🔍 Key Concepts

• Ferrite circulator basic function in RF/microwave systems • How a marine RADAR transmitter and receiver share one antenna • Role of the duplexer in protecting the receiver from the high-power pulse

💭 Think About

• Where in the radar chain do we need to route high-power pulses one way and weak echo signals another way? • Which component is responsible for switching or separating transmit and receive paths while using a single antenna? • Does a circulator normally deal with power distribution, timing control, or signal amplification/detection?

✅ Before You Answer

• Identify which radar unit handles transmit/receive isolation with a single antenna • Recall that a ferrite circulator passes energy in one direction around its ports (port 1 → 2 → 3) • Eliminate options that mainly handle timing (pulse formation) or signal amplification/detection, not RF path routing