Why are you using your phone for internet? (I'm guessing you mean you're just using your phone as a hotspot at the moment) Do you not have internet in your house? Or is this for using on the move.
Unless your home internet is using ancient equipment, it'll have wireless built in which you can just connect to. If not, then you'll need a wireless router. But we'll probably need a little more info to work out what you need.
The USB dongle you've linked to just receives wireless which, as mentioned above, Macs come with anyway so they seem a bit redundant.
Also, you might want to edit out that link. They're considered a competitor in that regard which is against the rules