[Antennaware] Antenna wire in EZNEC

K9AY k9ay at k9ay.com
Wed May 7 10:32:56 EDT 2008

Hi Andy,

I tried changing wire size on my models of the K9AY Loop and Flag, but did 
not get the kind of difference you report. With the Flag, I see 2 dB 
difference between #14 (1.6 mm) and 1" (25.4 mm) conductor sizes. The K9AY 
Loop shows 1 dB difference.

Can you provide more info on the antenna structure and model parameters?

73, Gary

> Hello Guys,
> I have a model for loop antenna.  I have noticed that if I increase the 
> wire diam. from 0.5mm to say 12mm for a 20m circumfrence wire loop antenna 
> the 1.1MHz gain goes up from -28dBi to -13dBi. Increasing the diam. again 
> to 100mm the gain is now -5dBi.
> Is the increase in gain due to lower wire resistance or a reduction in the 
> loop inductance or both?
> Can I use say 300 Ohm ribbon ( wires in parallel ) to get the same results 
> as 12mm diam wire. Also can I use two wires spaced 100mm to simulate a 
> 100mm diam wire?
> 73
> Andrew G8LUG

More information about the Antennaware mailing list