Active antennas are a type of antenna that require power to function. They are designed to amplify weak signals, improving reception quality. These antennas are commonly used in areas with poor signal strength or in situations where a longer cable run is required. Active antennas typically have a built-in amplifier and require a power source, such as a power adapter or batteries. Antenna splitters, on the other hand, are devices used to split the signal from a single antenna to multiple devices. They are commonly used in situations where multiple TVs or receivers need to be connected to a single antenna. Antenna splitters come in various configurations, such as 2-way, 4-way, or even higher, depending on the number of devices that need to be connected.