Coaxial antenna

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A coaxial antenna (often known as a coaxial dipole) is a particular form of a half-wave dipole antenna, most often employed as a vertically polarized omnidirectional antenna.

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[edit] History

Arnold B. Bailey was granted US patent 2,184,729 [1] for "Antenna System" on December 26, 1939.

[edit] Configuration

In the most basic form, a quarter-wavelength section of coaxial cable is prepared such that the inner and outer conductors are separate but still attached to the remaining cable.

The outer (sheath) conductor is connected to a quarter-wavelength conducting sleeve into which the cable is inserted, and the inner conductor protrudes vertically above the sleeve for a quarter-wavelength. Also, two additional quarter-wavelength sections may be connected to outer conductor to form some kind of "ground plane" antenna.

[edit] Bazooka Dipole coaxial antenna

Dipole antennas constructed using coaxial cables with shorted ends are often given the name "Bazooka" dipoles.

[edit] See also

[edit] External links

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