Question

A half wave dipole antenna is operating at a frequency of 50MHz is connected to the transmission line with a characteristic impedance of $75\Omega$, then the standing wave ratio is

Answer 1

$Z_A=73+j42.5\Omega$

$\Gamma =\frac{Z_A-Z_0}{Z_A+Z_0}$

$\Gamma =0.2763\angle 76.6$

$s=\frac{1+\left|\Gamma \right|}{1-\left|\Gamma \right|}=\frac{1+0.2763}{1-0.2763}=1.763$