There was a time not so very long ago when people who wanted satellite TV or radio required dishes several feet across. Those have since been replaced by today’s compact dishes, but now it looks like even those might be on the road to obsolescence. A recent PhD graduate from The Netherlands’ University of Twente has designed a microchip that allows for a grid array of almost-flat antennas to receive satellite signals.
Marcel van de Burgwal’s system would not need to be aimed. Instead, the antenna array would electronically “aim” itself. It is a concept similar to the LOFAR project, in which numerous antennas located across the northeast Dutch countryside are linked together to form a virtual radiotelescopy dish. LOFAR requires a lot of calculations and fast communications, as would van de Burgwal’s system – that’s where the chip comes in.
Instead of the usual elaborate, energy-hungry processors, his system contains multiple smaller, simpler processors on a single chip. They can carry out tasks more flexibly, and can be turned off when not in use. The system’s infrastructure operates as a miniature network, in which TV or radio receivers are defined by software, as opposed to the traditional coils and crystals. The approach allows an entire computer network to be constructed over a space of just a few millimeters.
“Software-defined radio may seem much more complex, but we can pack so much computing power into the space taken up by, for example, a coil that it more than repays the effort”, he stated.
Van de Burgwal also discovered that his multi-processor chip would work well for digital radio reception on smartphones, due to its low energy use. The technology is being further developed by U Twente spin-off company Recore Systems.
http://www.gizmag.com/sqish-the-camouflaged-satellite-dish/9537/
Iran is one of several tyrannies where exiled opposition figures and refugees have taken to creating satellite stations and content in national languages which includes banned news and counter government opinions.
Now if a cheap yet high bandwidth outward signal that could not be detected or censored is developed tyrants will be fit to be tied.
The advantage of the the dish is the fact that it also amplifies the signal. The bigger the dish the more gain. Any electronic device that amplifies signals also amplify the noise the dish does not. How-ever the latest Rf GAS chips have very low noise & the improvement over the last few years has been great. It can only get better. The only noiseless amplifier is the Parametric device though this has loses & is probably why it is not used much these days. Cheers Kiwi
Hey look, Torrey Pines has a phased array satellite antenna. http://www.torreypinestechnologies.com/RF_Systems.html
Maybe he\'s made it easier, but there\'s nothing actually new about this.
Maybe we should send out a call for examples of technologies which have been invented long ago and promise to improve our lives but which everyone is just sitting on and then implement them.