Lecture
This lecture covers the principles of linear antennas, including uniform linear antennas and phased linear antennas. It explores the application of antenna arrays in acoustics to control directivity, with examples like line array sound systems and microphone arrays. The lecture delves into the theory behind linear antennas, discussing the radiation pattern, directivity, and polar representations. Specific cases such as symmetric antennas and Uniform Linear Antennas are examined, along with their directivity diagrams and properties. The concept of directivity factor and radiation width are also explained in the context of antenna arrays.