Powerful homemade Wi-Fi antenna
The Internet today is necessary as air, and modern life without it is simply unthinkable. And how happy it is to realize that there are more and more free Wi-Fi access points. But not everyone can use them, because the signal is not strong enough. In this situation, the FA-20 panel antenna, which we will offer you to do it yourself today, will help out. In fact, this device is quite simple and will not cause difficulties in manufacturing, even in a regular apartment. But the benefits of it will be pretty tangible, and maybe even someone from the radio amateurs will push to make such equipment seriously.Tools:On a transparent film for inkjet printers, we are printing an antenna vibrator pattern. It will turn out from two sheets which then easily connect among themselves.For etching using photoresist technology, you need to prepare the foil side of the getinax by stripping it with a zero. Degrease surfaces with acetone or alcohol.Place the photoresist film on the getinax, cutting it to size with scissors. Remove the protective layer and glue photoresist, getting rid of air bubbles by rolling rubber wallpaper roll.After that, we apply a film of the vibrator template, and cover it with ordinary glass.For the light of the photoresist we use an ultraviolet lamp.The exposure time for different manufacturers of this material is different.The author for his film ordered from China needed 5 sec on each processed area of the board.
Antenna characteristicsThe panel antenna consists of 2 main parts - a reflector and vibrators. The line of vibrators is connected by a common pin, from which a coaxial cable is connected, leading to the socket of the external Wi-Fi antenna of the router attached to the back of the device.The antenna works as an amplifier, which can be judged by comparing the signal power from the standard antenna of the router (the author used the tp-link TL-WN722N) - 5db, and the FA-20 - 22db. Required materials:
- Foil textolite single-sided or getinax, 430x200 mm, thickness - 1.5 mm;
- Tin section (best galvanized), 435x205 mm, thickness 0.5-1 mm;
- Television coaxial cable RG-8X 50 Ohm;
- Drawing pattern of antenna vibrators printed on vinyl;
- Chloride iron for board etching;
- Textolite spray can;
- Soda, acetone or alcohol;
- Hardware: bolts per 3 mm - 12 pcs, nuts - 32 pcs.
- Drill with a cutting disc for cutting getinaks;
- Drill with 3-3.5 mm drill;
- Soldering iron with solder;
- Paint knife, scissors;
- Pliers, Metal Scissors;
- Building Rubber Roller for Rolling Films;
- Tray for Antenna Board Etching;
- A piece of glass and a UV lamp forphotolithography;
- Hair dryer or iron to heat the photoresist;
- Gun for hot glue;
- Kern, hammer;
- Metal ruler for marking holes.
Making Wi-Fi antennas
Stage one - we make a panel of vibratorsMark up the sheet of foiled PCB to the size of our antenna, and cut out a drill cutting disc. This procedure can be performed with a regular paint knife, making cuts along the marking lines on both sides of the sheet, and then breaking them off manually.
Stage Two - Preparing a ReflectorFrom a piece of galvanized tin, the most resistant to corrosive effects sion, cut out a copy of our plate vibrators. Holes for fastening bolts are easy to transfer to the tin, making the notches the same drill. We drill holes on the tin through the wooden lining.
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