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[Antennaware] Topband vertical matching.

Subject: [Antennaware] Topband vertical matching.
From: David Gould <>
Date: Tue, 17 Aug 2010 13:14:28 +0100
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For the last few years I have just been matching my topband vertical 
or inverted L antennas by using a 1:4 UNUN

I have just seen the following article by Jay at Array Solutions..

where he resonates the antenna at 1.9MHz which gives a capacitive 
reactance at 1.83 (which becomes a phantom part of the L-network) the 
other part being a real inductance to earth.  I like the look of this 
arrangement because of its simplicity and the fact that there is a DC 
connection to ground.

I would like to try and model this directly in EZNEC, but not quite 
sure how to define the load components and the source in this case.

1) Can I just specify a load of L+R (where R is the simulated earth 
loss)  and the source in the lowest segment?

2) Should I put the L+R in the lowest segment and the source in the 
next segment up?

3) Or is there a better way?

I would appreciate any advice from anyone with a bit more experience 
than I have.

Dave, G3UEG

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