[Antennaware] Cubical Quad antenna model for VOACAP
btippett at alum.mit.edu
Sun May 14 16:26:37 EDT 2006
>I have recently modeled a two element 30/40M quad on a 20' boom
(0.205 and 0.142 lambda respectively) and got free space gains of
7.4-7.5 dBi. My design criteria were maximum gain and a reasonable
match to 100 ohms. How much gain are you observing for two and three
Scroll down to "Quad vs. Yagi - Free Space Gain"
about midway down this page:
red = 2 el Quad
green = 2 el Yagi
blue = 3 el Yagi
A 3 el Yagi actually has slightly higher average
gain than a 2 el Quad over wide bandwidths. Shades
of the "Quad vs Yagi" arguments of the 70's!
My last post on a topic which just won't die!
73, Bill W4ZV
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