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The catenary effect
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October 14th 14, 07:35 PM posted to rec.radio.amateur.antenna
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First recorded activity by RadioBanter: Jun 2006
Posts: 1,898
The catenary effect
Lostgallifreyan wrote:
wrote in news
EZNEC will generate loops with whatever number of sides you want and
thus it is fairly easy to see when increasing the number of sides
gives diminishing returns in the difference between the loops.
I imagine the simplest way (the way I'd do it if I was coding EZNEC myself
(as if I could!)), I'd allow the user to set the segment count not by direct
number, but by limiting angle to dictate segment length before generating a
new segment automatically, that way ANY curve will be met with an appropriate
array of segemnts, and changing the angle changes count, process time,
accuracy...
There is an add on for EZNEC call AutoEZ that basically allows you to
define an antenna using an Excel spreadsheet.
Which means you can define an antenna in terms of equations and/or
variables.
See:
http://ac6la.com/autoez.html
--
Jim Pennino
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