Z Docs
Antennas
X-antenna
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X-Dipole: Far-field simulations; 30m band.
(Calculations performed using
EZNEC
+ v5.0)
Simple dipole feed
:
N and S wires driven.
E and W wires unconnected.
Model:
x45dipole2.ez
(simulation frequency set to 10.1MHz).
Max. Gain is at ±37° from North and ±37° from South. Pattern can be rotated through 90° by connecting transmitter to E and W wires.
Shown below is a slice through the direction indicated in red.
Splayed dipole feed
:
N and W wires connected.
S and E wires conneceted.
Model:
x45splay2.ez
(simulation frequency set to 10.1MHz).
Enhanced low-angle radiation in broadside directions.
Yagi Feed
:
Model:
x45_yagi_500nH.ez
.
Inductively loaded reflector increases low-angle radiation in forward direction and provides some degree of back rejection.
Slice through the direction marked in red:
L = 0.5
m
H
Skewed Yagi Feed
:
Model:
x45_skyagi_500nH.ez
.
© D W Knight 2008.
David Knight asserts the right to be recognised as the author of this work.
Z Docs
Antennas
X-antenna
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