Active Power Divider, commonly abbreviated as APD, is a power divider equipped with internal signal amplification capabilities. It effectively compensates for line losses, enhances system signal-to-noise ratio, and extends transmission distance, offering significant advantages in distributing weaker signals. The APD has a wide range of applications, including two-way radios, satellite positioning systems, 2.4GHz, and 4G LTE systems, and boasts features such as wide bandwidth, high isolation, low noise, and stable performance.