The Moxon may not be a "special" case, but it is indeed different. The
Moxon is actually a form of phased array ... the tips of the elements
are bent toward each other to provide capacitive coupling between them.
Think of why you never see a three element Moxon.
Apples and pears ...
73,
Dave AB7E
On 3/20/2013 5:46 AM, Pete Smith N4ZR wrote:
But given current distribution on a dipole, isn't it generally
understood that drooping ends have relatively little effect? I guess
the Moxon is a special case, where the ends are brought close to each
other.
73, Pete N4ZR
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On 3/20/2013 7:27 AM, David Robbins wrote:
yes, in a classic yagi with straight and parallel elements that is
true... but when you bend or make the driven element not a simple
half wave dipole then it can have an effect on the pattern by itself.
Mar 20, 2013 01:18:45 AM, jim@audiosystemsgroup.com wrote:
On 3/19/2013 11:10 AM, Joe Subich, W4TV wrote:
They give the designer additional degrees of freedom with which to
control input impedance and side lobe structure.
I was with you until you said "side lobe structure." I don't claim to
know much a bout the design of Yagis, but I'm under the impression that
pattern is largely determined by the tuning and spacing of parasitic
elements. Am I wrong?
73, Jim K9YC
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