Acconeer – A121


The radar sensor is based on pulsed coherent radar technology and combines extremely low power consumption with high accuracy. The unique characteristics of this radar sensor make it possible to identify materials and detect motion in advanced sensor applications. The small size, only 5×5 mm, and low power consumption are ideal for compact battery-driven and mobile devices. In mid 2022, Acconeer broke the milestone of more than 1 million shipped sensors to over 60 countries.




The A121 is a radar system based on pulsed coherent radar (PCR) technology and is setting a new benchmark for power consumption and distance accuracy – fully integrated in a small package of 29 mm2.



The A121 60 GHz radar system is optimized for high precision and ultra-low power, delivered as a one package solution with integrated Baseband, RF front-end, and antenna. This will enable easy integration into any portable battery driven


The A121 is based on leading-edge patented pulsed coherent radar technology with picosecond time resolution. The sensor can measure up to 20 meters and the actual measurable distance is dependent on object size, shape, and dielectric properties.
The A121 60 GHz radar remains uncompromised by any natural source of interference, such as noise, dust, color and direct or indirect light.




  • High precision distance measurements with mm accuracy and high update rate
  • Proximity detection with high accuracy and the possibility to define multiple proximity zones
  • Motion detection and velocity measurement
  • Material detection and classification
  • High precision object tracking, enabling robot navigation
  • Gesture control
  • Monitoring of vital life signs such as breathing and pulse rate




Accurate distance ranging and movements

  • Measures absolute range up to 20m (absolute accuracy in mm, relative accuracy in µm)
  • Possible to recognize movement and gestures for several objects
  • Support continuous and single sweep mode
  • HPBW typical of 65 (H-plane) and 53 degrees (E-plane)


 Easy integration

  • 60 GHz Pulsed Coherent Radar (PCR)
  • Integrated Baseband, RF front-end, and Antenna in Package
  • 5.5 x 5.2 x 0.88 mm fcCSP, 0.5 mm pitch
  • Can be integrated behind plastic or glass without any need for a physical aperture
  • Single reflowable component
  • 1.8 V single power supply, enable with Power on Reset (PoR)
  • 1.8 V or 3.3 V IO interface power supply
  • Clock input for crystal 24MHz
  • SPI interface for data transfer, up to 50 MHz SPI clock support
  • INTERRUPT support


A121 Evaluation Kit

The XE125 Module Evaluation Kit includes hardware and software to start developing with the A121 Radar Sensor.


  • USB-C connector to connect the EVK to a PC
  • Range: up to 20 meters
  • Windows & Linux support


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