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devton

helix antenna with second helix-reflector

Second helix not connected to reflector and may work just as passive reflector!

It may be not seen on picture, but it should be behind main helix (between main helix and reflector) in 0.25 wavelength from main helix.

Main thing here - just same helixes AND round wire in helix (not stripe).

 

Maybe you can simulate it with small amount of helix turn (3-4-5) ?

helix6a.jpg

Edited by devton
words

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And if the second helix is made from strip ...?

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i think from same round wire as main to let traditional big reflector work as it should

it will work as in yagi antennas where reflector it is just same wire

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let say so: on short helix antenna it's better be same round wire for reflector-helix

on long helix it may be stripe

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aaa...ok,,, and the second helix it is in the air...!!1

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yes in air i think....if connect second helix to reflector near place where first connected, it wiill be odd omnidirestional antenna with a lot of OHMs and asymmetrical diagram

Edited by devton

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show from different angle

looks like IT but i can not understand how it looks in 3d

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40 minutes ago, Admin said:

,,,like this....??

screenshot_3684.jpg

 

screenshot_3685.jpg

yes it is

maybe it took few tryes by moving it on X axis before it work well...

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16 minutes ago, Admin said:

11dBi-3,5 turns

is it 15cm diametr round plate-reflector? 

single 5 turn helix should be 10 dbi too 0_o?

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