It makes the signal directional and therefore stronger, like a satellite dish, except in reverse.
A satellite dish focuses the received signal from one direction to a single point at the lnb, this uses the same principles in reverse to focus the radiated signal from the wifi antenna and reflect it in one direction.
Good if you have a dead spot in your houses coverage, but only for one direction. Not so good if you need general stronger coverage, as you are better off getting a bigger antenna for the router instead.
All the pictures and videos contained on Laughterizer.weebly.com were collected from different public sources, including different websites, considered to be in public domain. Laughterizer.weebly.com makes every attempt possible to source the artist or photographer, but sometimes we cannot find the exact information. We respect the work of others, that is why we always try to put a link to the source where images were found. If you believe that your work has been copied and posted without your permission or in any way that constitutes copyright infringement, please contact us at email@example.com . Material that violates your rights will be removed as soon as possible.