2.4GHz Duck Antenna RP-SMA

2.4GHz Duck Antenna 2.2dBi with Reverse Polarized - SMA RF connector. Perfect for prototyping with our RF ICs. 50 ohm impedance. 4" long.

Not sure which RF connector you need on your antenna? Check out our RF Connector Guide

2.4GHz Duck Antenna RP-SMA Product Help and Resources

nRF24L01+ Transceiver Hookup Guide

July 30, 2015

A basic getting started guided to the SparkFun Transceiver Breakout - nRF24L01+

Connector Basics

January 18, 2013

Connectors are a major source of confusion for people just beginning electronics. The number of different options, terms, and names of connectors can make selecting one, or finding the one you need, daunting. This article will help you get a jump on the world of connectors.

Naming Conventions for the Different Types of SMA Connectors

Below lists the types of SMA and RPSMA connectors available:

  • SMA male - Center pin, inner threads
  • SMA female - center hole, outer threads


  • RP (reverse polarity) is named after its “thread gender” and has an opposite-gender pin
  • RP-SMA male - center hole, “male” inner threads
  • RP-SMA female - center pin, “female” outer threads"


For more information, try looking at our tutorial about SMA connectors [ https://www.sparkfun.com/tutorials/140 ].


Looking for answers to technical questions?

We welcome your comments and suggestions below. However, if you are looking for solutions to technical questions please see our Technical Assistance page.

  • jalexge / about 13 years ago / 2

    No schematic? haha

  • Member #221415 / about 13 years ago / 2

    Will this work for an xBee pro S2B?

  • fluxTreme / about 15 years ago / 2

    This antenna is a very good alternative to the ceramic chip antennas. It is a nice size and the build quality is very nice in comparison with some cheap antennas that I have used in the past.
    All in all its a great product for a great price!!!

  • Cyberfyn / about 15 years ago / 2

    This antenna is a perfect fit for transmitters with the JR/Spektrum 2.4G module (Radio Control Models) and is a great retro-fit item to tidy up the installation. I have tested it to almost BVR (Beyond Visual Range) conditions with no loss of signal.

  • Member #4 / about 18 years ago / 2

    We've used these antennas to significantly extend the range of our bluetooth devices.

  • Does anyone know if I can use this antenna with this interface cable (https://www.sparkfun.com/products/662) to connect to an Arduino Yun?

  • Aristarco / about 11 years ago / 1

    Does anyone know if this antenna could be used for GSM cellular applications? Greetings.

    • CrazySwedishGuy / about 10 years ago / 1

      I'm not an expert, but I think antennas are typically optimized for specific frequencies. This one is tailored for 2.4GHz, which would work well with wifi and bluetooth applications. GSM operates on a different frequency. You'd likely be better off with the quad-band cellular antenna: https://www.sparkfun.com/products/8347.

  • Member #250209 / about 13 years ago / 1

    can i use this antenna with rfid 20?? i'm trying to build up some more range in this device... can someone tell me otherwise what can i do to make it?? thanks

    • coonce / about 11 years ago / 1

      Did anybody ever follow up with you regarding this question? I was wondering the same thing.

      • M-Short / about 11 years ago / 1

        Nope, the ID20 runs at 125KHz not 2.4GHz, you would need to find a 125kHz antenna, also I believe the ID12 and the ID20 already have built in antennas, meaning to add an antenna you would want the ID2/ID3.

  • Gyrfalcon / about 13 years ago / 1

    To estimate the effective radiated power (ERP) multiply the output of your radio by 2.1 This estimate does not take into account losses in the system from the cable, connector, or environment.

Customer Reviews

4.5 out of 5

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Great product

Does exactly what it should.

Is doing exactly what I had hoped for.Excellent value. Fast shipment.Would do business again.