helix antenna with second helix-reflector

[devton 27]

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) ?

Edited March 1, 2017 by devton
words

[Admin 2545]

from where you picked it...!!!!

[devton 27]

from head

[Admin 2545]

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

[devton 27]

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

[devton 27]

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

on long helix it may be stripe

[Admin 2545]

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

[devton 27]

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 March 1, 2017 by devton

[Admin 2545]

,,,like this....??

 

[devton 27]

show from different angle

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

[devton 27]

40 minutes ago, Admin said:

,,,like this....??

 

yes it is

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

[Admin 2545]

[devton 27]

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

[Admin 2545]

11dBi-3,5 turns

[devton 27]

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?