❓ What is an RF circulator and how does it work?

An RF circulator is a passive, non-reciprocal three-port device that controls the direction of signal flow in RF systems. The signal entering one port is routed to the next port in a fixed rotational direction (e.g., Port 1 → Port 2 → Port 3).

This unique behavior is achieved using ferrite materials under a magnetic bias, enabling efficient signal routing while minimizing reflection and interference.