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The uBeam FAQ

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EEVblog:
The uBeam CES demo kit.
So this is 30 engineers for 18 months working on miniaturisation?
Looks more like a bunch of off-the-shelf transducers on a PCB
I presume the white square frames are their state-of-the-art location tracking system.

How is this in any way marketable technology for a small sensor IoT application which is their new target market?

Notice the LARGE SMPS which would be the TX, and the smaller energy harvesting board which would be the RX.
You could guestimate the efficiency based on those sizes. Hint, it's not large.



EEVblog:
Guess the efficiency!

StillTrying:
Are you sure that's really it, it can't be that bad surely, if it is even I'm shocked.  :o
Did they think if they made the transmitter smaller the beam would be smaller.  :-//
Efficiency ~0.3% ?  :horse:

PaulReynolds:
Well that's interesting. I just did a post on this:

https://liesandstartuppr.blogspot.com/2019/01/ubeams-ces-2019.html

In summary - looks like Murata COTS parts are used in the demo, nothing visible there in that box that is proprietary, and still the "brick" cases for charging. As Dave points out, if you've got a 100W supply for mW out, that does not bode well for efficiency. The transducers in the bottom right don't look like Muratas, but they also don't look like the thin, small, powerful, and cheap ones they claimed to have back in the 2017 pitch.

EEVblog:

--- Quote from: StillTrying on January 14, 2019, 12:16:26 am ---Are you sure that's really it, it can't be that bad surely, if it is even I'm shocked.  :o

--- End quote ---

This is supposed to be the demo kit they are offering developers, so yep, that would be the best they have got.
Yes, the efficiency is that bad, it's not hard to calculate, and it's been backed up by numbers uBeam have published too.

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