Phased array antennas are advanced devices that consist of multiple small antennas, or elements, arranged in a specific pattern. These antennas can electronically steer their beam direction without moving physically, allowing for quick adjustments in signal transmission and reception. This technology is widely used in applications like radar, telecommunications, and satellite communications. The key advantage of phased array antennas is their ability to focus signals in different directions, improving performance and efficiency. By changing the phase of the signals emitted from each element, the antenna can create a directed beam, enhancing coverage and reducing interference. This makes them ideal for modern communication systems, including 5G networks and military radar systems.