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1. Overview of the A121 Evaluation Kit
1.1 Introduction
The A121 Evaluation Kit (The EVK) is a development platform featuring Acconeer's latest radar
sensor, the A121. This is a low-power, high-precision 60 GHz radar in one package solution with
integrated baseband, RF front-end and antenna. It is pin compatible with its predecessor, A111, but
comes with improved power consumption and signal to noise ratio.
The A121 is based on pulsed coherent radar technology (PCR). It has leading-edge patented sensor
technology with pico-second time resolution. It is possible to realize use cases requiring ranges up to
20m and it supports mm accuracy on absolute distances and sub-mm accuracy on relative distances.
The A121 EVK consists of three boards that can be connected in different combinations:
XC120 ("Connector Board")
XE121 ("Evaluation Board")
XS121 ("Satellite Board")
The XC120 board carries a cortex M7 MCU which is to be flashed with a software dedicated to stream
data from the A121 radar sensor to Acconeer's "Exploration Tool" via USB HS 2.0. The XC120 is
intended to be used with the exploration server for streaming radar sensor data only and after flashing,
no further configuration by the user is expected.
The XE121 features an on board A121 pulsed coherent radar sensor and the possibility to add up to
four additional A121 radar sensors via FFC (Flat Flexible Cable) to the XS121 radar satellite boards.
The XE121 can't be used stand-alone since it isn't equipped with an MCU. It is designed to be
compatible with the XC120, Raspberry Pi and STM Nucleo-64 or Nucleo-144 development boards.
The most straight-forward and optimized way to evaluate the A121 radar sensor is to connect the
XE121 to the XC120 Connector board which enables evaluation of the radar sensor using the
Acconeer "Exploration Tool"
1
Available for download on github:
Proprietary and Confidential
© 2022 by Acconeer – All rights reserved
1
. Connecting the XE121 to the XC120 gives you the highest data
https://github.com/acconeer/acconeer-python-exploration
A121 EVK – User Guide
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2022-07-07
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