Antenna – DIY

Naturally you can buy inexpensive antennas like the Cantenna WIFI antenna shown at the right.
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But, you can….

Just Build Your Own

For those with just a bit of technical skills or just the confidence to experiment a bit, it’s not hard to build antennas for common applications including WIFI, Cellular, and TV.

Some Things to Consider…

Convert a Dish

We like the following ideas, because the result is recycling an old dish into a higher powered modern antenna. Check these:

    

DIY How To Links

Now let’s get down to business and see exactly how to build some antennas.

The links below are carefully selected based on the apparent design and instruction value as well as the final ‘proclaimed’ resulting dbm. When time permits direct testing, direct interviews, or testing from experts in any case. We will add that information here, or likewise remove anything found to be incorrect.

Finally, we hope you will help, if you have a something better, we want to hear about it. If you find a problem with a designed we link to, we want to know about it. Here goes…

Cellular Antennas

HDTV Antennas

WIFI Extenders (Broadcast or Reception)

Important Notes

  • HDTV Questions Answered
  • WiFi Antennas – Dishes, Slot, Yagis Compared
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  • Be aware that OTA (Over-the-air) signals can be influenced by a number of things to include obstacles, terrain, weather, time of day and year, antenna height and aim, quality of build, etc. and you will have to figure out the best setup for your antenna system.
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  • A search on www.tvfool.com can be nice to find information on station locations, power levels, etc. It will be necessary for you to aim the antenna towards the best, or desired, signals you wish to receive.
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  • Impedence matching is an important part of the design. The whole of the transmission line, including the antenna requires impedence matching. Remember also that when building home brew designs like these dimensions will differ from the blueprint.  Using RF decouplers, high frequency diodes and an oscilloscope… it is possible to measure the SWR.
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  • A good match between your antenna and transmission line will result in a low reflected wave. If the reflection is high compared with the forward wave you have a bad match, poor performance will result and the dimensions of the antenna must be altered.

Some DIY WIFI and Cellular Antennas

    

      

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