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Circularly polarized antenna question

J

John Marks

Jan 1, 1970
0
I want to do an experiment whereby six CPA's are arrayed to converge
in a cubic symmetry. The center would be where the ends of the
straight section that normally points upward all connect. IOW the
circular segments would all face each other inward.

Can anyone predict what the result might be? Would the field vectors
cancel, or simply distort into some new geometry.

I would expect buckloads of reflection. Is there anyway to mitigate
this. Perhaps a coupling transformer that inverts phase from the
signal source?

Thanks for any insight.

Robert Marks
 
W

Wayne Shanks

Jan 1, 1970
0
John said:
I want to do an experiment whereby six CPA's are arrayed to converge

Certafied Publick accountant?

in a cubic symmetry. The center would be where the ends of the
straight section that normally points upward all connect. IOW the
circular segments would all face each other inward.

Can anyone predict what the result might be? Would the field vectors
cancel, or simply distort into some new geometry.


I can't figure what you are trying to get at, but...

Electromagnetics is linear, so the field vectors probably cancel, not
distort.


I would expect buckloads of reflection.
Huh... no, If you have destructive interference at some point you must
have and equal amount of constructive interference. You are just
making an antenna array with a funky lobe pattern


Is there anyway to mitigate
this. Perhaps a coupling transformer that inverts phase from the
signal source?


Now you are just making this up

Thanks for any insight.

Robert Marks

Wayne Shanks
 
M

Mark Fergerson

Jan 1, 1970
0
John said:
I want to do an experiment whereby six CPA's are arrayed to converge
in a cubic symmetry. The center would be where the ends of the
straight section that normally points upward all connect. IOW the
circular segments would all face each other inward.

Can anyone predict what the result might be? Would the field vectors
cancel, or simply distort into some new geometry.

How large is this mess? Are you thinking about near or
far field?
I would expect buckloads of reflection. Is there anyway to mitigate
this. Perhaps a coupling transformer that inverts phase from the
signal source?

What could possibly be the point of such an exercise,
generating a rotating magnetic (or electric) field? If the
former, think nested perpendicular sets of Helmholtz coils.
The latter is much simpler.

Mark L. Fergerson
 
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