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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. K0OKS

    K0OKS Ham Member QRZ Page

    RFI aside...

    This is a complete waste of energy. Just plug the damn thing in. Is it really that hard?

    Given the number of phones in the world we are talking about a significant amount of energy wasted.

    To paraphrase Bill Shakespeare, this is a device sold to an idiot, full of hum and buzzing, transmitting nothing.
     
    AG7LR, KQ6XA, VE7DXW and 1 other person like this.
  2. W8YIH

    W8YIH Ham Member QRZ Page

    Great discussion and great participants!

    After reading all the responses I think the problem has already been solved here collectively.

    "If you can think of it you can do it!" so Mr.Tesla is sitting on the cloud and smiling. He was a visionary without enough technology in SHF range and signal processing.

    As W1YW mentioned there is a big demand for such a system and since he is also involved in the research in this field I am sure it is not a technological "pipe dream".

    My understanding at totally amateur level is IMHO SHF + antennas with ultra concentrated pencil like beam(s) will make it feasible.

    Maybe some type of active beam forming antenna arrays on both ends. System can detect and track devices, poll power levels and than form almost laser like beam, and automatically start charging pointing at selected device it's narrow RF beam with all available power.
    If few devices need charging than maybe 2 beams at half the power etc.

    Another subsystem can be monitoring power transfer/scatter levels and if beam starts to be attenuated with characteristics of moving "flesh like" object beam is turned off and system starts "pinging" receiver awaiting clear path.

    So system should be safe, no exposure as most energy goes to target and if user approaches the "charging path" system stops charging.

    If W1YW will design an active 3-D beam forming antenna arrays without need for any moving parts that can be i.e. an ornament on the ceiling or lampshade etc. we may finally stop furnishing our homes with countless wallwarts generating RF too.

    Power level is not that important as devices are under charge almost all the time so they can trickle charge 24/7 instead of within 2 hrs because we are addicted to our smartphones etc and can't wait more than that.

    Just my amateur 0.02$

    Happy New Year 2018!
    73
     
    K3RW and W4RAV like this.
  3. AA7EJ

    AA7EJ Ham Member QRZ Page

    Contribution to discussion is appreciated, thanks.

    Maybe I need to patent my ESA - Electronically Steerable Array.

    As Tevye ( Fidler on the roof ) said - "on the other hand" - ever since I got into electronics , and for matter of fact into any project, my motto has been "KISS" - Keep it simple stupid.

    This is ERG - "electronic Rube Goldberg " for sure .
    But I am prejudiced - I do not own smart phone - just little toy Nemo swimming in paper wight powered by solar cell (!).

    73 Shirley
     
  4. KQ6XA

    KQ6XA Ham Member QRZ Page

    I just wonder if grid power conservation standards organizations (states, Japan, and Europe) will ban most of these kinds of power-at-distance devices due to such pitifully low efficiency.

    Not green enough.

    Here in California, they banned older linear charging transformers (wall warts, etc) below a certain efficiency level many years ago, and mandated new standards that require auto shut off (below around 15%) when not actually charging. The "must use a switching power supply law" applied to external chargers for any device capable of playing music or video from memory.... something like that. For a radio-only devices, manufacturers can still design with linear transformers.
     
    Last edited: Jan 2, 2018
    VE7DXW and W0PV like this.
  5. KH2BR

    KH2BR Ham Member QRZ Page

    Well, That sure is a nice room.
    More probable unsafe radiation exposure. Wont fly in California I bet !!
     
    VE7DXW likes this.
  6. W8OKX

    W8OKX Ham Member QRZ Page

    Why not use 2.45 GHz at a couple watts and use it to charge batteries AND warm up food?
    (For those of us licensed after the beginning of the current millennium, the above was meant as sarcasm.)

    This general idea is about as dumb as Tesla's broader dream of wireless power distribution. I'm imagining young children developing brain tumors before they reach school age. On one hand, we have people panicking over cell phone ERP. On the other hand, similar-minded folks think PaD is a great idea. I for one, think this concept has a very high danger to convenience ratio and isn't even worth the research it would take to investigate its practicality for home use.
     
    Last edited: Jan 2, 2018
    K3RW, VE7DXW and PA0MHS like this.
  7. KI7HSB

    KI7HSB XML Subscriber QRZ Page


    I might imagine, he's smiling for the same reason Bob is....

    smiling-bob.png
     
  8. KI7HSB

    KI7HSB XML Subscriber QRZ Page

  9. KI7HSB

    KI7HSB XML Subscriber QRZ Page

    And after all, isn't that the most important thing to today's young tech-crazed, brainless, short sighted, easily impressed, 'can't wait for the future', trophy just for showing up, millennial consumer?
     
  10. W1YW

    W1YW Ham Member QRZ Page

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