all grounded except the one that is fed.
 The feed point Z ( not the radiation R ) is multiplied by the number of
 wires, as the total current is divided by the wires in parallel, but the
 voltage is the same on all of them, so the *feed point* R is transformed
 *UP* to a usable value when it would otherwise ( monopole ) be a very
 low value.

 This has no affect on the radiation of the structure itself, only the
 feed point Z. ( unless the wires are an actual curtain spread over
 some degree of real estate. )

-- 
Cowboy