Question about EnGenius EOC-3220 (EOC3220)

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How to make my own wifi antenna splitter?

I just want to learn how to make my own wifi antenna splitter by two ways. Anyone knows? Please help me..Thanks in advance.

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Re: How to make my own wifi antenna splitter?


If you are planning to use a single antenna and then use a "splitter" to connect two (2) WiFi units, I'm afraid that it will not work.

Antenna splitters are meant for receive only mode but since WiFi operates both on receive and transmit, then perhaps what you would need is a "duplexer".

Both of your WiFis would be operating on 2.4GHz band.  Theoretically, you would have to fix set your first WiFi device to operate on the lowest channel possible and the other on the highest channel possible. The channel separation translates to frequency difference; lowest for Channel 1 is 2.401GHz while the highest for Channel 11 is 2.473GHz.

Constructing your own would be at best a daunting task since you would need to be very familiar with electronic components and circuitry in the microwave region. Further, you have to have access to specialized equipment (microwave capable) such as a spectrum analyzer, swr meter, dummy loaded wattmeter and a frequency counter to say the least.  In most countries, you would also need certain licenses to do this.

With all of these in mind, your best bet might be to use individual external antennas for each WiFi device and positioned them as far away as possible from each other.  Moreover, pls bear in mind that anything between the transmitter and the antenna would introduce attenuation, insertion and return loss and this include even just the cable.


If you would still want to give it a try:

  1. Here is a   link  to  commercial duplexer for  amateur radio;
  2. Here’s a   link  to  a do-it-yourself page for lower amateur frequencies;
  3. This is a   link   to a component supplier page.

Good luck and kind regards.

Posted on Oct 24, 2007

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To answer your question, from a single TX/RX device (your WiFi unit) to a dual antenna, what you would need as a splitter is more commonly called a "phasing harness".

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