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Cellular telephone emissions locking-up electronic circuitry ?

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Externet

Externet

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Hi.
Do the emissions of cell phones latch-up some integrated circuits, alter their operation ?

When are emissions stronger; during ringing, placing a call, talking, reporting to tower ?

Example : Remote controls ceasing to work properly if share a night table/shelf with a cell phone. Can the pre-programmed codes be altered when exposed to that RF ?
Remote controls for home appliances are not shielded at all.
 

Yes, it's possible..
The Average Power of Cellular Phones is 2W ( 33dBm) and this level may create a pretty high Electrical field that latches the electronic devices if they are not very well screened..
 

I've heard the vibrate-motor EMI on close-in radios.

But I would not expect latchup (as in triggering the
parasitic SCRs of the chip) from radiated emissions.
That takes >10mA of pin - substrate current by most
datasheets (and you can bet that's sandbagged).

Triggering some functional "lockup" by false signal or
signal corruption probably takes much less power
received. And products designed for ultra low standby
power and having no wall-connected EM threats in
mind, might be exceptionally sensitive. The capacitive
touchpad foils would be an excellent antenna.
 

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