EEVblog Electronics Community Forum
General => General Technical Chat => Topic started by: akos_nemeth on December 27, 2017, 04:03:35 pm
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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/ (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 (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
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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.
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Powercast had similar modules a few years ago, also in the 915MHz band. The efficiency was horrible, as expected.
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https://liesandstartuppr.blogspot.com/2017/12/energous-and-fcc-approval-for-mid-range.html
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.
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:-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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I hope this dies.
All the UHF hams are shaking their fists at this one as well. Right slap bang in the middle of the 33cm band :palm:
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I hope this dies.
All the UHF hams are shaking their fists at this one as well. Right slap bang in the middle of the 33cm band :palm:
Waiting on the Amateur Radio Relay League to say, Yo, wait a minute, here!
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Energous wants to perform an "experiment" in CES and asked the FCC for a license.
Here is the application
https://apps.fcc.gov/oetcf/els/reports/STA_Print.cfm?mode=current&application_seq=88256&RequestTimeout=1000 (https://apps.fcc.gov/oetcf/els/reports/STA_Print.cfm?mode=current&application_seq=88256&RequestTimeout=1000)
And here is the first objection.
https://apps.fcc.gov/oetcf/els/reports/ViewExhibitReport.cfm?id_file_num=1890-EX-ST-2018&application_seq=88256 (https://apps.fcc.gov/oetcf/els/reports/ViewExhibitReport.cfm?id_file_num=1890-EX-ST-2018&application_seq=88256)
I think if we all submit more objections, it would make CES safer and do some other good.
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hah, if they deployed them here all of the smart meters to measure everyone's power usage would stop working.
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hah, if they deployed them here all of the smart meters to measure everyone's power usage would stop working.
Its a good reason for objection, interupption for the operation of the power grid. Go ahead and file it.
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Energous wants to perform an "experiment" in CES and asked the FCC for a license.
Here is the application
https://apps.fcc.gov/oetcf/els/reports/STA_Print.cfm?mode=current&application_seq=88256&RequestTimeout=1000 (https://apps.fcc.gov/oetcf/els/reports/STA_Print.cfm?mode=current&application_seq=88256&RequestTimeout=1000)
And here is the first objection.
https://apps.fcc.gov/oetcf/els/reports/ViewExhibitReport.cfm?id_file_num=1890-EX-ST-2018&application_seq=88256 (https://apps.fcc.gov/oetcf/els/reports/ViewExhibitReport.cfm?id_file_num=1890-EX-ST-2018&application_seq=88256)
I think if we all submit more objections, it would make CES safer and do some other good.
Better, fitter, happier, more productive...
EDIT: yes ban them, if only just to make CES look better. Though I've seen trash at CES they've even shown on TV.
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I hope this dies.
Most likely will. ;D
But why not spice things up a little and use much higher frequencies? Looks like it could give you a nice warming sensation and a tingly feeling.
:-DD
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Does the objection link above point to a portal to the last century?
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Hi All,
It would be interesting if some expert could analyze the usability of this device based on the available information. ;D
Regards,
Ákos
Three word summary:
wank wank wank.
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Hahahaha spot on :-DD
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Does the objection link above point to a portal to the last century?
I think it does
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EEEK! 90s user interface! :wtf: :scared:
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update-
approval to
WattUp 900 MHz wireless charging technology has FCC approval
https://www.businesswire.com/news/home/20210913005135/en/Energous-To-Demonstrate-WattUp-Wireless-Charging-Over-The-Air-Technology-and-Partner-Products-at-CES-2022
(https://www.businesswire.com/news/home/20210913005135/en/Energous-To-Demonstrate-WattUp-Wireless-Charging-Over-The-Air-Technology-and-Partner-Products-at-CES-2022)
The US Federal Communications Commission has given its approval to wireless charging technology from a San Jose, California company.
https://apnews.com/press-release/business-wire/technology-business-europe-federal-communications-commission-energous-corp-18383181a521437bb69e07f92e7a60cd (https://apnews.com/press-release/business-wire/technology-business-europe-federal-communications-commission-energous-corp-18383181a521437bb69e07f92e7a60cd)
Energous Corporation sought approval for its 900 MHz, 1-watt active energy harvesting transmitter that enables wireless transfer of power.
The US regulatory agency's OK follows similar approval granted in Europe this past May.
The transmitter, known as WattUp, is able to charge several devices at the same time and is seen as key to the growth of devices reliant on the Internet of Things.
has wireless charging technology been debunked?
do we need a 900 MHz 1-watt transmitter in our homes?
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Energous Corporation sought approval for its 900 MHz, 1-watt active energy harvesting transmitter that enables wireless transfer of power.
A whole 1 WATT!
What a game changer! :-DD
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Hello, similar techniques are being scaled up for electric car charging.
Nikola Tesla in 1890s experimented with wireless power and achieved 1/2 W lamps lit 1 km from a 50 KW transmitter on a 55' tower.
In 1960s Satellite Solar Power Station (SSPS) would launch huge panels into sync orbit and beam down microwave pawer to acres of antennas and converters "RectEnnas"
https://en.wikipedia.org/wiki/Space-based_solar_power
Side benefit: Can be dual use as a space based weapon. Similar schemes are proposed more recently.
As a magnetics designer I can say any gap between primary and secondary of a split inductive coupling will have very low efficiency due to fringing of the field. DC><Microwave Converter conversion efficiency at 900 MHz will be 70-85%.
Just the ramblings of an old retired EE
Bon chance
Jon