Hi,
I've asked my college and now I try to translate what he said to me. I remember you told me that the german language is not your favorite.. ;-)
The idea of a directional antenna is right but it is only just the first of three steps. If you buy an AP the build-in antenna is nearly omnidirectional, that means the electromagnetic output goes everywhere. If you are searching for an AP or a user that uses your AP remember he can be everwhere within the reach of the AP. In a few weeks we organize another recruiting day and give them a change to build a WLAN antenna by there own. My college gave me some papers about the last one and I find for you an similar in the net.
http://martybugs.net/wireless/biquad/I`ll send you the two pdf, nevertheless they are in german look at the pictures. In wlanprojekt.pdf the first two pictures shown on page 7 you will see the result..
Just the picture below shows one of the steps next after you mount a directional antenna on a tripod.
Why? Open the other pdf and look on the outputcharacteristic of that antenna on page three.
What is the trick on it? So the trick is it is directional!
So your choice of
http://www.aliexpress.com/item/Free-shipping-2011-Latest-2-4GHz-18dBi-SMA-High-Gain-Dish-Directional-Antenna-for-WiFi-Wireless/373762221.html will work fine for this purpose on an tripod. You can turn it with the tripod an in/decline by itself. The next step, I told you before, is to measure signal strenght and link quality each heading and inclination (like they did with D-LinkAirPlus shown in the picture below the result pictures last pdf) and then you have to move your point of view with the tripod to do a crossbear!
In the second pdf you can also see a solution with a satellite reflector and something that looks like a "pringle role"
I hope I could help you...
Regards
P.S. how can I send attachment PDF larger than 128k?
General Certification : CPT Practical Submission
