A phased array is a type of antenna system that uses multiple individual antennas, or elements, to transmit and receive signals. By adjusting the phase of the signal at each element, the array can steer the direction of the beam without moving the antennas physically. This technology is commonly used in radar systems, telecommunications, and medical imaging. In medical applications, such as ultrasound, phased array transducers allow for the creation of detailed images of internal organs. The ability to control the direction of the sound waves enhances the quality of the images and enables real-time monitoring, making it a valuable tool in diagnostics and treatment planning.