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I have a fairly good understanding of the printable antenna concept though the 50 milliwatts sounds like a stretch, but I have no doubts they harvested microwatts to power a temperature sensor.
A new ultra-wideband antenna printed on paper or plastic can harvest ambient energy, enabling wireless sensors to tap into electromagnetic currents in the air around them. The device captures energy from a wide spectrum of frequencies, converts it to direct current, and stores it in capacitors or batteries.
Researchers at Georgia Tech scavenged sufficient microwatts to power a temperature sensor, using the ambient energy produced by a television station signal that was a third of a mile away.
More powerful systems that tap into multiple wireless bands could generate one milliwatt or more — enough to power small wireless sensors and microprocessors. Researchers hope that when it's combined with advanced capacitor technology, the device could provide up to 50 milliwatts.
If you ever heard of a crystal radio, it allows you to hear the radio station without any batteries powering an amplifier. Other types of radios use electronic amplification with transistors, which need to be powered by a power source such as batteries or plugging it in to the wall outlet.
originally posted by: waftist
a reply to: Arbitrageur
Thank you for the reply and info on printable antenna.
I wonder if this ambient energy can be amplified in any way?
Of course. If you read the link about the printable antennas, the researchers are trying different designs, and when they mention the higher power figures (by higher power they mean a full milliwatt instead of just microwatts), they say an antenna design that can collect a broad frequency range of EM might achieve that.
Also, could the design of antenna make a difference too?
If you post your link I'll read it and give you an opinion, but I doubt that "fractal" alone ensures better performance. I suspect I could make a fractal antenna that performs better than a non-fractal antenna, and I also suspect I can make a fractal antenna that performs worse than a non-fractal antenna, so just to say it's fractal doesn't directly imply how well it will perform to me. There are many things to consider, such as whether you want to use the antenna for a narrow frequency range or for a broad frequency range.
I recall reading about fractal antennas being better transmitters. Any truth to that?
These graphene RFID tags sound interesting, but the article doesn't say anything about them being fractal, you have some obsession with fractal?
Would a graphene fractal antenna be a better design?
The graphene RFID antennas have apparently already been commercialized though I don't have any idea how successful the company is, but I see the board includes the 2010 Nobel prize in Physics winners for graphene research.
As far as investment, I meant for graphene in general, and not just this application. It seems this material will be widely used for it's strength and conductive properties in numerous industries, and I feel whomever gets the jump on it's general manufacturing could be big. I will check into the NTS Innovations mentioned in thread.
You're welcome. Post the fractal antenna link if you want some feedback on that.
Well I just wanted to get some input on the article, so again thank you.
originally posted by: Hyperboles
a reply to: delbertlarson
I think you should devise something tangible that proves your aether model then publish this whereever you choose along with your math and word salad
originally posted by: dragonridr
a reply to: delbertlarson
I've never seen someone type so much and not get across a coherent thought. You sir have talent that many politicians would envy.
My favorite line from you.
"Hence, a solenoid simply rotates the aether, and I didn't see how that would lead to forces on moving charges within it."
I'm still laughing at this got to love those magic forces interacting with a non existent aether. I highly suspect you've been huffing aether that may explain this post.