Electronic – Where on a cellphone does the electromagnetic radiation(radio frequencies) come from? the antennae or the transmitter

cellphoneradiation

I'm an electrosensitive (someone who is sensitive to electromagnetic fields such as radio frequencies). I'm trying to figure out a way in which I can use a cellphone without it's radiation affecting me. What I want to know is if the radiation comes from the antennae because I'm planning on purchasing an external antennae that I will connect to a Samsung Galaxy S3 that has a FME connector.During my research they stated that once an external antennae is connected the internal one will be disabled so I would just place the antennae at a far distance and use an amplifier to boost the signal to the cellphone. Can this idea work?

Best Answer

The majority comes from the antenna. However, no system is 100% perfect, and there will always be some leakage from other portions of the circuit.

Also, the rest of the phone will be generating high frequency (RF) EMI fields. The CPU in the phone typically runs at 1GHz or so, and the various peripherals all use clocked (serial or parallel) high frequency (MHz) signals, all of which radiate RF EM fields. Yes, the phone has to be designed to limit the amount radiated to pass its certifications, but that doesn't cut out 100% of all EMI.

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