Everything about Directional Antenna totally explained
A
directional antenna or
beam antenna is an
antenna which radiates greater power in one or more directions allowing for increased performance on transmit and receive and reduced interference from unwanted sources.
Directional antennas like
yagi antennas provide increased performance over
dipole antennas when a greater concentration of radiation in a certain direction is desired.
All practical antennas are at least somewhat directional, although usually only the direction in the plane parallel to the earth is considered, and practical antennas can easily be
omnidirectional in one plane.
The most common types are the
yagi antenna, the
log-periodic antenna, and the
corner reflector, which are frequently combined and commercially sold as residential TV antennas.
Cellular repeaters often make use of external directional antennas to give a far greater signal than can be obtained on a standard
cell phone.
For long and medium wavelength frequencies,
tower arrays are used in most cases as directional antennas.
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