What are RADAR Sensors?
A RADAR sensor is a sensor used to detect an object's distance, direction, speed, angle, presence, and movement, up to a specified distance range. The radar sensor usually consists of transmitter & receiver circuits with integrated antenna, signal processing circuits, and other supporting circuits. The transmitter sends out radio waves and strikes the object in their path and returns back (echo signal) to the receiver. The signal processing circuit processes the received signal to determine the object's distance, direction, speed, etc.
Radar sensors use detection methods such as frequency modulated continuous wave (FMCW), Doppler effect, continuous wave (CW), and FSK-CW (frequency shift keying-continuous wave). These sensors are ideal for use in the front-end for gesture sensing, high-resolution FMCW radar, short-range sensing operations, 3D position detection, 3D presence/absence detection, autonomous activation, drone collision avoidance, robotic control, etc.
Key Specifications for Radar Sensors:
- Detection Methods: These are the detection methods involved in the radar sensor. They may use Doppler/CW/FMCW/FSK-CW.
- Operating Frequency: It is the range of frequency of operation of the radar sensor.
- Number of Tx/Rx channels: These are the number of transmitter/receiver channels available in the sensor. They can range from 1, 2, 3, 4 channels or more.
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