Richard Harrison wrote:
For the foregoing reasons, it is wrong to say a single radio frequency
has anything to do with "two different EM radiations coming out from a
dipole".

Richard, I think maybe he was referring to the MOM method of dividing a
wire up into 'n' segments and assuming each segment is a small individual
radiator. The radiation from each small radiator is vectorially summed
with the radiation from all the other small radiators. Close to the
radiators, the E and H fields can sum to being out of phase.

If you change his "two different EM radiations" to "N different EM
radiations", then what he is saying might be more understandable.
--
73, Cecil http://www.qsl.net/w5dxp



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Cecil, W5DXP wrote:
"I think maybe he was referring to the MOM method of dividing a wire up
into "n" segments and assuming each segment is a small individual
radiator."

It`s possible. The method of moments (MOM) is one way I`m accustomed to
solving civil and mechanical problems. I learned from the newsgroup that
antenna modelers had appropriated the term when I explained the
mechanical process on-line.

Best regards, Richard Harrison, KB5WZI

Richard Harrison wrote:

Cecil, W5DXP wrote:
"I think maybe he was referring to the MOM method of dividing a wire up
into "n" segments and assuming each segment is a small individual
radiator."

It`s possible. The method of moments (MOM) is one way I`m accustomed to
solving civil and mechanical problems. I learned from the newsgroup that
antenna modelers had appropriated the term when I explained the
mechanical process on-line.

Or, based on further thought, he may be talking about the forward-traveling
wave plus the reflected traveling wave on a standing wave antenna. Please
see my other posting. The fields generated by those two traveling-waves
are superposed upon each other in the vicinity of a standing-wave wire
antenna and can certainly put them out of time phase with each other.
--
73, Cecil http://www.qsl.net/w5dxp



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