RF drop in circulator is a type of RF device that enables unidirectional transmission of electromagnetic waves, mainly used in radar and microwave multi-channel communication systems. The drop in isolator is connected to the instrument equipment through a ribbon circuit.
The RF drop in circulator belongs to a 3-port microwave device used to control the direction and transmission of signals in RF circuits. The RF drop in circulator is unidirectional, allowing energy to be transmitted clockwise from each port to the next port. These RF circulators have an isolation degree of about 20dB.