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Energous WattUp mid-range power transmitter granted approval by FCC

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Wireless charging technology company Energous announced that it has received Federal Communications Commission certification of the WattUp Mid Field transmitter, which when perfected will deliver RF-based power to compatible devices at a distance of three feet.

The company notes that the latest demonstrated version of the technology isn't brand-specific, and can deliver power with a device in contact with the charger, or to devices a maximum of three feet away.

WattUp technology has three range bands, contact or short, the now approved three-foot mid-range, and 15-foot long-range which remains not approved. At present it is unclear exactly how practical a three-foot transmission range will be other than on a user's desk for compatible phones, laptops, and input devices.

The FCC approval is the first of its kind to use a new category of FCC rules allowing for higher power delivery at range.

However, FCC approval doesn't mean that the device is shipping in any form — and the company has had a few missteps along the way.

During the 2017 Consumer Electronics Show, Energous CEO Steve Rizzone said that the company had signed a deal with "one of the largest consumer electronics companies in the world."

"I cannot tell you who it is," Energous Rizzone said. "But, I can virtually guarantee that you have products from this company on your person, sitting on your desk, or at home."

In December 2016, Energous inked a deal to develop and market hardware components through longtime Apple chip supplier Dialog Semiconductor, suggesting a future iPhone might support similar technology.

Apple is Dialog's biggest consumer electronics contract, and is believed to account for more than 70 percent of the firm's revenues. Further, Energous in a recent quarterly conference call said "most, if not all, of Energous' early adopters are existing Dialog customers."

Under the deal's terms, Dialog is investing $10 million in Energous to become the firm's exclusive component supplier. For Energous, the partnership grants access to Dialog's sales and distribution channels

Energous and Dialog launched the DA4100 RF-Transmit integrated circuit integrated in the WattUp platform in February, and promised to ship by the end of the year.

The WattUp platform uses small antennas to transfer power, instead of relying on a system of inductive charging coils. This change in transmission technology greatly increases the distance devices can be from the power transmitter, allowing users to place the charging smartphones and tablets a few feet away, rather than placing them on a special mat or using a specific magnetic connector, as used by existing systems.

Energous itself has previously cranked up the rumor mill without delivering, however. In March 2015, the company revealed a development and licensing agreement with a "tier one" consumer electronics company, and name-checked Apple in a regulatory filing. Nothing materialized from either the licensing agreement, or the regulatory filing.

The company claimed at the 2015 Consumer Electronics Show that it would be shipping before the end of that year, as well.

Energous will be demonstrating the WattUp technology at the 2018 Consumer Electronics Show, between Jan 9. and Jan. 12.



31 Comments

macseeker 8 Years · 541 comments

Wonder if it will be safe to be near. Too much RF radiation is bad for the body.

jdw 18 Years · 1457 comments

Power carried by microwaves?  I recall one of my engineering professors back in the day (1990?) talk of power transfer from space using such tech.  A satellite generating the power would beam it back to earth.  The main caveat is that if the satellite moved even a tiny bit during the transfer, you'd spray all that power/radiation across wide swaths of terrain.  Any follow-up article on this should focus on how safe it is.

Mike Wuerthele 8 Years · 6906 comments

jdw said:
Power carried by microwaves?  I recall one of my engineering professors back in the day (1990?) talk of power transfer from space using such tech.  A satellite generating the power would beam it back to earth.  The main caveat is that if the satellite moved even a tiny bit during the transfer, you'd spray all that power/radiation across wide swaths of terrain.  Any follow-up article on this should focus on how safe it is.

Not microwaves, no. Just straight low-power, non-ionizing RF.

The FCC approval used for it can't be used for microwave transmitters.

erokthemicright 10 Years · 41 comments

Article says 3ft. Product video says 15ft. Very amazing tech though! 

mikethemartian 18 Years · 1493 comments

macseeker said:
Wonder if it will be safe to be near. Too much RF radiation is bad for the body.

The visible light off a candle is probably more dangerous. To ionize an atom a photon (light quanta) has to have enough energy to knock an electron out of its orbit. The energy of a photon scales with frequency (E=h*f where h is Planck’s constant). The frequency of a visible photon is on the order of 10^14 Hz. I don’t know what the frequency of the RF this product uses but if it is about the same as a WiFi signal that would be about 10^9 Hz range. That means a visible light photon has about 100,000 times the energy of a GHz RF photon. I personally have never heard of a visible light photon having enough energy to ionize an atom. That occurs when you get in the x-ray regime of 10^16 Hz.

Also you can’t ionize an electron that requires a 10^16 Hz photon with 10,000,000 RF frequency photons even though added all together they would have the same energy as the one x-ray photon by itself. That is prohibited by Einstein’s photoelectric effect for which he won the Nobel prize in physics for.