G9A07 : What must be done to prevent standing waves on a feed line connected to an antenna?
A
The antenna feed point must be at DC ground potential
B
The feed line must be an odd number of electrical quarter wavelengths long
C
The feed line must be an even number of physical half wavelengths long
D
The antenna feed point impedance must be matched to the characteristic impedance of the feed line
Correct Answer: The antenna feed point impedance must be matched to the characteristic impedance of the feed line