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Intel Research Goes For Long Distance Wi-Fi
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You are currently in Hardware, Internet, Networking, Comms and Security
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Sat Mar 31, 2007 6:14 pm Reply and quote this post
The idea is to develop a low-cost antenna that can transmit and receive Wi-Fi signals over distances as far as 100 kilometers, or about 62 miles.

InformationWeek wrote:
Directional antennas that transmit a straight signal exist today and could do the job, but they lack reliability and are a headache to install. Such devices have to be pointed directly at each other in order to move a signal back and forth. In addition, there's any number of problems that could cause misalignment. Extreme heat or cold can cause a supporting tower to shrink or contract, wind could blow a device off course, or a loose bolt could cause the antenna to shift.

"In India, for example, local kids using the towers as a kind of jungle gym climb to the top and change the direction of the antenna," said Alan Mainwaring, who leads the project for Intel, in an interview.

What Intel and the university want to do is develop a directional antenna that can be steered from a remote location, so it will always stay on target. Existing technology to do that today is too expensive for poor countries. The Intel antenna is expected to cost only a few hundred dollars.

Intel and its partner have developed several generations of prototypes, and believe the antennas being tested the summer, one in southern India, the other in Ghana, will prove the technology is ready for production.

While similar to a TV satellite dish seen on many people's homes in urban areas, the Wi-Fi dish is flat, and the surface covered with hundreds of tiny antennas. In the middle are an emitter and receiver. An electrical charge sent through the small antennas makes it possible to steer the direction of the Wi-Fi signal, Mainwaring said. The antennas' surface can be produced using the same manufacturing methods used to create a printed circuit board, a high-volume, low-cost production process.

If the antenna proves itself in the field, and finds it way to rural areas, it could open up a whole new world of communications for villages in countries in Asia and Africa. "These are villages that have intermittent electricity during the day, and may not have landline phones," Mainwaring said. "Their cellular phone coverage is often not as ubiquitous as we're use to."


I think the technology will eventually find its way to poor nations, and plans to work on getting it there with researchers at the University of California, Berkeley. The university's TIER project, which stands for Technology and Infrastructure for Emerging Regions, has developed small, low-power, single-board computers that could act as routers and relay stations in moving the signal over long distances.

Would you support the idea or invisage it in your area... (Indian users?).

Contributed by Editorial Team, Executive Management Team
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