> If a folded dipole performs like a normal dipole, why
doesn't a horizontal
> loop perform like a rhombic ?
Because a Rhombic is diamond-shaped uni- or bi-directional
antenna normally more than 2 WL on a leg and has the angles
adjusted so the lobes from all four sides align at a low
A loop generally has no particular adjustment of angles or
A Rhombic also has very poor efficiency along with many
spurious lobes, and so is not really a very high gain
antenna for the physical area. The big Rhombic at ARRL HQ
for example was reported to have about the same signal as a
three element monoband yagi. They do however produce useable
patterns over very wide bandwidths.
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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