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FCC approves first wireless 'power-at-a-distance' charging system
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akos_nemeth:
Hi All,

This news appeared on Engadet: "San Jose-based startup, Energous, announced on Tuesday that it has received the first such FCC certification for power-at-a-distance wireless charging with its WattUp Mid Field transmitter."

https://www.engadget.com/2017/12/26/fcc-approves-first-wireless-power-at-a-distance-charging-syste/

FCC has really approved it: https://fccid.io/2ADNG-MS300

The energy transfer seems to be happening at 913 MHz.

It would be interesting if some expert could analyze the usability of this device based on the available information.  ;D

Regards,
Ákos
ataradov:
This does not solve any actual problems, so it is best to just wait until they fold, or deliver something we can look at without violating a confidentiality request letter.

I can't find the actual amount of transferred power.  All test reports have very small numbers. Not anything useful for actual charging of high-power devices, like phones.

Ok, it looks like 2.4 GHz is used for communications and sub-GHz for power transfer with maximum transmitter power of 40.2 dBm (conducted). And FCC is only concerned with the radiated power, so who knows how efficient that this is.
Gribo:
Powercast had similar modules a few years ago, also in the 915MHz band. The efficiency was horrible, as expected.
edavid:
https://liesandstartuppr.blogspot.com/2017/12/energous-and-fcc-approval-for-mid-range.html


--- Quote ---They've put out a useless device hobbled to meet FCC guidelines for part 18, and it seems most people are dumb enough to fall for this.
--- End quote ---
EEVblog:
 :-DD

https://liesandstartuppr.blogspot.com.au/2018/04/has-myant-dropped-energous-wireless.html?spref=tw

WattUp is just deck chair shuffling on the Titanic
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