Tag Archives: RadioFrequency
How RFID tags became trendy
World’s smallest FM receiver built with graphene, ruined by Psy
Researchers have been using graphene to develop an assortment of technologically advanced things for a while, from camera sensors and contact lenses all the way to frickin' lasers. That's why it's not a surprise to see a group of engineers from Columbia University create the world's smallest FM transmitter using the atom-thick material. The end product isn't just for show, either, as it can pump tunes over the airwaves to a regular FM radio -- the team even used Gangnam Style to prove that it works. As interesting as the teensy transmitter is, the engineers have no plans to build a radio for ants, and this is merely part of a larger study into nano-electromechanical systems. Now all we need is for someone to make a tiny violin and a pair of tweezers small enough for us to play.
Filed under: Alt
Via: IEEE
Source: Columbia University, Nature
Phi: a wireless re-routing card that puts you in control of the airwaves (video)
For all the talk of convergence in mobile devices, there's relatively little chatter about the coming together of wireless signals themselves. In other words, why should we have a separate device to interact with each type of wireless signal? And so, with that intriguing question, begins the pitch for a new device call Phi. It's a $750 antennae-laden PCIe card that slots into a desktop and gathers up wireless signals that are flying around the home -- so long as they have a frequency below 4GHz and don't involve bank-busting neutrinos. The card then allows custom apps to re-direct those transmissions as you like: potentially acting as a "base station" so you can make free calls from your cell phone, or receiving over-the-air HD transmissions which you can play on your tablet, or doing whatever else hobbyists and devs can cook up. Phi is still version 0.1 and Linux-only while the startup behind it -- Per Vices -- looks for a Kinect-style blossoming of third-party interest, but with nothing less than a deity-like command over the domestic ether on offer, how could it ever fail?
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Phi: a wireless re-routing card that puts you in control of the airwaves (video) originally appeared on Engadget on Tue, 01 May 2012 06:46:00 EDT. Please see our terms for use of feeds.
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