External UMTS antenna

Hello

I live in village, where the signal of my mobile network is very low and therefore I have a poor quality connection to the Internet via HSDPA modem. Can someone tell me if external antenna such as this BESTPARTNER.biz - wireless technologies - wifi 2,4 GHz 3,5 GHz 5 GHz antennas accessories tools cables - wireless networks can help me?

It most definitely would, just keep in mind high gain antennas like that are directional so you have to keep it aimed at the local tower.