A dipole with a finite length of is located in free space, as sketched in
figure. The dipole is operated at and radiates the power .
The current amplitude is
1. Calculate the input
resistance Rin
Rin=200Ω
Rin=578.89Ω
Rin=150Ω
Rin=578.50Ω
2. Calculate the maximal
directivity D0 and the gain G in dBi (dB over isotropic)if the loss
resistance is RL=1.77Ω