Szczepan Białek wrote:
"joe" wrote ...
This is completely wrong. In a _linear_ systems adding two signals
cannot create new frequencies, including doubling. In the frequency
domain this is clear. If you look in the time domain and look at zero
crossings you may be confused. Do the math for the addition of two
sine waves of different phase.
In reality no sine waves.
The you had better learn what Fourier analysis is all about.
In the ends of a dipole the voltage is doubled
(VSWR) and the strong picks are radiated.
Stop relying on internet images you don't understand and may not have
any relevance to the discussion.
Discussion is on the harmonics. The dipoles can produce the frequency
doubling.
If that were true radio communications would be much more of a mess than
it currently is. You don't understand antennas and need to start learning.
You can do the math in the time domain, or frequency domain. Either
should tell you there is no doubling of frequencies.
In the school math the water waves are transversal. Look as they are
like: http://en.wikipedia.org/wiki/Stokes_drift
In order to generate new frequencies you need to have a non-linear
effect. Addition is NOT a non-linear operation.
The two picks from the ends of the dipole are not linear.
How would you go about proving that?
S*
S*