Sunday, April 24, 2011

DIY- Signal Booster/Antenna for 3G Data Cards

Hello Dear Readers,

Today I have come up with a simple way to create an Antenna/Signal Booster for your 3G Data cards. After implementing this project I found a gain of almost 10-15db.

The signal strength before implementation was -87db....
Signal Strength before implementation

now after implementation the signal strength is -69db, since the number is negative  the smaller the number the better signal.

Signal Strength after implementation

So lets begin and build a signal booster antenna.

Material Required:
  1. An empty plastic bottle, You can use an empty bottle from Pepsi, Coke, or any drink of your choice. 
  2. A scissor
  3. Some Aluminum foil.(You can find some in your kitchen)
  4. A Cello Tape
  5. An USB Male-Female extension cable (as long as you wish).
Data Card, Male Female USB Extension cable

Lets begin constructing out antenna.
  • Cut the plastic bottle in a shape as shown below.
Bottle With the Cut and Aluminum Foil Attached.

  • Now you can either paste or staple the Aluminum Foil inside the bottle as shown above.
  • Once done insert the the data card inside the bottle, and use the extension cable to connect your data card to your system.
  • The end result would be as shown below.
Antenna/Signal Booster
 Once done connect the data card to your PC and check for signal strength. Move the the antenna as required to get a maximum gain.
It might not look so cool, but the results are cool. You can put in your creativity and make it look cool as well.

I hope you enjoy building one of your own and find it helpful.

Please do share your experience and any ideas you might have to improve this project, and I'll happy to consider some great ideas.

Thank You !


  1. works like a charm....thanks man!!

  2. @JAFRU: I am glad it helped you :)
    Keep visiting for more DIY's

  3. will it work for my bsnl evdo cdma?

  4. I have personally see couple of antenna which are hanged outside of the houses. When i was visited my colleague home, i have also saw same antenna. Finally i have got that it was mobile signal booster which 100% increase signal strength. Mobile signal booster is good for those users who are tired from their slow 3g Internet.
    signal boosters

  5. what is this application to measure the signal strength???

    1. The application used here to measure signal strength is MDMA. you can also check it in Mobile partner shipped with data card.