A type of microwave circulator with three ports, typically arranged in a "T" configuration. It allows microwave signals to flow in one direction through the device, redirecting signals from one port to the next in a circular path while preventing reverse signal flow. The T Circulator is commonly used in RF and microwave systems for signal isolation, power splitting, and routing in applications like radar systems, communication networks, and test setups. Its primary function is to protect sensitive equipment by isolating signals from undesired reflections and maintaining unidirectional signal flow.