Directivity refers to the measure of how focused the energy output of a source is in a particular direction, often used in fields like acoustics, antenna design, and seismology. It is crucial for optimizing performance and efficiency by concentrating energy where it is most needed, reducing waste and interference.
Gain refers to the increase or improvement in value, quantity, or quality, often within a specific context such as finance, physics, or technology. Understanding gain involves analyzing how inputs are transformed into outputs and the efficiency or effectiveness of this transformation process.
Phased array antennas are advanced antenna systems that use an array of individual antennas to steer the beam of radio waves in a desired direction without physically moving the antenna. They are crucial in applications requiring rapid beam steering and high precision, such as radar systems, satellite communications, and 5G networks.
Beam width refers to the angular width of a beam of radiation or particles, typically measured at the points where the intensity drops to half its maximum value. It is a crucial parameter in fields like antenna design, optics, and acoustics, affecting resolution, coverage, and signal strength.