FCC approves first 'power-at-a-distance' wireless charging device

Discussion in 'Amateur Radio News' started by W4RAV, Dec 28, 2017.

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  1. W4RAV

    W4RAV Ham Member QRZ Page

  2. AB9TX

    AB9TX Premium Subscriber QRZ Page

    Somewhere Nikola Tesla is smiling...
     
    N2IPH, NE2I, N4ZED and 14 others like this.
  3. KA9JLM

    KA9JLM Ham Member QRZ Page

    This must be fake news. The government is off for the holidays until next year.

    Or did they do it when nobody was there to vote on it ?
     
    Last edited: Dec 28, 2017
    W7PEM, W7DAZ and KK2DOG like this.
  4. KB4QAA

    KB4QAA XML Subscriber QRZ Page

    "RFI at a distance".
     
    N4ZED, KM4TIN and W6KKO like this.
  5. WB8VLC

    WB8VLC Ham Member QRZ Page

  6. AL7AQ

    AL7AQ Ham Member QRZ Page

    Oh Right.... RFI source??? The unit operates in the 5.8 Ghz Wireless Band... Did you guys even READ the Specs?
     
    KM4TIN and N8EKT like this.
  7. N4QX

    N4QX Ham Member QRZ Page

    If you look at the equipment authorization grant, the frequency is 913 MHz, which is within an ISM band (shared with the fixed, mobile, and amateur services). We probably have no more issues here than we do with other ISM equipment in the band (there's quite a bit of it, and it's there legally).

    Of broader potential concern is LF and HF-based wireless power transfer systems, being designed to charge car batteries, among other applications that make charging a phone look like child's play. A reasonable explanation of the issue (albeit not fully accurate with respect to timing--it's been at play since at least late 2015) is on the ARRL web site:

    http://www.arrl.org/news/iaru-administrative-council-considers-new-radio-spectrum-pollution-threat

    Some things should keep us up at night. The Energous device ought not be one of them.
     
    KX4IG, KW5M, K0MD and 1 other person like this.
  8. N4QX

    N4QX Ham Member QRZ Page

    The device that secured approval this past week operates at 913 GHz.

    But both bands (902 MHz and 5.8 GHz) are ISM bands. You're never going to get a pristine RF environment in an ISM band; that's a consequence of accommodating non-communication uses of RF (and there are ample reasons to do that).
     
    W1YW likes this.
  9. KQ6XA

    KQ6XA Ham Member QRZ Page

    Anyone remember "LightSquared" ?
    It interfered with GPS and was sued so profusely that it was driven into bankruptcy.
    I predict the same fate is in store for Energous WattUP.
    913 MHz is a powerful transmitter in the middle of the 33 cm ham band (902.0-928.0 MHz).
    It is a shared ISM band, filled with low power cordless phones, cameras, baby monitors, security devices, point-to-point data, and thousands of short-range low-power things living somewhat peacefully together.
    The Energous 913 MHz WattUP system got them approval with the administration-corrupted FCC, but 913 MHz physics is too bulky and inefficient for consumer market viability.
    The 913 MHz WattUP system was simply a ploy to boost their stock, and make it appear that they have a "viable technology" alternative to popular Qi low-frequency 200 kHz power products.

    Energous's real target is a 5.8 GHz system.
    It is a powerful transmitter in the middle of the 5.650-5.925 GHz ham band.
    It also causes severe interference to 5 GHz WiFi.
    Hence the prediction that it will be sued into oblivion if it is ever approved and/or deployed.

    [​IMG]
    5 GHz WiFi Band
     
    Last edited: Dec 28, 2017
    KE0PWA, N3HOE, AC0OB and 6 others like this.
  10. N7ECV

    N7ECV Ham Member QRZ Page

    ugh... MORE noise to contend with....
     
    K3RW likes this.

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