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The folded unipole antenna is a type of monopole mast radiator antenna used as a transmitting antenna mainly in the medium wave band for AM radio broadcasting stations. It consists of a vertical metal rod or mast mounted over and connected at its base to a grounding system consisting of buried wires. The mast is surrounded by a "skirt" of ...
A mast radiator (or radiating tower) is a radio mast or tower in which the metal structure itself is energized and functions as an antenna. This design, first used widely in the 1930s, is commonly used for transmitting antennas operating at low frequencies, in the LF and MF bands, in particular those used for AM radio broadcasting stations.
This design is used for the mast radiator transmitting antennas employed for radio broadcasting in the MF and LF bands. At lower frequencies the antenna mast is electrically short giving it a very small radiation resistance , so to increase efficiency and radiated power capacitively toploaded monopoles such as the T-antenna and umbrella antenna ...
In a radio antenna, a parasitic element or passive radiator is a conductive element, typically a metal rod, which is not electrically connected to anything else. [1] Multielement antennas such as the Yagi–Uda antenna typically consist of a " driven element " which is connected to the radio receiver or transmitter through a feed line , and ...
Radiator The vertical wire that carries current from the feedpoint at the base to the top; unbalanced current in the vertical segment generates the emitted radio waves. Ground system Either wires buried in the ground under the antenna or sometimes wires suspended a few feet above ground (a counterpoise) acts like the other plate of the capacitor.
[2] [3] [4] The parasitic elements are not electrically connected to the transmission line and serve as passive radiators, reradiating the radio waves to modify the radiation pattern. [2] Typical spacings between elements vary from about 1 ⁄ 10 to 1 ⁄ 4 of a wavelength, depending on the specific design.
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