>... like how to make one if I
>can't find them pre-made and already using the same connector as the
>gumstix boards use for antennas.
You really do not want to make an antenna as the FCC would get mad.
Their are lots of wifi antenni available that have FCC certification.
-------------- Original message ----------------------
From: John Rudd <john@...>
> As I mentioned in the last day or two, I'm more of a software person
> than a hardware person, so I may come across as a little slow on some
> things here ... this particular subject being one of them. The pictures
> of the wifi boards I've seen all show a thick linear antenna.
> I seem to recall that there are also flat square antennas out there
> (specifically, I once ripped apart a wavelan (previous name of "orinoco"
> 802.11b brand products) PCMCIA card and found a flat square antenna
> inside), but don't know much about them ... like how to make one if I
> can't find them pre-made and already using the same connector as the
> gumstix boards use for antennas.
> Does anyone know of such a thing that would work with the gumstix
> boards? I'm specifically thinking of something that is hopefully going
> to be less than 30mm x 30mm or so.
> (to build on my last post, I'm thinking of something that would take up
> less than half of the area of the bottom of an altoids tin, so I could
> have one for wifi and one for a 3g/gsm/gprs board ... not sure what I
> would need to do wrt bluetooth though; but the idea would be to drill
> some small holes either on the bottom of the altoids tin, or on the back
> (under the hinge), and then secure the antennas to the bottom surface...
> then put some sort of protective layer over it all (and then maybe cover
> that protective layer with a decal that looks like the original tin
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From: John Rudd <john@ru...> - 2007-02-27 21:18:56
> Hi John,
>> ... like how to make one if I
>> can't find them pre-made and already using the same connector as the
>> gumstix boards use for antennas.
> You really do not want to make an antenna as the FCC would get mad.
> Their are lots of wifi antenni available that have FCC certification.
Well, yes, if _I_ made the antenna, I'm sure it would end up resonating
th wrong things, having un-intended side-bands, cause all kinds of
interreference, or some such, and upset the FCC.
However, when I was in school at Ga Tech, I knew several people that
were making their own antennas for different projects (the main one
being the radio station we ran out of our dorm; at one point they were
specifically talking about making their own flat/square antenna for
reaching a particular restaurant near campus).
My point was more that I know it is possible to have it done on a custom
basis, as opposed to only being able to use something off-the-shelf.
And my other point was: finding out if anyone knows of off-the-shelf
antennas that fit what I'm looking for.