Dave Platt wrote:
In the back of "TV and Other Receiving Antennas" by Arnold Bailey is
an interesting section which describes a large number of commonly-used
TV antenna configurations - dipoles made of wire and rod, folded
dipoles with various wire diameters and spacings, bot-tie, simple
Yagi, and so forth.
Yes, an antenna has a surge impedance just like a transmission
line has a surge impedance which is the characteristic impedance.
A standing wave antenna and a transmission line with standing
waves both exhibit virtual feedpoint impedances that differ
from the characteristic impedances.
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73, Cecil
http://www.w5dxp.com