In , "Dave VanHorn"
wrote:


"Frank Gilliland" wrote in message
.. .
In , "Dave VanHorn"

wrote:


And BTW, a 'doublet' only means the antenna has two elements. That's
all.

any two elements, anywhere in space?

Pretty much.

i think not.

Then why don't you explain why you think not?

maybe by purist definition, but putting the second element at a significant
distance makes it more an independent antenna, than part of a system with
the first one.

Not necessarily. Sometimes a doublet is used for direction-finding by using the
phase relationship between the two elements while they are a significant
distance apart. In that case, "wider is better". And just for the sake of
discussion, a pair of TV 'rabbit ears' is considered a doublet. Even though it
uses balanced transmission line, it is not a dipole because it doesn't function
as a dipole.

also, placing them very close together and in parallel would make them
essentially one element.

Not even that -- they would no longer be elements of an antenna, but two
conductors of a transmission line.






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