The monopole antenna was invented in 1895 by radio pioneer Guglielmo Marconi; for this reason it is sometimes called the " Marconi antenna ".
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A monopole antenna can be thought of as a dipole antenna where one end of the dipole antenna now becomes the ground plane for said monopole antenna.
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A monopole antenna can be thought of as a dipole antenna where one end of the dipole antenna now becomes the ground plane for said monopole antenna.
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For a monopole antenna, the Earth acts as a ground plane to reflect radio waves directed downwards, making them seem to come from an image antenna.
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One usually constructs the folded-unipole from an existing monopole antenna by shorting out the base insulator, thus connecting the tower directly to the ground system.
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Series-fed monopole antenna sites require care, keeping weeds as short as possible, since weeds will dissipate radio frequency power, severely reducing antenna efficiency.
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The monopole antenna reduced the frequency of the waves compared to the dipole antennas used by Hertz, and radiated vertically polarized radio waves which could travel longer distances.
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The T-antenna functions as a monopole antenna with capacitive top-loading; other antennas in this category include the umbrella, delta, and triatic antennas.
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When the SRR is made part of this configuration, characteristics such as the antenna's radiation pattern are entirely changed in comparison to a conventional monopole antenna.
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The radio payload consisted of a quarter-wave monopole antenna supported by an I / Q modulator, and an RF power amplifier providing 1.5W power.
