What does a high directivity antenna achieve in terms of power distribution?

A high directivity antenna is designed to focus energy in a specific direction, which leads to a more concentrated beam of radio waves. This characteristic enhances the overall effective range and performance of the antenna in that direction. When the power is directed more narrowly, that means more energy is being transmitted compared to a lower directivity antenna that radiates power over a wider area.

This focused beam is beneficial for applications such as point-to-point communication, where it is crucial to maximize the signal strength in the direction of the receiver. The increased concentration of the radiated power in a specific direction improves the signal quality and reduces interference from other sources. Hence, the correct answer highlights the essence of how high directivity antennas work to achieve their purpose in communication systems.