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Engineers Discover How To Make Antennas For Wireless Communication 100x Smaller Than Their Current Size (sciencemag.org)
Engineers have figured out how to make antennas for wireless communication 100 times smaller than their current size, an advance that could lead to tiny brain implants, micro-medical devices, or phones you can wear on your finger. Science Magazine reports: The new mini-antennas play off the difference between electromagnetic (EM) waves, such as light and radio waves, and acoustic waves, such as sound and inaudible vibrations. EM waves are fluctuations in an electromagnetic field, and they travel at light speed -- an astounding 300,000,000 meters per second. Acoustic waves are the jiggling of matter, and they travel at the much slower speed of sound -- in a solid, typically a few thousand meters per second. So, at any given frequency, an EM wave has a much longer wavelength than an acoustic wave. Antennas receive information by resonating with EM waves, which they convert into electrical voltage. For such resonance to occur, a traditional antenna's length must roughly match the wavelength of the EM wave it receives, meaning that the antenna must be relatively big. However, like a guitar string, an antenna can also resonate with acoustic waves. The new antennas take advantage of this fact. They will pick up EM waves of a given frequency if its size matches the wavelength of the much shorter acoustic waves of the same frequency. That means that that for any given signal frequency, the antennas can be much smaller. The trick is, of course, to quickly turn the incoming EM waves into acoustic waves.
The team created two kinds of acoustic antennas. One has a circular membrane, which works for frequencies in the gigahertz range, including those for WiFi. The other has a rectangular membrane, suitable for megahertz frequencies used for TV and radio. Each is less than a millimeter across, and both can be manufactured together on a single chip. When researchers tested one of the antennas in a specially insulated room, they found that compared to a conventional ring antenna of the same size, it sent and received 2.5 gigahertz signals about 100,000 times more efficiently, they report in Nature Communications.
The team created two kinds of acoustic antennas. One has a circular membrane, which works for frequencies in the gigahertz range, including those for WiFi. The other has a rectangular membrane, suitable for megahertz frequencies used for TV and radio. Each is less than a millimeter across, and both can be manufactured together on a single chip. When researchers tested one of the antennas in a specially insulated room, they found that compared to a conventional ring antenna of the same size, it sent and received 2.5 gigahertz signals about 100,000 times more efficiently, they report in Nature Communications.
Over-The-Air television
Wait! What? Is that legal? I'm going to ask my gender transition counselor about that. I don't believe people really broadcast valuable content around... no way bro.
Antennas in my fillings are receiving Ronald Reagan speeches about host files.
APPS!
No more ... having a lightening attractor on the roof.
Not only does a white roof look better, it actively prevents global warming, as it reflects more sunlight back into space. If anything we need to lighten more of them!
Correct. Improvements to batteries happen constantly but never make it to the people. To the people.
(STORED) POWER TO THE PEOPLE!!!
Wanna buy a shirt?
https://www.redbubble.com/people/stealthfinger/shop?asc=u
So, next to feeling the EM waves of my WiFi router i will soon also be able to hear them.
I wonder what "they" will tell me to do....
Why are other peoples sig's always more witty ???
There are many words for them my son, "progressives, liberals, antifa, blm, snowflake". You'll know them by their violent behavior and inability to co-exist with any who do not share the voices in their heads.
Actually, that does a lotta splainin.