"John Smith" wrote in message
...
Well, I am not as bad as those guy with their "photon projecting
antennas"--my antennas propagate a wave though a medium-
Very good, An antena array is a collection of antennas all of which
transmit interferring waves that are both additive and interfering negatives
in the far field In other words just a collection of dipole radiators. which
is then
termed as an "array" which may or may not qualify as a "beam".
For a Yagi style antenna position is all important which is not necessarily
true
for all antenna arrays, especially those of non liear form.
.. In fact Uda and another guy wrote up the original design and
Yagi stepped in later to provide a translation into English .
For me I cannot see a relationship between positions of radiators other
than
with the Yagi and where the terms used suffered in the translation yet still
gave a
a mental picture that loosely matched a mirror or a reflector as an
explanation.
of how gain can occur. It would appear from the answers received
that a true definition has not yet been agreed upon that is all encompassing
in true electrical terms.
Cheers and beers
Art



better word--I use ether to describe that medium... but, if anyone knows
a
better name--I am open... grin

Warmest regards,
John
--
Sit down the six-pack!!! STEP AWAY!!! ...and go do something...

" wrote in
message
news:KSwge.72444$NU4.47928@attbi_s22...
| Yes, I see that Cecil, but I suspect he is not a ham
| and thus would not know the difference between
| different arrays. But if he is really looking for "Aliens"
| he may well be looking in the right direction but his LED's
| have a skewed correct "reflector".
| With respect to your two element example you stated that
| they were both driven. When coupled correctly it is only
| necessary to feed one element in an array and allow the
| coupled element to be of similar phase and if possible
| of a higher current flow to give you that 3 db additive
| advantage . Plus single digit elevation angle for max gain
| even tho the array is fed at 1 WL height.( 20 metres)
| I could send you actual model details if it is of interest.
| Or a photo if that interests you more.
| Regards
|
| Art
|
|
|
|
| "Cecil Moore" wrote in message
| ...
| wrote:
| I wonder who was the first to assign these terms
| Or was it a poor translation from Japanese ( Uda and Yagi) ?
|
| Please note that John didn't mention Yagi's. He only
| mentioned "beams". :-)
| --
| 73, Cecil http://www.qsl.net/w5dxp
|
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