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calc_12a.php   7855 Bytes    15-08-2016 16:51:50


Sophisticated Helix Antenna Design


... with matching Coax to 50 Ω


Helix schematics


Freq. [MHz]

Turns n

   

λ [mm]

   Wavelength

Gain [dB]

   approx.

l1 [mm]

   Length of matching Coax (λ/4)

d1 [mm]

   Diameter of matching Coax

d4 [mm]

   

l2 [mm]

   Length of Helix

d2 [mm]

   Helix Diameter

d3 [mm]

   Disc Diameter

   

 







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t1 = 3876 d

t2 = 622 ms

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