How to DIY wi-fi booster/signal amplifier?

Is there any possible way to increase wi-fi signal or can make it not fluctuating while it connected? I mean boost it for the better connection? In example, in my room, my laptop only can receive 1 bar only, so I want to boost it to full bar. If someone there got the drawing for the printed board, please do attach it here so I can print it on my board later. I believe the DIY version is more cheaper than buy one at the store. Do include the full name of the components. Your helps will be very much appreciated! thanks!
Asked Mar 03, 2014

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