View Single Post
  #20   Report Post  
Old June 7th 07, 08:38 PM posted to rec.radio.amateur.antenna
Jimmie D Jimmie D is offline
external usenet poster
 
First recorded activity by RadioBanter: Feb 2007
Posts: 287
Default Real time proof of Poyntings vector


"Mike Kaliski" wrote in message
...
Thank you for your courteous response. I thought I had to be missing
something. It was of course the fact that the cluster of elements and

the
array were all in equilibrium and resonant in their entirety. That's
the

bit
that is obviously causing people problems and upsetting them

Yes, that is about it, you could also match that same definition
to Poyntings vector but even that comes under fire. There was also
a mathematical anylysis made by an individual contributor
connecting Gauss but that got hammered also. But lets face it they
are amateurs by definition.

snip


Art

I now know what you are trying to achieve and why. I was initially
thinking
purely in terms of amateur band HF frequencies rather than the higher end
of
the spectrum, where this antenna makes sense. Obviously as frequencies
increase, the properties of electromagnetic waves change in the way they
interact with materials. I still doubt whether any new physical theories
are
needed to explain what is happening and doubtless careful analysis in the
future will reveal how it all works. As you suggest, spread spectrum,
multi
channel communications are becoming more and more essential in order to
efficiently utilise the limited spectrum available and antenna designs
like
yours will help to minimise unnecessary interference to other users while
preserving a high quality link.

Harold

Arts' postings have prompted me to investigate some areas for myself with
which I was unfamiliar. While I don't subscribe to needing to find some
new
physical theory to explain how these antennae work, there are some
interesting ideas being developed in the GHz frequency ranges. My previous
professional experience revolved around radar (sorry about the pun). I
haven't really been paying too much attention to the way in which wi-fi
and
other high frequency signalling systems worked, even though they were in
similar frequency bands.

I have learned something new and see some humour in posts on this subject.

Hence entertaining and enlightening - not sadism or masochism.

Cheers

Mike G0ULI





I have learned quite a bit from those who have rreplied to Art.

Jimmie