Radiation resistance. An antenna is connected to the source with a 50 Ω transmission line. The antenna radiates in free space.
Calculate the standing wave ratio on the transmission line if:
(a) The antenna is a half-wavelength dipole with zero internal resistance.
(b) The antenna is a half-wavelength dipole with internal resistance of 1.2Ω.
(c) The antenna is λ/50 long and has no internal resistance.