In antenna diversity, what is the purpose of sampling two antennas?

• A. To increase data rate
• B. To pick the input signal of whichever antenna has the best reception
• C. To reduce power consumption
• D. To improve security

Answer: (B)

Antenna diversity is about keeping a reliable link in environments where signal quality can vary because of fading. By sampling two antennas, the receiver can compare the quality of the signal from each path and use the one that has the best reception for decoding. This choice reduces the chance that a weak or distorted signal from one path ruins the communication, improving reliability.

This doesn’t inherently increase the data rate, and it isn’t aimed at reducing power or boosting security. Those effects aren’t the primary goal of sampling multiple antennas; the main purpose is to select the input with the strongest, clearest signal to maintain a stable link.