Art, with your knowledge of antenna theory I'm surprised you'd ask this
question. You should know that whenever energy is taken from one direction it is
directed in another--none is lost due to cancellation. If you integrate all the
energy radiated in all directions from a given antenna system (neglecting losses
due to attenuation) it will be the same whatever the arrangement of the
radiating system when fed with the same power.

Walt, W2DU


"Art Unwin" wrote in message
...
Presumably the nulls between lobes on a radiation pattern
are a result of radiation cancellation. IF this is true then it means
we have not harnessed
all the radiation available. What are your thoughts about that Dave?
Can you relate the number of nulls in a radiation pattern with the
number
of elements in a planar array? You are the expert aren't you?
Art