An antenna array is a group of multiple antennas working together to transmit or receive radio waves. By combining the signals from these antennas, the array can enhance the overall performance, such as increasing the range or improving the clarity of the signal. This technology is commonly used in various applications, including cellular networks, satellite communications, and radar systems. The arrangement and spacing of the antennas in an array can be adjusted to control the direction and strength of the emitted signals. This allows for better coverage and reduced interference from unwanted sources. Antenna arrays are essential in modern communication systems, enabling efficient data transmission and reception.