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.
Powerful homemade WiFi antenna

Antenna characteristics

The 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;
  • Photoresist;
  • Chloride iron for board etching;
  • Textolite spray can;
  • Soda, acetone or alcohol;
  • Hardware: bolts per 3 mm - 12 pcs, nuts - 32 pcs.
Powerful self-made WiFi antenna
Powerful self-made WiFi antenna
Powerful home-made WiFi antenna
Tools:
  • 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;
  • Sandpaper-null;
  • Gun for hot glue;
  • Kern, hammer;
  • Metal ruler for marking holes.

Making Wi-Fi antennas

Stage one - we make a panel of vibrators

Mark 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.
Powerful self-made WiFi antenna
Powerful self-made WiFi antenna
Powerful self-made WiFi antenna
Powerful self-made WiFi antenna
Powerful homemade WiFi antenna
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.
Powerful homemade WiFi antenna
Powerful self-made WiFi antenna
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.
Powerful self-made WiFi antenna
Powerful self-made WiFi antenna
Powerful self-made WiFi antenna
Powerful homemade WiFi antenna
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.
Powerful self-made WiFi antenna
Powerful self-made WiFi antenna
Powerful self-made WiFi antenna
Powerful homemade wifiAntenna
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.
 Powerful homemade WiFi antenna
 Powerful home WiFi antenna
 Powerful homemade WiFi antenna
Now you need to additionally heat the photoresist so that it sticks firmly to the surface of the getinax. Remove the template, a sheet of glass, and heat the film with a hair dryer or iron through the paper. Remove the top protective layer of the photoresist.
Powerful homemade WiFi antenna
Powerful self-made WiFi antenna
Powerful homemade WiFi antenna
Powerful homemade WiFi antenna We wash off the lighted photoresist in a solution of baking soda by placing a plate of Getinax in the bath.After a few minutes, we remove the remnants of the film with a used toothbrush.
Powerful self-made WiFi antenna
Powerful homemade WiFi antenna
Powerful homemade WiFi antenna Getinaks ready for pickling. We raise the ferric chloride in warm water, and dip the plate into a container with a solution. It should be stirred occasionally.Powerful homemade WiFi antennaPowerful homemade WiFi antennaPowerful homemade WiFi antenna We saturate the old alkali solution with soda ash, and place a plate in it to get rid of the remaining photoresist. The resulting board is washed with plain water.
Powerful self-made WiFi antenna
Powerful self-made WiFi antenna
Powerful self-made WiFi antenna
Powerfulhomemade WiFi antenna
Mark up the centers of the rectangles of vibrators on the board, and core them for drilling. The hole must be made under the mounting bolts 3 mm. The author used a stepper or precision conical drill, which is convenient to remove burrs.
 Powerful self-made WiFi antenna
 Powerful home-made WiFi antenna
 Powerful homemade WiFi antenna
 Powerful homemade WiFi antenna
 Powerful home-made WiFi antenna
 Powerful homemade WiFi antenna

Stage Two - Preparing a Reflector

From 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.
Powerful self-made WiFi antenna
Powerful self-made WiFi antenna
Powerful self-made WiFi antenna
Powerful homemade WiFi antenna
The bolts are tightened with two nuts on the back side of the plate, making the necessary gap between the reflector of 3 mm, and the total distance between the vibrators and the reflector - 6 mm. We fix the tin with the help of the third nut.
Powerful self-made WiFi antenna
Powerful self-made WiFi antenna
Powerful self-made WiFi antenna
Powerful self-made WiFi antenna
Powerful self-made WiFi antenna
Powerful self-made WiFi antenna
Powerful homemade WiFi antenna
In the upper part of the reflector we make a hole for the coaxial cable, the central core of which is to be soldered to the vibrator plate and the braid to the reflector. Solder the second end of the cable external antenna to the router.It is attached to the reflector from the back of the antenna with hot glue.
Powerful self-made WiFi antenna
Powerful self-made WiFi antenna
Powerful self-made WiFi antenna
Powerful self-made WiFi antenna
Powerful self-made WiFi antenna
Powerful homemade WiFi antenna
Protect the front side of the vibrator board from oxidation with an aerosol colorless varnish.
Powerful self-made WiFi antenna
Powerful self-made WiFi antenna
Powerful homemade WiFi antenna
For home use, this antenna can be placed on a windowsill or on a balcony. If it is planned to use it in outdoor conditions, any bracket leading to a mast on the roof or outside the window easily clings to the reflector.

Related News:


Dress with openwork-embossed patterns
Pencil Scroll
Very simple light-salted forest mushrooms
Bulk Jelly Flowers
Cardboard Roll Snowman
Antenna for smartphone in 3 minutes
Gift box with your hands from cardboard: a diagram and a photo
Three-color picture