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I made a fractal antenna for my brother's car.  I bent a length of wire into a koch curve because I heard it gets a better signal than regular straight antennas. He hasn't tested it yet, but I hope it works.  Has anyone else tried this?

If it does work I will post pictures.

Somewhere also was an article about fractal metal plates on microwave packages to control where how much heat has to go in order to perfectly heat the food...

I constructed my own fractal antenna design (though, I'm pretty much certain, I'm not the first one who thought about that shape^^), being basically a sierpinsky-like pattern but with hexagons, rather than triangles or quads.

Like this: 7 hexagons, take out the one in the middle, replace them all.

Basically it approaches a Koch Snowflake but with a lot of (in the limit infinite) smaller Koch Snowflakes

Like this:
http://www.tgmdev.be/curvesierpinskiobj.htm (scroll down a little)
But with Hexagons, attached to their sides, rather than to their corners.

I wonder, what that shape would do if used as antenna... Seeing a Koch Curve in one of your linked topics, I guess, it would do a rather nice job

I constructed it with Blender, which is obviously not too good for fractals or for high accuracy at smaller scales: It's a more or less all-in-one freestyle artist tool, rather than a CAD program or one, optimized to fractal structures... But I could share a .blend or an .obj, if anyone is interested
That then could be translated into data of a machine, that cuts out metal or something and that way you could try it out

Edit: reading, what they say on the side, it's a rather useless one... "However, above 6 iterations, the size of the generated inner objects becomes so small ( in fact, close to a single pixel) that further iterations are useless, only increasing the time of curve drawing." - the pixel size is resolution dependend! And in those tiny graphics, they have on that site, my guess would be, that a six iteration version would already be way beyond the pixel detail... - But you get the idea of the shape

Ok, found a Wiki for this:
http://en.wikipedia.org/wiki/Hexaflake

In my version, the middle part is missing, due to the slightly different construction. - Also, the internal Koch Snowflakes don't have triangluar tips right away but rather half-hexagons. - in the limit, that shouldn't make much difference, though...


EDIT2:
This must also give a great fractal antenna... but it looks harder to contstruate...

http://upload.wikimedia.org/wikipedia/commons/d/d9/Mandeltree.svg