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

oups.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??