Re: Current in 1/2WL Dipoles

Gene Fuller wrote:
So soon we forget. In a standing wave antenna the phase is gone, kaput. I believe you have even quoted me on occasion when it was convenient for the purpose you had at the moment.

And it is again convenient to quote you:

The only "phase" remaining is the cos (kz) term, which is really an amplitude description, not a phase.

You also have said that all the phase information is still there,
that superposition doesn't destroy any information. I believe you.
The standing wave current is a cosine function. The arc-cosine of
the amplitude yields the phase of the component waves.

Since the traveling wave phase exists only in your imagination, just pick a number that supports whatever you are trying to "prove" now.

The point is that this is the very current that Roy used to
"measure" the phase shift through a loading coil. I agree with
you that standing wave current cannot be used to measure the
phase shift through a loading coil. Now if you will tell that
technical fact to Roy, he can withdraw his previous assertions.

It seems that you are contradicting yourself by saying that all
the information in the component waves is still there after
superposition yet you say the phase is gone. Both statements
cannot be true.
--
73, Cecil http://www.w5dxp.com
.

Relevant Pages

  • Re: Dual-Z0 Stubs
    ... or opinion on Cecil's EZNEC files, other than his rather odd take ... standing wave current phase shift - whatever that is. ... either through the wire or through a loading coil. ...
    (rec.radio.amateur.antenna)
  • Re: colinear representation in NEC
    ... keep claiming that someone has measured standing wave current phase shifts. ... with 21 segments. ... Roy reported that the phase shift across a loading coil wasn't ...
    (rec.radio.amateur.antenna)
  • Re: Loading Coils; was : Vincent antenna
    ... the delay through a 75m mobile loading coil. ... of the nature of standing wave current has resulted in some ... cannot be used to make a valid measurement of the phase shift (delay) ...
    (rec.radio.amateur.antenna)
  • Re: Analyzing Stub Matching with Reflection Coefficients
    ... Are you still standing by your use of standing wave ... there is no phase shift through a loading coil? ... no phase shift in a 90 degree stub. ...
    (rec.radio.amateur.antenna)
  • Re: Current across the antenna loading coil - from scratch
    ... If there's no phase shift along the wire, ... measure phase shift through a coil. ... I told you that your phase shift measurement was invalid a year ago ... contained in standing wave current phase. ...
    (rec.radio.amateur.antenna)