Tdonaly wrote:
And what is a current
drop? I've heard of voltage drops and cough drops but never
current drops.

It's is the decrease in current due to the attenuation
(alpha) factor in equation 1.22 (2) in Ramo, Whinnery, & Van Duzer.
It's all covered in any distributed networks course. According to
Balanis, antennas have an attenuation factor due to radiation and
is similar to (slightly more complicated than) this familiar
transmission line equation for lossy lines.

I = Im(e^-az)d^j(wt-bz)

where a is alpha, w is omega (2*pi*f), and b is beta (phase factor).

I won't believe your theory, Yuri, until you and Cecil take the
time to present it in terms of field theory. Since you guys have taken
EM classes in college you should have no trouble doing this, right?

Please reference Chapter 1 of _Fields_and_Waves_... by Ramo,
Whinnery, and Van Duzer. Start with equations 1.18 (4)&(5)
and 1.22 (1) & (2). Also _Antenna_Theory_ by Balanis, equations
4-81 and 10-1 and one other that I cannot locate right now. :-)
The one I cannot locate is the simplified one for a 1/2WL dipole.
--
73, Cecil http://www.qsl.net/w5dxp



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