Double BiQuad (dish) Wifi Antenna

thingiverse

This is a double biquad wifi antenna. Since I am not that good with soldering copper piping and plate, I designed this 3d printed version! I am not sure about the impedance matching of this antenna, I am not an expert, however, it works pretty well, I made a quick test tonight and was able to see about 20 wifi Access points just by pointing the dish in one general direction without taking care of adjusting it correctly.. Transmitting and Receiving works pretty well also, tested with aireplay-ng orienting the antenna correctly would give me 100% transmit packets on seemingly far APs.. Since I've just made the antenna, I didn't have much time to test it, but I'm convinced it's very effective! Instructions You can follow the instructions of this site for detailled build of a double biquad, it will help understand the wiring and the assembly procedure: http://martybugs.net/wireless/biquad/double.cgi Materials: Conductive adhesive tape Non conductive adhesive tape 2 M3 Bolts 2 M3 Nuts 1 RP-TNC Cable (I connect my antenna to a WRT54G-TM) 1 Old Dish antenna with dual LNBF Instructions: Print all the parts once, except for the PlateType1 and PlateType2 which will be printed 2 times each. Assemble the 4 plates, put your conductive tape on the upper surface. Strip RP-TNC Cable so that it can slide in the Tube, but make sure to not put ground wire in the hole, only the white part with the center wire. Put stripped cable end in center hole of 4 plates assembly Connect / Tape the ground wire of the cable to the assembled plate Put conductive tape around the tube Put Tube on center hole with stripped cable end inside Orient the Tube so that you can lay the 2 BiQuads horizontally. Tape the Tube on the 4 plate assembly, make sure you have 0 resistance on the side of the tube and the plate assembly Put Holder Plate on top of tube and screw the Holder Plate in place Put the 2 BiQuads in the square holes of the Holder Plate, the 2 biquads ends should insert cleanly inside the tube Apply conductive tape on all the surface of the 2 biquads, making sure to bridge the middle section of the 2 biquads. (Refer to the the website if this is not clear) Connect ground conductive tape around the tube to the 2 biquads. Connect the signal conductor in the middle of the tube to the 2 biquad ends, make sure ground and signal wire do not touch directly. Apply silicon to exposed ends of the wire on the tube. Secure the cable Press Fit the assembly in the LNBF of a Dish (I unscrewed the top portion with the plastics of my LNBF, and simply pressed the biquad assembly in place, it's secured enough for my use)