# Is it possible to redesign a portable electronic device such that it can be charged by a domestic microwave oven?

Soon after iPhone 6 was introduced there was a prank claiming that the smartphone can be charged by leaving it in a running domestic microwave.

TL;DR don't do it, it is very, very unsafe. There's a number of videos showing how a lot of things goes wrong, don't do it anywhere.

So a portable device such as smartphone as it's shipped cannot be charged by a domestic microwave.

Could it be redesigned so that such charging becomes possible? I've read a number of publications about distant future concepts where you have a number of large solar panels on Earth orbit and they capture energy and then beam it to Earth surface as microwave radiation where the beam hits some cleverly designed receiver and the latter converts microwaves to electricity. Perhaps something like this can be done for charging devices.

Suppose the following limitations apply:

• it must support typical domestic microwave ovens, no adjustments of oven must be required
• the portable device may contain any new or altered elements unless those significantly impair its usability or make it unsafe

Is it doable?

• Comments are not for extended discussion; this conversation has been moved to chat. – Dave Tweed Jan 24 '17 at 15:51
• ping? Is there something wrong with my answer or have you just forgotten to accept it? – Marcus Müller Mar 8 '17 at 19:59

Sure. Place a $\frac\lambda2$ dipole in your microwave oven and see how the kV's spark over the feed point. You could of course harvest that power. It's an EM field – what did you expect?