antenna attachment on wifi adapter

I have posted a picture on
alt.binaries.schematics.electronic
of a wifi adapter. I'd like to add a 50 ohm
external antenna to the adapter.
I'd like opinions of the proper placement.
Thanks,
Mike

Note: If you don't have access to
alt.binaries.schematics.electronic
Please go on to other posts.

On Fri, 3 Aug 2007 09:14:06 -0500, "amdx" <amdx@knology.net> wrote:

>I have posted a picture on
>alt.binaries.schematics.electronic
>of a wifi adapter. I'd like to add a 50 ohm
>external antenna to the adapter.
>I'd like opinions of the proper placement.
> Thanks,

You got the right idea.
Remove that smt device you point to in the pic.
That disconnects the internal antenna.

I would use the newely vacated pad (the pad connected to the thru hole)
for the center conductor of the coax.

Scrape back the green solder mask adjacent to it (between the pad & the
round exposed copper just above it in the photo) for the coax shield.

You want _very_ short & direct coax-to-pcb connection.
See <http://www.andrewhakman.dhs.org/gallery/wap54g/broadcom_g_top> for
a pic of two oem coax-pcb terminations. Its a very early WAP54G.

Where you show the coax connected would work, but shorter is better.

Don't forget a strain relief on the coax :)

Good luck

kc

amdx wrote:
> I have posted a picture on
> alt.binaries.schematics.electronic
> of a wifi adapter. I'd like to add a 50 ohm
> external antenna to the adapter.
> I'd like opinions of the proper placement.
> Thanks,
> Mike
>
> Note: If you don't have access to
> alt.binaries.schematics.electronic
> Please go on to other posts.
>
>

Can you email me the pic (assemblywizard@gmail.com)?

Regards,
JS

"John Smith I" <assemblywizard@gmail.com> wrote in message
news:f93bhc$mf2$1@nnrp.linuxfan.it...
> amdx wrote:
>> I have posted a picture on
>> alt.binaries.schematics.electronic
>> of a wifi adapter. I'd like to add a 50 ohm
>> external antenna to the adapter.
>> I'd like opinions of the proper placement.
>> Thanks,
>> Mike
>>
>> Note: If you don't have access to
>> alt.binaries.schematics.electronic
>> Please go on to other posts. \
>
> Can you email me the pic (assemblywizard@gmail.com)?
>
> Regards,
> JS

Hi JS,
Try this page
http://www.usenet-replayer.com/group...lectronic.html
You should have access to it.
Mike