SeeedStudio Grove Doppler Radar (BGT24LTR11)

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Working Principle

Description

The Grove – Doppler Radar utilizes the BGT24LTR11 Silicon Germanium MMIC, a 24GHz radar transceiver, to detect motion, measure distance, velocity, and angle of objects. It operates by emitting electromagnetic waves and analyzing the frequency shift of the reflected waves from moving objects, a principle known as the Doppler effect.

Sensor Types

Doppler Radar Sensor

Dos And Donts

Donts

  • Expose Directly To Harsh Elements: Although the sensor can operate in harsh weather conditions, it is designed to be deployed behind objects, not directly exposed.,
  • Exceed Voltage Limits: Do not supply voltage higher than 5.5V to avoid damaging the device.

Dos

  • Ensure Proper Power Supply: Provide a stable 3.3-5V power supply to ensure optimal performance.,
  • Use In Appropriate Environments: Deploy the sensor in environments where its high penetration capabilities and resistance to harsh weather can be fully utilized.,
  • Utilize Esd Protection: Take advantage of the built-in ESD protection to prevent system failures during electrical disturbances.
Limits

Operating Temperature

  • Standard: 25°C

Transmission Frequency

  • Minimum: 24GHz,
  • Typical: 21.125GHz,
  • Maximum: 24.25GHz

Voltage

  • Minimum: 3.3V,
  • Maximum: 5.5V
How To Connect

Communication

  • Uart: Use UART communication at 115200 baud rate for interfacing with microcontrollers or computers.

Power Connection

  • Vcc 5v Ext: Connect to a 5V power supply ensuring not to exceed 5.5V.

Signal Outputs

  • Div Out: Connect to observe frequency divider output.,
  • Ifi Hg And Ifq Hg: Connect these I and Q channel outputs for detailed signal analysis.
Dimensions

Size

12 × 9 × 1 cm

Weight

0.01 kg