Make Your Own 2.4 GHz Circular Polarized Clover Leaf Antenna

by andrew mcneil

15K265

Intro: Make Your Own 2.4 GHz Circular Polarized Clover Leaf Antenna

Make your own 2.4 GHz Circular Polarized Clover Leaf antenna.
This is a 2.4 GHz circularly polarized omnidirectional antenna.

5 Comments

ejafman 10 years ago

Thanks very much for your detailed instructions regarding these wifi antennas.Very very helpful.

I have one question, which I have been unable to find an answer for. I would like to attach one of these designs to the swivel mount of my existing antennas. When I open them up, I see a sheathed cable going from the SMA connector, to a metal can (I believe that is a length of 1/2 wave), and then protruding out of the top foranother 1/2 wave. At exactly what point would I attach this antenna to, in order to not compromise its performance? I understand the exactness of the lengths, and am somewhat confused as to whether I need to add a "decoupler" or not.

Any information in regards to this would be greatly appreciated.

Thanks...Eric

ojsefg 10 years ago

Your tutorial just solved years worth of tx and rx problems. Cheers.

rimar2000 11 years ago

Nice design, it seems a boat's propeller.

What is its advantage over a standard one? Pardon, maybe you said it on the video, but I don't understand spoken English.

andrew mcneil 11 years ago

The advantage over a stranded rubber duck antenna is its circular polarization. A rubber duck (dipole) is vertically polarized. A vertically polarized signal will flip every time it hits a reflective surface. When it does this it will lose up to 1db of gain. A circular polarized signal does not flip, so does not suffer from this loss.
Hope this helps

rimar2000 11 years ago

OK, thanks for your explanation.

I don't know if I understood: Is it to say that the waves go upward? Could be fixed this using a 45° mirror above of the antenna?