FCC approves first wireless 'power-at-a-distance' charging system - Page 1
Forum section: electronics / general

author: akos_nemeth
author_rank: Contributor
timestamp: December 27, 2017, 04:03:35 pm
content: 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-MS300The 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.Regards,Ákos

author: ataradov
author_rank: Super Contributor
timestamp: December 27, 2017, 06:00:35 pm
content: 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.

author: Gribo
author_rank: Frequent Contributor
timestamp: December 27, 2017, 08:46:53 pm
content: Powercast had similar modules a few years ago, also in the 915MHz band. The efficiency was horrible, as expected.

author: edavid
author_rank: Super Contributor
timestamp: December 27, 2017, 09:22:02 pm
content: https://liesandstartuppr.blogspot.com/2017/12/energous-and-fcc-approval-for-mid-range.htmlQuote

author: EEVblog
author_rank: Unknown
timestamp: April 05, 2018, 06:27:37 am
content: https://liesandstartuppr.blogspot.com.au/2018/04/has-myant-dropped-energous-wireless.html?spref=twWattUp is just deck chair shuffling on the Titanic

author: bd139
author_rank: Super Contributor
timestamp: April 05, 2018, 08:57:09 am
content: 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

author: GreyWoolfe
author_rank: Unknown
timestamp: April 05, 2018, 11:58:10 am
content: Quote from: bd139 on April 05, 2018, 08:57:09 amWaiting on the Amateur Radio Relay League to say, Yo, wait a minute, here!

author: sdpkom
author_rank: Regular Contributor
timestamp: December 04, 2018, 05:41:05 am
content: Energous wants to perform an "experiment" in CES and asked the FCC for a license.Here is the applicationhttps://apps.fcc.gov/oetcf/els/reports/STA_Print.cfm?mode=current&application_seq=88256&RequestTimeout=1000And here is the first objection.https://apps.fcc.gov/oetcf/els/reports/ViewExhibitReport.cfm?id_file_num=1890-EX-ST-2018&application_seq=88256I think if we all submit more objections, it would make CES safer and do some other good.

author: TheSteve
author_rank: Unknown
timestamp: December 04, 2018, 05:48:44 am
content: hah, if they deployed them here all of the smart meters to measure everyone's power usage would stop working.

author: sdpkom
author_rank: Regular Contributor
timestamp: December 04, 2018, 06:21:21 am
content: Quote from: TheSteve on December 04, 2018, 05:48:44 amIts a good reason for objection, interupption for the operation of the power grid. Go ahead and file it.

author: Cyberdragon
author_rank: Super Contributor
timestamp: December 04, 2018, 03:31:56 pm
content: Quote from: sdpkom on December 04, 2018, 05:41:05 amBetter, 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.

author: SiliconWizard
author_rank: Super Contributor
timestamp: December 04, 2018, 06:10:23 pm
content: Quote from: bd139 on April 05, 2018, 08:57:09 amMost likely will.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.

author: saike
author_rank: Regular Contributor
timestamp: December 04, 2018, 06:30:46 pm
content: Does the objection link above point to a portal to the last century?

author: Wan Huang Luo
author_rank: Regular Contributor
timestamp: December 04, 2018, 06:42:49 pm
content: Quote from: akos_nemeth on December 27, 2017, 04:03:35 pmThree word summary:wank wank wank.

author: bd139
author_rank: Super Contributor
timestamp: December 04, 2018, 06:45:14 pm
content: Hahahaha spot on

author: sdpkom
author_rank: Regular Contributor
timestamp: December 05, 2018, 05:08:22 am
content: Quote from: saike on December 04, 2018, 06:30:46 pmI think it does

author: Cyberdragon
author_rank: Super Contributor
timestamp: December 05, 2018, 05:40:44 am
content: EEEK! 90s user interface!

author: jonovid
author_rank: Super Contributor
timestamp: November 02, 2021, 05:46:54 am
content: update-approval toWattUp 900 MHz wireless charging technology has FCC approvalhttps://www.businesswire.com/news/home/20210913005135/en/Energous-To-Demonstrate-WattUp-Wireless-Charging-Over-The-Air-Technology-and-Partner-Products-at-CES-2022The 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-18383181a521437bb69e07f92e7a60cdEnergous 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?

author: EEVblog
author_rank: Unknown
timestamp: November 02, 2021, 06:06:33 am
content: Quote from: jonovid on November 02, 2021, 05:46:54 amA whole 1 WATT!What a game changer!

author: jonpaul
author_rank: Super Contributor
timestamp: November 02, 2021, 06:46:12 am
content: 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_powerSide 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 EEBon chanceJon