The team thus developed an innovative tool for calculating the additional obstacle, which allows to obtain fast results regardless of the two-dimensional complexity of the additional obstacle. accurately calculating the exact shape of the anti-reflective coating). The difficulty is that the structure of the obstacles added to the wave path has to be carefully designed: it has to match the reflection pattern of those same waves by the initial obstacle (i.e. “This additional obstacle allows to guide the waves in the initial maze to follow totally transmitted paths, eliminating any reflection, regardless of the direction of illumination.” Matthieu Davy, Assistant Professor in Electronics at the Université de Rennes, said: The idea of essentially adding a second (additional) obstacle to the first one in order to enable such signals to achieve an “ almost perfect transmission” when passing through the wall is somewhat of a counter-intuitive solution, but there’s method in the madness. a wall) and effectively make it translucent to all incoming light waves (radio waves are just another form of light) by placing a tailored complementary medium in front of it. ![]() Tackling WallsĪccording to the team of scientists, which have published their results in the journal Nature (PDF), the solution to this challenge is to take that “ randomly disordered medium” (i.e. Put another way, the walls in your home are a bit like a complicated labyrinth and some of those you send into that maze won’t make it through, while others will be knackered once they reach the other side (sounds a bit like how we all feel when watching one of those political leader debates on TV). The signal may go through, but it will be much weaker once it reaches the other side, assuming it reaches the other side at all.Īn electromagnetic wave that strikes the surface of a wall will see some of its signal passing through (refraction), while another part will get reflected and the last bit simply ends up being absorbed. ![]() Indeed, as most people will already know, walls are the arch nemesis of any home wireless network – particularly if your walls happen to be very thick or full of material with a fair bit of metal. The latter two can carry more data, but their waves are much weaker when it comes to penetrating through walls, and thus the best speeds are only achieved when you’re sitting much closer to the router. ![]() The choice of what radio band you connect to is also another consideration, with the lower frequencies of 2.4GHz delivering slower speeds but better coverage than higher frequencies like 5GHz or 6GHz. Researchers at the Vienna University of Technology and the University of Rennes in Austria have found an interesting solution that could help WiFi signals from your local wireless network to more effectively penetrate through walls and boost coverage, which can be thought of as being similar to an anti-reflective coating on glasses.Īt present if you want to boost the wireless ( WiFi) signal from your home broadband router then it usually involves a mix of approaches, such as positioning your router (and or its antennas) in the best location possible and attaching additional signal repeaters (mesh networks) or extender devices.
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