K6JEK
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RF in the shack
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« on: February 16, 2012, 11:53:57 AM » |
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Spray on nano particle antenna works much better than standard antennas. That's the claim. Here's a clip from a Google event where the CEO talks about it. It's not April 1 yet, is it? http://www.wesolveforx.com/#t=t&n=ac366b5b |
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IN3IEX
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« Reply #1 on: February 16, 2012, 12:04:27 PM » |
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Looks very strange...
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W7TFO
WTF-OVER in 7 land Dennis
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IN A TRIODE NO ONE CAN HEAR YOUR SCREEN
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« Reply #3 on: February 16, 2012, 01:48:13 PM » |
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Indeed, a distributed capacitance directly on a radiating surface may affect the efficiency.
The underwater aspect of it is most intriguing.
One ought to be very careful of overspray, as most nanoparticles are dangerous to respiratory systems.
73GD
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Just pacing the Farady cage...
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Steve - K4HX
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« Reply #4 on: February 16, 2012, 07:26:50 PM » |
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Or not. It's used widely in microwave applications.
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K5WLF
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« Reply #5 on: February 16, 2012, 09:15:11 PM » |
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Pretty strange. Somehow I can't envision a half-wave 160m antenna in a can. How does it handle full legal limit?
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KL7OF
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« Reply #6 on: February 17, 2012, 01:44:25 AM » |
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FM
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WA1GFZ
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« Reply #7 on: February 17, 2012, 12:10:50 PM » |
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I'm more use to a spray on ground. Start with a large volume of beer
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ve6pg
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« Reply #8 on: February 18, 2012, 11:56:10 AM » |
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..aircraft have antennas in the wing to body fairings...they are called "flame spray"...repairs can be made with an epoxy, which is 99% silver, and using the hardener...
..tim..
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...Yes, my name is Tim Smith...sk..
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DMOD
AC0OB - A Place where Thermionic Emitters Rule!
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« Reply #9 on: February 24, 2012, 04:24:52 PM » |
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Now we know where politicians get their hair spray?  Phil - AC0OB |
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Charlie Eppes: Dad would be so happy if we married a doctor. Don Eppes: Yeah, well, Dad would be happy if I married someone with a pulse. NUMB3RS  |
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AC0TX
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« Reply #10 on: February 24, 2012, 07:40:21 PM » |
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This is great for the folks that wear tin foil hats
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K1JJ
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"Let's go kayaking, Tommy!" - Yaz
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« Reply #11 on: February 24, 2012, 10:59:33 PM » |
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heheheh - Sounds almost like a paint-on "CCD" antenna with all those so-called tiny capacitors.
T
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Use an "AM Courtesy Filter" to limit transmit audio bandwidth +-4.5 KHz, +-6.0 KHz or +-8.0 KHz when needed. Easily done in DSP.
Wise Words : "I'm as old as I've ever been... and I'm as young as I'll ever be."
There's nothing like an old dog.
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KA2QFX
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Mark
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« Reply #12 on: February 25, 2012, 10:03:25 AM » |
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This guy definitely is no engineer from the way he speaks. Yes, a CCD antenna of conductive flakes in a non-conducting carrier/substrate. Interesting. I could see some applications for this but the parameters of it's use must be much more constrained than he intimates. I'm still rather skeptical however.
I've used Chomerics conductive "paints" in several applications in the past. We even tried spaying a UHF fractal antenna in a sheet of mylar. It worked until the substrate paint started to fracture. I imagine capacitive coupling between particles would all but eliminate that issue.
I'm not so sure his particles meet the criteria of nano-particles however.
It'll be interesting to see where this goes.
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Opcom
Patrick J. / KD5OEI
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« Reply #13 on: February 25, 2012, 11:45:45 AM » |
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spray the sky!
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Radio Candelstein - Flagship Station of the NRK Radio Network.
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Steve - K4HX
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« Reply #14 on: February 25, 2012, 12:20:37 PM » |
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The sun does that every day. |
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KJ3Z
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« Reply #15 on: February 25, 2012, 01:20:15 PM » |
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I suspect a spray on antenna of this sort would have rather bad, internally generated intermodulation distortion from the high current concentration that occurs at each of the huge number of particle to particle inter-connection points. You can get troublesome intermodulation interference generation just from a less than perfect metal plating job on feedline coaxial connectors or even from the rough interface between pcb copper and the underlying epoxy impregnated substrate.
Bruce KJ3Z
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Steve - K4HX
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« Reply #16 on: February 28, 2012, 02:11:47 PM » |
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You make a good point. But this problem has already been solved by sintering. Antennas (even at millimeter wavelengths) can now be printed on surfaces much in the same way an ink-jet printer works.
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The Slab Bacon
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« Reply #17 on: February 28, 2012, 02:43:04 PM » |
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FM
Haven't heard that one in a long while. We used to put that on service tickets for those mysterious intermittant problems, when ya didnt know what you did that fixed it!!  |
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"No is not an answer and failure is not an option!"
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