![]() That distance is different for the 2.4GHz and the 5.4 or 5.8GHz frequency bands. If, by chance, the distance between the wall and the antenna is an exact multiple of the wavelength, it might be possible to get interference. The exact distance between the reflecting surface and the antenna. Rough surfaces (like brick or stone) difract the signal (send it back in many different directions).ģ. Smooth surfaces (like Sheetrock or Plaster) are better reflectors. Walls are (generally) not as effective at directing the signals.Ģ. Dishes are curved with dimensions that put the transmitter/receiver at the focal point. They reflect signals that are coming to them from the source and direct them to an area where they are more effective. ![]() Surface Reflectivity to the wavelength signal - Dish reflectors do just that. ![]() Here are a few that I think are most important (IMO and not necessarily in actual importance).ġ. The placement of an antenna near a wall and its effect on the signal strength/quality will, as other posters have already stated, depend on many factors. Here is a little FAQ that I found which is food for thought: I am not an antennna designer or even an expert. ![]() Therefore - does an antenna's distance from a wall matter? Is six inches better than 1 inch? Is 18 inches better than 6? The nearness to a wall might create a validation-error at the Antenna itself if the "flight of WiFi bomber signals" required a flight-formation transit. I prefer to believe packet-validation is only performed upon Destination Receipt, or perhaps in Transmit Checks (the router knows "I coughed - I'll just retransmit that signal now, automatically"). This assumes, then, that a WiFi signal can self-validate in-flight (NO, IT CANNOT) and thus it could send back re-transmit requests to the WiFi origin point. I think I need to find out if a signal, once it leaves the antenna, is broken into some packet-sequence that requires "flight distance to form up", like a 300-plane bomber raid takes an hour for all to take-off, so they circle and wait for everyone and then 'form up'. Does an antenna's nearness to a wall create a 'splash-back' effect for WiFi signals? (Let's assume it's a transmit-thru capable wall, too.) ![]()
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