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Antentop is FREE e-magazine devoted to Antennas and Amateur Radio an
Special page devoted to
Asymmetrical Trap Dipole Antenna
Asymmetrical Trap Dipole Antenna: by: Roman Sergeev (RA9QCE)
Ham knows and widely used to the Symmetrical Trap Dipole Antennas. Classical example of such antenna is W3DZZ antenna. At my opinion such antennas has just one benefit- patterns of the antennas are almost the same at the different bands. However, the antennas have lots disadvantages. There are heavy weight, complexity in design, large enough windage, the narrow bandwidth at the lower bands, high SWR at some bands.
Asymmetrical Dipole Antennas (that are used by hams) are free from some
of lacks of the Symmetrical Trap Dipole Antennas. However the main lack
of the Asymmetrical Dipole Antennas is the main lobe of the diagram
directivity at lower bands is toward to main lobes at the other upper
bands.
An antenna that is almost free from the disadvantages was design by
me by combination of these two types of antennas- Symmetrical Dipole
Antennas and Asymmetrical Dipole Antennas. I called the new one prototype
"Asymmetrical Trap Dipole Antenna."
PDF file, 110 KB (ANTENTOP-01-2011, pp: 38- 39)
Contents for AntenTop 01- 2011
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Last Updated:
February 4, 2018 19:57
