Im
L
λ
r
z
θ
Eθ
HΦ
Pd

Formula

Current (I) = Im Sin (β(L - |z|) )
Electric Wave (Eθ) = (60 * Im / r) * [(Cos (βL Cos&theta) - Cos(βL) ) / Sinθ
Magnetic Wave (Hφ) = (Im / 2 πr ) *[ ( Cos (βL Cos&theta) - Cos(βL) ) / Sinθ ]
Average radiated power density (Pd) = (15* Im2 / πr2) ×[ ( Cos (βL Cos&theta) - Cos(βL) ) / Sinθ ] 2

Where,
β = 2π / λ
λ = Wave Length
Im = Magnetic Current
L = Half Antenna Length
r = radius
θ = Angle