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).

COMMENTS

Bollie on May 21, 2012
That was really cool to see them side by side - thanks
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jdgomezb on May 23, 2012
Thank you, very simple and practical experiment you did there!
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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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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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ycopter on May 22, 2012
Great to see side by side comparisons, really illustrates the benefits.
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Antennas and Circular Polarization