HB100 Microwave Doppler Radar Sensor Module – X-Band Wireless Motion Detector Probe (Industrial Grade)

Description

The HB100 is an X-band bi-static Doppler transceiver module designed for non-contact motion detection and speed measurement. It consists of a Dielectric Resonator Oscillator (DRO), a single balanced mixer, and a pair of microstrip patch antenna arrays, all mounted on a compact 46.5 × 40 × 8.7mm PCB weighing only 8 grams .

The module operates at 10.525 GHz and transmits a low-power microwave signal (20 dBm EIRP typical). When the reflected signal from a moving object is received, the frequency shift (Doppler effect) produces an IF output whose frequency is proportional to the object’s radial velocity—approximately 72 Hz per m/s of movement . This makes the HB100 suitable for motion detection, vehicle speed measurement, and automatic door/lighting control.

Unlike PIR sensors, the HB100 is not affected by temperature, humidity, dust, light, or airflow, making it suitable for harsh environments. It can detect movement through non-metallic materials (plastic, glass) with some attenuation, and can detect objects at ranges exceeding 20 meters depending on target size and reflectivity .

Critical limitations: The IF output is very weak (approximately 5mV for a walking person at 1m distance) and requires external amplification before a microcontroller can read it . The module is ESD-sensitive—use a grounded soldering iron and handle with care . The “Industrial Grade” claim is not supported by the standard datasheet’s -15°C to +55°C operating range .

Features

• X-Band Doppler Radar: 10.525 GHz operation for motion detection and speed measurement .

• Low Power Consumption: 30mA typical in CW mode; 2mA average in pulse mode .

• Flat Profile: Compact 46.5 × 40 × 8.7mm PCB, 8g weight .

• CW or Pulse Operation: Supports continuous wave or pulsed power schemes for power-sensitive applications .

• Not Affected by Environmental Factors: Immune to temperature, humidity, dust, light, and airflow .

• Non-Contact Detection: Can detect movement through non-metallic materials .

• Analog IF Output: Frequency proportional to target velocity; amplitude proportional to target size and distance .

• ESD-Sensitive: Requires careful handling during soldering and installation .

Technical Specifications