NEC-LIST: RE: NEC-LIST:Simulations of Q and the Chiu-Harrington Limit

Sorry, if I'm starting to get off topic here. This one will be brief.

Chip,

I'd be pleased to briefly answer your questions.

The Koch fractal monopole was chosen as a subject since it was discussed
in the IEE Electronics Letters and the IEEE Transactions.

The purpose of the paper was to compare the radiation properties of the
Koch fractal monopole to several meander line and normal mode helix
monopoles as a function of geometry and total wire length. The question
being considered was the significance of fractal geometry in determining
the resonant properties of a monopole of fixed height. Ie. The
performance of the Koch fractal was compared to meander line and normal
mode helix antennas of the same height and total wire length.
Additionally, their resonant performance was compared when the antennas
were made to be resonant at the same frequency.

Steve Best

> -----Original Message-----
> From: nec-list-admin_at_gweep.ca
> [mailto:nec-list-admin_at_gweep.ca] On Behalf Of Fractenna_at_aol.com
> Sent: Thursday, November 28, 2002 9:06 AM
> To: dbaker_at_postino.up.ac.za; nec-list_at_gweep.ca
> Subject: Re: NEC-LIST:Simulations of Q and the Chiu-Harrington Limit
>
>
> In a message dated 11/28/02 1:04:24 AM Eastern Standard Time,
> dbaker_at_postino.up.ac.za writes:
>
>
> > Have a look at "The Koch fractal monopole antenna: The
> significance of
> > fractal geometry in determining antenna performanc," SR Best, pp.
> > 194-213, 2001 Antenna Applicarions Symposium, U of Illinois.
> >
> > Duncan Baker.
> >
>
> I am always happy to learn more about my inventions Duncan.
> Can you summarize
> what it says? I remember looking at this antenna in 1990 and
> do not remember
> it as being particularly useful for a low Q antenna at very
> small height. It
> is a reasonable example of a multiple current max in a small
> height when
> somewhat electrically small and thus is useful as a miniature
> colinear at
> about 1/8 wave. It has good bandwidth at that height.
>
> Why did the author choose this? There are many fractal
> antennas to choose
> from-why this?
>
> Did I miss something perhaps?
>
> What problem was the author addressing?
>
> Could you forward a copy?
>
> 73,
> Chip N1IR
> --
> The NEC-List mailing list <nec-list_at_gweep.ca>
> http://www.gweep.ca/mailman/listinfo.cgi/nec-> list
>

-- 
The NEC-List mailing list <nec-list_at_gweep.ca>
http://www.gweep.ca/mailman/listinfo.cgi/nec-list