How to Make a Bluetooth Antenna

By Jericho McCune

"Everything is better with Bluetooth" is a saying that was popularized by the television show "The Big Bang Theory." It's hard to argue with that. Bluetooth is a fast, secure way to transfer digital information. Although useful, increasing the range of a Bluetooth connection by making your own antenna can make the technology even more valuable.

Things You'll Need

  • Flat-head screwdriver
  • Soldering iron
  • Desoldering braid
  • Wire cutters
  • Wire stripper
  • Tie-straps, glue or tape (optional)
  • 2 GHz antenna cable

Step 1

Pry the Bluetooth case apart with a flat-head screwdriver. Take the electronics module out.

Step 2

Heat up the existing antenna cable with the soldering iron, and gently pull it free of the electronics module.

Step 3

Remove excess solder from the electronics module using a desoldering braid.

Step 4

Remove the outer insulation from the new antenna cable, and trim the outer shield of the coaxial cable with the wire strippers. Add a little solder to the shield to make it more solid.

Step 5

Expose the center conductor wire by stripping the cable 1/2 inch. Leave some plastic between the wire and shield.

Step 6

Slide the wire through the hole, and bend it at a right angle. The shield should lay against the shield pad.

Step 7

Solder the shield and pad together. Turn the board over and solder the center wire in the hole. Remove any excess wire with the wire clippers.

Step 8

Clip the excess wire poking through the hole, then place the module back in the case and reassemble the two halves. Use tie-straps, glue or tape to hold it together if needed.

Step 9

Replace the module in the case and put the case back together. Use zip ties to hold it together.

Tips & Warnings

  • When soldering the shield to the pad, be careful not to melt through the insulation.
  • Modifying a Bluetooth device in this way can void the warranty of the device.