AirTouch AT58L4M32-2020 (Highbay Version) 5.8 GHz Radar Sensor Module For Evaluating AT5820AT5820AirTouch AT58L4M32-2020 (Highbay Version) 5.8 GHz Radar Sensor Module For Evaluating AT5820

AirTouch’s AT5820 is a microwave radar sensor SoC that operates at 5.8 GHz with a -5 dBm output. This integrated microwave transceiver offers intermediate frequency (IF) signal processing and filtering and contains an on-chip adaptive calibration algorithm that manages co-frequency interference problems. This algorithm also provides out-of-band blocking to eliminate environmental interference.

The AT5820 integrates a 32-bit MCU with 10+ GPIOs for controlling radar operation and running the application. The AT5820 features UART/I2C communication interfaces and output via GPIO and PWM. This device comes in a 4 x 4 mm QFN32 package, and a flexible supply voltage of 3.3 V or 5 V further enables simplification of board designs. This makes the AT5820 SoC an effective basis for compact motion sensors in smart lighting, smart security, and smart home applications.

The AT58L4M32-2020 (Highbay Version) is a low-power 5.8 GHz radar sensor module built to demonstrate a longer-range use case for the AT5820: it can detect people at a distance of up to 30 m when mounted 2 m high and with an unobstructed view. A miniature plane antenna ensures the best performance from the sensor while greatly reducing the overall size of the module – this reference design has a footprint of just 20 x 20 mm. This sensor module is designed for smart outdoor lighting applications, but it can be also used to evaluate AirTouch’s 5.8 GHz radar capabilities for other markets, as the AT5820’s hold time and sensing range are adjustable.

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