Helix1

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A 1.5 GHz, 4 turn, center fed helix of length 14.1 cm and diameter 7.4 cm. The helix is represented by 60 point radiators. The peak element current is 1 A. Total power radiated is 568.7 W .

The current at a point (30) at the center feed is .192A in x direction, .896 A in y direction, .139A in z direction. The Poynting vector in the ZX and YZ planes is shown in blue.

The circularly polarized electromagnetic field at the target at range 50 cm is shown. The Poynting vector is 330 W/m^2. The distribution of current along the 4 turn element is shown. Peak current = 1 A occurs at 10 points.

The circularly polarized field at the target is shown graphically in dA.