Current and voltage distribution on an antenna.
W. Watson wrote:
Roy Lewallen wrote:
W. Watson wrote:
There's a figure at the bottom of
http://www.tpub.com/neets/book10/42.htm that shows current
.... snip
I've seen that diagram on occasion and it has somewhat baffled me, but
at least now I have some insight into what's going on. The most recent
occurrence was Carr's fourth edition of "Practical Antennas Handbook".
These diagrams all appeared out of nowhere as though they were quite
obvious to the reader. I got the book through Amazon and have about 10
days on a 30 day period to return it, which I think I will.
Unfortunately, Carr died a few years ago, so there will be no new
changes to it.
It is tempting to look at his software CD for the book to see what
antenna design tools are on it. I think I'll resist the temptation
though. It would be interesting to know what some sort of total package
looked like. I'm curious if there's some general design tool, or it's
just a bunch of programs for different antennas. It would be interesting
to know if one can start from some general set of requirements and the
program would lead the designed to the appropriate design.
How about that? I read further into the book and found a whole chapter on
the software on the CD. Another quick romp through the book tells me that
(I'm inferring this.) that what most of it is about is describing antennas
and where they might be used. It looks like a potential catalog of such
designs to try out on the software. I don't think that's necessarily the
reason why the book was written, but it makes it appealing. I don't see
anywhere that all the designs offered could be investigated with the
software on the CD.
Roy, perhaps you have an answer for the last statement. I see that one of
your programs is included.
Wayne T. Watson (Watson Adventures, Prop., Nevada City, CA)
(121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time)
Obz Site: 39° 15' 7" N, 121° 2' 32" W, 2700 feet
--
"I often quote myself - it adds spice to
my conversation." - George Bernard Shaw
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