An RF (Radio Frequency) splitter is a passive device used in RF and microwave systems to divide an incoming signal into multiple output signals. It typically consists of a single input port and two or more output ports, with each output port carrying a fraction of the original signal power. RF splitters are commonly employed in various applications, including telecommunications, cable TV distribution, and RF testing. They allow a single RF signal source to be distributed to multiple destinations, making them useful for applications such as sharing a signal among multiple antennas or connecting multiple devices to a single RF source. RF splitters come in different configurations, such as power dividers and directional couplers, each serving specific purposes in signal distribution within RF networks.