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Native name
Privately held company
Founded2012 in New York, New York United States
FounderMeredith Perry
Key people
Meredith Perry, Dr. Matthew O'Donnell, Dr. Martine Rothblatt, Chuck Davis, Ken Hertz, Mark Suster
ProductsWireless Power, Ultrasonic Transceivers, Ultrasonic Sensors
ServicesWireless Power

uBeam is a U.S. company that is developing a wireless charging system that is designed to work via ultrasound.


uBeam was founded in 2011 by Meredith Perry while she was a student at the University of Pennsylvania for the school's invention competition, deemed "PennVention".[1] uBeam won PennVention in April 2011 and demonstrated the first prototype of the technology at The Wall Street Journal's All Things Digital Conference, D9 in May 2011.[2][3]

uBeam has received $26 million in investment from venture capitalists and investors including Andreessen Horowitz, Upfront Ventures, Founders Fund as well as billionaire Mark Cuban and former Yahoo! Inc. Chief Executive Marissa Mayer.[4]. Axios reported that uBeam privately demonstrated a working prototype of the technology at the Upfront Summit on February 2, 2017[5]. uBeam publicly demonstrated wirelessly charging several iPhone 7s, Samsung Galaxy S7's, and LEDs simultaneously to USA Today, which was published on the front page of the newspaper on June 1, 2017.[6]

By 2016, all of uBeam's original engineering team had left the company, with some engineers leaving before their stocks had vested.[7]

Also in 2016, the former VP of Engineering Paul Reynolds wrote a series of blog posts stating that uBeam’s technology did not work.[8][9]

In September 2018, Meredith Perry stepped down from her role as CEO as the company changed to a business-to-business model, and was replaced by Jacqueline McCauley.[10]


In November 2015, the company released technical specifications for its proposed system. uBeam's system would transmit ultrasound at frequencies between 45 kHz - 75 kHz, with a sound intensity of 145 dB to 155 dB SPL, and it would use a phased array technique to direct the beam.[4]


Some observers have been critical of the company's ultrasound technology, stating that uBeam's claims are unlikely to be achievable[citation needed]. Critics have also cited problems such as the difficulty of achieving high efficiency in sound transfer, of achieving an unobstructed path for the beam, and the high absorption of high frequency ultrasound in air.[11][12][13][14]

The Australian electrical engineer Dave Jones has been a frequent critic of ubeam, stating it "will NEVER be a practical solution"[15], and has offered detailed explanations on why "it will never work"[16]

Dr. Daniel Rogers, Professor at New York University published a paper, including calculations, stating "IT'S AN IMPOSSIBLE IDEA", and further stating: "crazy ideas that are physically impossible are raising huge sums and getting tons of traction on nothing but dishonest PR".[17]

Ultrasound Safety[edit]

Ultrasound has less potential to damage tissue than ionising radiation; however ultrasound energy has the potential to produce biological effects on the body. Ultrasound waves can heat the tissues slightly. In some cases, it can also produce small pockets of gas in body fluids or tissues (cavitation).[18] The dose response relation between occupational exposure to very high frequency noise and resultant hearing risk is unknown.[19]

The company claims that the beam will cut out automatically if it is intercepted by objects other than the receiver.[20]


  1. ^ "Ubeam". Crunchbase. Retrieved 25 May 2016.
  2. ^ "D9 Video: uBeam Demo". Wsj.com. Retrieved 1 October 2017 – via www.wsj.com.
  3. ^ "New technology beams power over sound waves". 3 June 2011.
  4. ^ a b Constine, Josh (7 November 2015). "uBeam Declassifies Secrets To Try To Prove Wireless Power Is Possible". TechCrunch. Retrieved 2015-11-10.
  5. ^ "uBeam finally shows off its wireless charging tech". Axios.com. 3 February 2017. Retrieved 1 October 2017.
  6. ^ "uBeam's Meredith Perry shows her stealth wireless charging technology really works". Usatoday.com. Retrieved 1 October 2017.
  7. ^ https://www.businessinsider.com/ubeam-former-engineers-doubt-it-can-work-2016-5
  8. ^ https://techcrunch.com/2018/09/20/ubeam/
  9. ^ https://www.cnbc.com/2016/05/12/ex-employee-claims-wireless-charging-start-up-ubeam-is-a-sham.html
  10. ^ "Exclusive: Ubeam CEO Meredith Perry steps down". Axios. Retrieved 2019-08-07.
  11. ^ "Skeptics Zap Wireless Charging | Los Angeles Business Journal". labusinessjournal.com. Retrieved 2016-05-13.
  12. ^ Gomes, Lee (9 November 2015). "Can uBeam's Through-the-Air Phone Charging System Live Up to the Hype?". spectrum.ieee.org. Retrieved 2015-11-10.
  13. ^ Dale, Brady (9 November 2015). "Wireless Charging: uBeam's Headache and Nausea Question". Observer. Retrieved 2015-11-10.
  14. ^ "uBeam FAQ". eevblog. 12 October 2015. Retrieved 2015-11-12.
  15. ^ https://www.eevblog.com/2017/06/23/eevblog-1001-ubeam-ultrasonic-wireless-charging-debunked/
  16. ^ https://www.eevblog.com/2019/06/26/eevblog-1224-ubeam-is-sinking
  17. ^ https://lookatmeimdanny.tumblr.com/post/101432017159/how-putting-10m-into-ubeam-illustrates-everything
  18. ^ Health, Center for Devices and Radiological. "Medical Imaging - Ultrasound Imaging". Fda.gov. Retrieved 1 October 2017.
  19. ^ "OSHA Technical Manual (OTM) | Section III: Chapter 5 - Noise". Osha.gov. Occupational Safety and Health Administration. Retrieved 2017-09-29. This article incorporates text from this source, which is in the public domain.
  20. ^ Constine, Josh (October 8, 2015). "uBeam Finally Reveals The Secret Of How Its Wireless Charging Phone Case Works Safely". TechCrunch. Retrieved 2015-11-10.

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