The Moxon is a good example of the effect of bent elements - gain and
front to back levels are more typical of a three element yagi but
front to side is not as good.
One has a two element yagi in which the designer has essentially traded
front to side and mechanical complexity for gain and feed impedance.
73,
... Joe, W4TV
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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