A horizontal antenna of length L =100 m, which is distance h = λ/2 from the ground, carries
current I(t) = I0 sin(ωt), where I0 = 10A and ω = 2π105

rad/s. A) Check if it is short or long
antenna and write down the corresponding solutions for electric E~ and magnetic H~ fields large
distance r from the antenna (choose coordinate axes so that Z axis is along the antenna and the
X axis is vertical); B) Calculate the amplitude of the magnetic field r = 10 km away from the
antenna in the ZX plane at the polar angle of θ = π/6 with respect to the Z-axis above the ground;
C) Sketch the radiation patterns in the ZX and XY planes.