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Author Topic: OlinuxIno-micro reboot due to proximity of GSM antenna.  (Read 2158 times)

flavigny

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OlinuxIno-micro reboot due to proximity of GSM antenna.
« on: October 01, 2012, 10:49:22 AM »
Hello,
I am working with a Gsm modem (Wavecom)
I let pieces on my destktop (the wild!)
It appears that if the antenna is near the board, OlinuxIno reboot as soon as I send a message.
at 30 cm away, I have no more problem.
I hope it is possible to build a shield around the OlinusIno-micro oard so that I have a have compact design.
Regards.
PO.

LubOlimex

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Re: OlinuxIno-micro reboot due to proximity of GSM antenna.
« Reply #1 on: October 01, 2012, 11:35:20 AM »
Hello flavigny,

This problem in most of the times cannot be completely avoided. Depending on the GSM modem brand and the board this influence may vary from 5 to 50 cm.

This interference is caused by the fact that most GSM devices emit a lot of power (especially initially right before sending a message or starting a call) which is especially bad for the inductors.

Of course there are numerous solutions from replacing board elements with RF resistive ones to wrapping the board in tin-foil.

Regards,
Lub
Technical support and documentation manager at Olimex