[Elecraft] Car interior antennas...

[Matt Zilmer]

Fractal antennas are used for multi-band point of sale and similar 
terminals, plus quite a number cell phones.  They are die-cut and cost 
about $0.05 to make in quantity.

I had a job interview in 2009 with a POS terminal manufacturer in 
Phoenix and the fractal antenna was one of the "tricks" the interviewers 
threw at me.  Lame, but not everyone got it either.  Otoh, I couldn't 
take the offer.

Fractal antennas' sizes are roughly proportional to a quarter wave of 
the lowestfrequency used. They're not very efficient, but in Wifi and 
cellular applications they usually don't need to be.

73,

matt W6NIA


On 7/16/2017 4:16 PM, Emory Schley wrote:
> I'm certainly no expert here but a fellow I know once told me that fractal antennas were showing up in car interiors because they're efficient, quite small and don't use much material to construct. Something about punching them out with a die... didn't quite understand what he was saying completely, but fractals might be something to look into. Again, I'm unsure about this, but I think cellphones commonly use fractal antenna technology, too.
>   
> Emory Schley
> N4LP
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-- 
"A delay is better than a disaster."
-- unknown

Matt Zilmer, W6NIA
[Shiraz]