Amateur Extra › E9 Antennas and Transmission Lines › E9B02
E9B02
What is the front-to-back ratio of the antenna radiation pattern shown in Figure E9-1?
Pick an answer to check it.
Answer: D. 18 dB
Front-to-back ratio compares the main lobe to the signal directly behind the antenna. In Figure E9-1 the rear lobe is about 18 dB below the front.
Tip: Front vs. directly behind.