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KE4UVQ

Flat Ground Plane Antenna

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I built this 2.4 ghz 3mm driven element GP and I understand there is an effect of the ground radials on a typical GP being at different angles affecting the performance of the antenna and its pattern, this is more like a quarter wave on a car surface. (flat)

Underneath is an SMA female to be connected via RG174 to the transmitter.

I guess my question for you guys is how well would this perform over the stock dipole attached to the transmitter? It would be mounted externally underneath the plane to the rear of the landing gear along the tail moment.

Thanks in advance,

post-2-1074827589_thumb.jpg

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I think you will be happier with a ground plane antenna (yours is a simple 1/4 wave vertical whip). A GP has ground elements composed of resonant radials, which will be a bit more efficient. And the impedance matching will be a little bit better.

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I think if you are able to trim it to a good match using a reflectometer then it may work good at high angles, but I would guess a dipole would be better for low angles as you would get at long range.

Terry

UK

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Never mind fellas, I put the stock dipole outside the fuse and Im getting

5000+ feet with little dropout. Forget the other antenna!!! :D

Edited by KE4UVQ

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