High-gain refers to a system or device that amplifies a signal significantly, making it much stronger than the original input. This concept is commonly used in electronics, particularly in amplifiers, where a small electrical signal is boosted to a level suitable for processing or transmission. High-gain systems are essential in various applications, including radio communications and audio equipment. In the context of antennas, high-gain antennas focus energy in a specific direction, increasing the signal strength over long distances. This is particularly useful in wireless networks and satellite communications, where a strong, clear signal is crucial for effective data transmission. High-gain technology enhances performance and reliability in many fields.