RadioBanter - View Single Post - 50 Ohms "Real Resistive" impedance a Misnomer?

July 23rd 03, 03:38 AM

(Dr. Slick) wrote in message . com...
(Art Unwin KB9MZ) wrote in message om...

Slick

Dr Slick,
Way back in this thread you alluded to antennas as being
transformers. The more I think about that statement the more I see
it as being fact. Anything that involved coupling which all
antennas do can be drawn as a transformer !
Since the thread migrated all over the place did you feel that
the group agreed with that position?
Regards
Art

Some have emailed me personally, and we have pretty much agreed on
these two points(even Roy agreed with these, if you read his posts
here):

1. Two antennas (also called transducers) placed close together
actually can be considered a transformer, albeit a very inefficient
one.

Humm...By antenna I assume it also means a radiator. This would
suggest
that a stagger tuned radiators would fall into the catagory discussed
above.
Now I have a problem with that statement, because I very much see it
as a transformer which is VERY efficient and not as you stated "albiet
a very inefficient one".
Can you explain to me how a stagger tuned antenna migrate into
inefficient radiators?
Seems to me that Thevenin's theorem would show this as being
incorrect !

-----
snip

Slick

Regards
Art