Radiation Resistance
C = 160 * pi^2 ~ 1579.
This is exactly 4 times the radiation resistance of a short dipole with
linear current distribution (i.e., one without a top hat), since the
average current is twice the amount for the same radiated power.
Of course, this assumes an infinitely thin wire. Any real wire will have
a higher radiation resistance than this.
Roy Lewallen, W7EL
Reg Edwards wrote:
I am not trolling.
What I want to know is the radiation resistance, referred to the base,
of a short vertical wire above a perfect ground, the current in the
wire being assumed uniformly distributed.
The radiation resistance at the base is in the form of -
C * Square( Length / Lambda )
where Length is the physical length or height of the wire and Lambda
is the free-space wavelength.
What is the value of the constant C ?
Thank you.
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Reg.
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