Antennas and Circular Polarization

by franck | May 21, 2012 | (16) Posted in Tips

A simple "controlled experiment" to compare simple linear polarized antennas and circular polarized antennas.

Everyone agrees that circular polarization is a big improvement for our video links and there are already tons of evidence to show it. I just wanted to see for myself what difference it makes when putting videos side by side.

The experiment was made by successively using the different antennas and flying a few minutes. The results are quite clear and show what you can expect when changing the stock antennas for circular polarized antennas.

The circular polarized antennas I am using are a Cloverleaf antenna on the TX and a Skew-Planar Wheel antenna on the RX. I built these antenna myself without any specific equipment to tune them (so they are probably far from optimal).

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COMMENTS

L33n0x on May 22, 2012
Oh ! Really really cool example ! The best one ! Have you tried with a inverted-vee too ?
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franck on May 22, 2012
No, I have not tried other antennas (yet). I plan to build a helical antenna at some point. I could compare the combination helical+cloverleaf to patch+inverted V to see what difference it makes. Good idea!
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jdgomezb on May 23, 2012
Thank you, very simple and practical experiment you did there!
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ycopter on May 22, 2012
Great to see side by side comparisons, really illustrates the benefits.
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House Of Noob on June 6, 2012
Really drives the point home.

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Toby on May 21, 2012
Really informative!
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DonSaleh on May 21, 2012
love the video, thanks for sharing !
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Bollie on May 21, 2012
That was really cool to see them side by side - thanks
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franck

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Antennas and Circular Polarization