24GHz Microwave Radar Sensor

A K-band 24GHz millimetre-wave ranging radar sensor with isolated transmitter and receiver antennas. Using FMCW modulation, it measures distance to object surfaces by transmitting and receiving microwaves, with all signal processing integrated on-board. Distance data is output directly via an asynchronous serial interface (ASI) at 3.3V TTL logic level.

Compared with optical and ultrasonic range sensors, this microwave radar offers a wider detection range and reliable performance in harsh conditions — it can penetrate most non-metallic materials, dust, smoke, and fog. The sensor also supports multi-target distance detection and custom working modes for processing distance spectral information.

Key Features

• 24GHz FMCW Radar – Millimetre-wave ranging with 0.5–20m detection distance
• High Resolution – 0.01m range resolution with ±0.1m accuracy
• Multi-Target Detection – Detect distances to multiple objects simultaneously
• All-Weather Operation – Penetrates dust, smoke, fog, and non-metallic materials
• Serial Interface – ASI communication at 57,600 bps, 3.3V TTL logic
• Compact & Lightweight – Just 34 × 44 × 5mm and 8g
• 10Hz Update Rate – Fast, responsive distance measurements

Specifications

• Input Voltage: 4–8V DC
• Logic Level: 3.3V TTL
• Input Current: >100mA
• Power Consumption: 400mW
• Transmit Power: 0–10dBm
• Modulation: FMCW
• Detection Distance: 0.5–20m
• Range Resolution: 0.01m
• Accuracy: ±0.1m
• H-Plane Beamwidth: 78° (-3dB)
• V-Plane Beamwidth: 23° (-3dB)
• Data Update Speed: 10Hz
• Working Temperature: 0–70°C
• Storage Temperature: -40–85°C
• Dimensions: 34 × 44 × 5mm
• Weight: 8g

Ideal For

• Car reverse backup radar systems
• Automatic door openers
• UAV obstacle avoidance
• Passenger flow detection
• Collision prevention devices

Package Contents

• 1× 24GHz Microwave Radar Sensor (SEN0306)

Resources

• DFRobot Product Wiki