Author Topic: FCC approves first wireless 'power-at-a-distance' charging system  (Read 3346 times)

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Offline akos_nemethTopic starter

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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/

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
 

Offline ataradov

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Re: FCC approves first wireless 'power-at-a-distance' charging system
« Reply #1 on: December 27, 2017, 06:00:35 pm »
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.
« Last Edit: December 27, 2017, 06:08:43 pm by ataradov »
Alex
 

Offline Gribo

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Re: FCC approves first wireless 'power-at-a-distance' charging system
« Reply #2 on: December 27, 2017, 08:46:53 pm »
Powercast had similar modules a few years ago, also in the 915MHz band. The efficiency was horrible, as expected.
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Offline edavid

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Re: FCC approves first wireless 'power-at-a-distance' charging system
« Reply #3 on: December 27, 2017, 09:22:02 pm »
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.
 

Offline EEVblog

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Offline bd139

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Re: FCC approves first wireless 'power-at-a-distance' charging system
« Reply #5 on: April 05, 2018, 08:57:09 am »
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:
 

Offline GreyWoolfe

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Re: FCC approves first wireless 'power-at-a-distance' charging system
« Reply #6 on: April 05, 2018, 11:58:10 am »
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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Offline sdpkom

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Re: FCC approves first wireless 'power-at-a-distance' charging system
« Reply #7 on: December 04, 2018, 05:41:05 am »
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

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
I think if we all submit more objections, it would make CES safer and do some other good.
 

Online TheSteve

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Re: FCC approves first wireless 'power-at-a-distance' charging system
« Reply #8 on: December 04, 2018, 05:48:44 am »
hah, if they deployed them here all of the smart meters to measure everyone's power usage would stop working.
VE7FM
 

Offline sdpkom

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Re: FCC approves first wireless 'power-at-a-distance' charging system
« Reply #9 on: December 04, 2018, 06:21:21 am »
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.
« Last Edit: December 04, 2018, 12:05:01 pm by sdpkom »
 

Offline Cyberdragon

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Re: FCC approves first wireless 'power-at-a-distance' charging system
« Reply #10 on: December 04, 2018, 03:31:56 pm »
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

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
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.
« Last Edit: December 04, 2018, 03:34:14 pm by Cyberdragon »
*BZZZZZZAAAAAP*
Voltamort strikes again!
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Offline SiliconWizard

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Re: FCC approves first wireless 'power-at-a-distance' charging system
« Reply #11 on: December 04, 2018, 06:10:23 pm »
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
 

Offline saike

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Re: FCC approves first wireless 'power-at-a-distance' charging system
« Reply #12 on: December 04, 2018, 06:30:46 pm »
Does the objection link above point to a portal to the last century?


 

Offline Wan Huang Luo

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Re: FCC approves first wireless 'power-at-a-distance' charging system
« Reply #13 on: December 04, 2018, 06:42:49 pm »
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.
 

Offline bd139

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Re: FCC approves first wireless 'power-at-a-distance' charging system
« Reply #14 on: December 04, 2018, 06:45:14 pm »
Hahahaha spot on :-DD
 
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Offline sdpkom

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Re: FCC approves first wireless 'power-at-a-distance' charging system
« Reply #15 on: December 05, 2018, 05:08:22 am »
Does the objection link above point to a portal to the last century?

I think it does
 

Offline Cyberdragon

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Re: FCC approves first wireless 'power-at-a-distance' charging system
« Reply #16 on: December 05, 2018, 05:40:44 am »
EEEK! 90s user interface! :wtf: :scared:
*BZZZZZZAAAAAP*
Voltamort strikes again!
Explodingus - someone who frequently causes accidental explosions
 

Offline jonovid

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Re: FCC approves first wireless 'power-at-a-distance' charging system
« Reply #17 on: November 02, 2021, 05:46:54 am »
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

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

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?
Hobbyist with a basic knowledge of electronics
 

Offline EEVblog

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Re: FCC approves first wireless 'power-at-a-distance' charging system
« Reply #18 on: November 02, 2021, 06:06:33 am »
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
 

Offline jonpaul

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Re: FCC approves first wireless 'power-at-a-distance' charging system
« Reply #19 on: November 02, 2021, 06:46:12 am »
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



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