Thread: ART vs. W8JI
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Old September 5th 09, 12:03 AM posted to rec.radio.amateur.antenna
Richard Fry Richard Fry is offline
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First recorded activity by RadioBanter: Jun 2006
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Default ART vs. W8JI

On Sep 4, 1:25*pm, Richard Fry wrote:
And for equal, matched power applied to their feedpoints, the total of
the energy "expended" (radiated) by both them is identical.

_______________

For clarity I should have included the fact that the total of the
energy "expended" (radiated) when equal and matched powers are applied
to any and all elemental radiators, of whatever form, essentially is
identical.

What is NOT identical across these various radiator forms is the field
intensity in specific directions in the radiation volume.

THAT depends on the design of the radiating structure(s), and the
installation+propagation environment.

This is the reason for the 1.6 dB advantage in the intrinsic, free-
space, peak gain of the full-wave dipole over the 1/2-wave dipole in
the NEC analysis I posted earlier today. Both of these configurations
radiate the same total energy (somewhere).

But along their axes of maximum radiation, the full-wave antenna
produces the greater field intensity of the two, for a given applied
(and matched) power source.

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