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Antennas

X-antenna

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X-Dipole: Far-field simulations; 40m band.
(Calculations performed using EZNEC+ v5.0)

Simple dipole feed: N and S wires driven. E and W wires unconnected. Model: x45dipole.ez (simulation frequency set to 7.1MHz). Slice along NE-SW line.

Splayed dipole feed: N and E wires joined S and W wires joined. Model: x45splay.ez (simulation frequency set to 7.1MHz). Slice along NW-SE line.

Double-T feed: N and S wires joined. E and W wires joined. Model: x45_2T.ez (simulation frequency set to 7.1MHz). Enhanced low-angle radiation. Slice along NE-SW line.

Yagi Feed: Inductively loaded reflector. Model: x45_yagi_32uH.ez (at 7.1MHz). L = 32mH. Slice through the SW - NE direction.

Skewed Yagi Feed: Additional capacitor improves back rejection: Model: x45_skyagi_32uH_15pF .

2+1 Asymmetric feed: Model: x45_2plus1.ez . Maximises radiation in one quadrant.

1+2+L Asymmetric feed: Model: x45_Uasym_G-L.ez . Phasing inductor maximises radiation in one quadrant and increases rejection in opposite quadrant.

2+1+L Asymmetric feed: Model: x45_Nasym_-GL.ez . Phasing inductor maximises radiation in one quadrant and increases rejection in opposite quadrant.

© 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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