Amateur Extra › E9 Antennas and Transmission Lines › E9F09
E9F09
What impedance does a 1/4-wavelength transmission line present to an RF generator when the line is shorted at the far end?
Pick an answer to check it.
Answer: A. Very high impedance
A quarter-wave line inverts the load impedance. A short at the far end appears as a very high impedance at the input.
Tip: Quarter wave flips short to open.