Delta loop antenna designer
Design a delta-loop antenna for a single amateur HF band, which requires one single central support only, and which propagates at low elevation angles, predominantly in vertical polarization. These attributes make the delta-loop antenna an attractive proposition for single-band DX work. Read more...
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Set antenna color: | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Press the "Show antenna" button to display your antenna
configuration here in interactive 3D graphics mode
Antenna feed-point: ⬥
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Antenna performance
Here you can generate plots of radiation patterns, VSWR chart, antenna currents diagram and Smith chart for your antenna over a
choice of ground types. By changing the physical dimensions of the antenna, and refreshing these plots, you can learn a lot about
how such antennas will perform in the field.
Please note that
radiation patterns are here modelled over flat ground -
generally speaking, when an antenna is erected on a hill-top or mountain summit, surrounding sloping ground will often cause angles in
the elevation radiation pattern to be lowered in the direction of the
slope.
This effect is much less evident with the delta-loop antenna, since the predominantly vertically-polarized waves radiated by the
antenna are emitted mostly horizontally, such that reflections from the ground will be minimal, with the resulting elevation radiation
pattern being only slightly affected by downward-sloping ground.
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Choose ground type of
land in the vicinity of the antenna: |
Conductivity:
S/m
Dielectric const.:
F/m
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| View radiation patterns: |
Set elevation angle for azimuth plot:
°
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| View VSWR chart: | |
| Impedance curves scales: | |
| View currents diagram: | |
| View Smith chart: | |
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Antenna gains at 0° elevation: |
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| Antenna impedance: | |
| Frequency range: | |