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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. |
