What Is a Half Wave Dipole Antenna?


Quick Answer

A half-wave dipole antenna consists of two wire rods or tubing, each one-quarter wavelength long. It is called "half-wave" because its length is equal to a half wavelength of the frequency of operation.

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Full Answer

Half-wave dipole antennas are easy to install and less likely to cause electromagnetic compatibility or interference problems than other types of antennas. A dipole antenna's current is strongest at the center and weakest at the ends. In contrast, its voltage is weakest at the center and strongest at the ends. Although half-wave dipole antennas are simple, they often outperform commercial multiband antennas. Many complex antennas are built using a half-wave dipole antenna as a basis.

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