ne0h_BR Posted February 2, 2015 Posted February 2, 2015 Good afternoon! I wonder if I can make an antenna for my USB WIFI device. It is Aluminum. I wonder if it's too small? If so, what the minimal steps to make one? The measures that are aluminum I can? and Quote
cooper Posted February 2, 2015 Posted February 2, 2015 (edited) According to this online cantenna calculator the diameter is too small for 2.4GHz. The minimum appears to be 73mm while the ideal is somewhere near 90-95mm. You can use it for 5GHz, even though it's too large for this (the ideal here is about 35mm according to that calculator) - the large size means more disturbance can come in, but due to the can interference coming from the side would still be avoided so it's not a complete loss. But your best best is still finding someone with a bigger cannon... Edited February 2, 2015 by Cooper Quote
ne0h_BR Posted February 2, 2015 Author Posted February 2, 2015 So that's? By my research ... Thanks for the quick response. Quote
cooper Posted February 2, 2015 Posted February 2, 2015 Just punch the dimensions into the calculator. When they're off the thing will say so. Note that for optimal results you want the can to be as straight as possible and the bottom as flat as possible. Andrew McNeil, WIFI antenna guru, often uses metal toilet brush holders because their dimensions are very close to ideal, completely straight and they cost comparatively next to nothing. Quote
ne0h_BR Posted February 2, 2015 Author Posted February 2, 2015 Great idea! Thank you very much! Had not thought of that! And I have this at home Quote
barry99705 Posted February 3, 2015 Posted February 3, 2015 So that's? By my research ... Thanks for the quick response. No, it needs to have smooth sides. Quote
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