[time-nuts] Quadrifilar Helix Antenna
azelio.boriani at screen.it
Sat Jun 9 14:53:34 UTC 2012
Of course one of the most challenging part of the EM simulators is
preparing the correct model of the structure you want to simulate.
Unfortunately (for me) I'm mostly a try-it guy rather than simulate-it so I
prefer to build and try with test equipment. My first QFH was too high in
frequency (GLONASS-ready?) so I have to build another one.
On Sat, Jun 9, 2012 at 4:11 PM, David Kirkby <david.kirkby at onetel.net>wrote:
> On 8 June 2012 09:31, Raj <vu2zap at gmail.com> wrote:
> > I came across this article. I dont understand Italian!
> > From RadioKit Elettronica 2003-03
> > https://dl.dropbox.com/u/10377704/IV3QBN%20QuadHelix.pdf
> > Cheers
> > --
> > Raj, VU2ZAP
> > Bangalore, India.
> I'd be interesting in trying to see some simulations of this in a full
> wave 3D electromagnetic simulator like HFSS from Ansys, FEKO, EMpro
> from Agilent etc. I currently have a trial license for Agilent's
> EMpro, but don't feel confident in trying this antenna. I would have
> been a bit happier using HFSS, but don't have a license for it.
> Maybe one of the much cheaper NEC based programs coud do this, though
> I'm not so sure I'd trust the results, whereas I would from HFSS.
> HFSS (which costs a small fortune), comes with a free antenna design
> kit. That is able to design a Quadrifilar Helix Antenna, but needs a
> ground plane, so has a very different radiation pattern to this.
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