On 16 Mar, 14:10, "Dave" wrote:
"art" wrote in message

ups.com...





On 15 Mar, 15:29, "Dave" wrote:
"art" wrote in message

groups.com...

On 15 Mar, 14:47, "Dave" wrote:
"art" wrote in message

groups.com...

It is oftimes said that parasitic elements of a yagi absorb
radiatiation
and then reradiate half of what it received. Is this meaning that it
only absorbs half of the radiation applied in its direction and
where
it
then reradiates 100% of its radiation? It apears to be a simple
question
depending how one looks at it in terms of efficiency which could
mean
anything.
Now in my unreleased Gaussian antenna array there is no interaction
with respect to radiation as radiation cannot occur outside until
the
enclosed border is breached.
On the face of it one then can assume that a yagi is not really
efficient depending how one uses terms that have a special
definition
because of absorbed radiation.
Thoughts! Auguments!. Trashing, or what ever trips your trigger.
Just when you thought that Gaussian arrays would go away a thing
like
this comes along,
go figure. ( Don't forget Pointings vector and what it implies.grin)
Art

what prevents me from drawing an imaginary Gaussian boundary around my
yagi?- Hide quoted text -

- Show quoted text -

A yagi cannot be in equilibrium because of parasitic elements.
A simple dipole can be in equilibrium and can be placed inside
an arbitary border.
Art

ok, take each parasitic element on the yagi, break it in the middle to
turn
it into a 'dipole', add a voltage source set at 0v to drive it. now draw
your imaginary boundary. i have satisfied your requirements, now why is
my
multi-dipole array not a gaussian array by your definition??- Hide quoted
text -

- Show quoted text -

David,
You are obviously an immigrant to the U.K., Nigeria perhaps!
I see you have made over 116,000 posts just on usenet and that is just
counting one server, all in the search of a fight and goodness knows
how many aliases you have used every day.
How about providing one of your many amateur calls?

has it been that many posts? i'll bet you just searched for the alias i use
on here, which is a common anti-spam alias used by many posters. i use only
the one alias, though i did just recently switch isp's so the posting server
has changed, oh and i do occasionally post via news.microsoft.com for some
of their software development groups. if you really wanted to find out
who i was you would have found it already... its right there if you really
want it. every header (at least from this isp) has the real identity in it.- Hide quoted text -

- Show quoted text -

I was putting you about 100 to 140 miles North by Northwest of London.
I suppose that would be towards the Derby area .