Re: [iPad] Case charges phones using radio waves

 

I'm an electrical engineer and ham radio operator and I say this is junk science

Sent from my iPad
Jim Coon

On Jun 2, 2015, at 10:46 AM, Jim Saklad jimdoc@icloud.com [iPad] <iPad@yahoogroups.com> wrote:

 

>> Case charges phones using radio waves
>
> Looks like Pie I the sky to me

Beamed power has been shown to be possible for many decades.
So far, it has not been shown to be particularly *practical*.

On the one hand, I would be concerned with what this case is doing to the radio-frequency signals I WANT to see on and to broadcast from my device — cellular, Wifi, GPS. Does it absorb them as well, blocking the transmissions I want? Or causing the device to use much greater power to get a signal through?

And on the other hand, how MUCH power can it efficiently extract from ambient signals?

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Jim Saklad mailto:jimdoc@icloud.com

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