Wednesday, October 17, 2012

WiFi screen


We live on the edge of wireless reception. Even with an external antenna in the window, the signal was not quite strong enough and the connection was frequently dropped. Our friend Halza had the idea to use a strainer as a reflector. This trick works great for us too, and improves the reception considerably.
The WLAN antenna inside the strainer is one of these.

The WLAN signals are in the 2.4 GHz band, which means that one wave length is 12.5 cm. Already a reflecting plane, placed 1/4 wavelength (3.1 cm) behind the antenna should provide constructive interference and some signal gain. A parabolic reflector with the antenna in the focal point provides more. The strainer not exactly a parabola, but has the right general looks.

Lots of variants on this idea are available.

3 comments:

  1. Please paint a face on it. Those handles look like ears.

    ReplyDelete
    Replies
    1. From now on, this strainer is considered cute.

      Delete
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