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A dipole
is an
antenna.
It is a
fundamental
form of
antenna
consisting
of a
single
wire
whose
length
is
approximately
equal to
half the
transmitting
wavelength.
The
length
of a
half
wave in
space is
approximately:
length (metres)
= 150 /
Freq (Mhz)
or
length
(feet) =
492 /
Freq (Mhz)
The
actual
physical
length
in
practice
is
slightly
different
from
this
owing to
other
factors.
A most
popular
dipole
known to
almost
everyone
is the
folded
dipole
which
forms
part of
most
V.H.F.
T.V.
Antennas.
A type
of
antenna
with two
defined
opposing
radiating
elements,
both of
the
proper
length
for the
frequency
of
operation,
and each
forming
the
counterpoise
for the
other. |
