Application Note
page 6 of 32
V1.0
2021-03-31
Distance2GoL (Software-Controlled FMCW) low-power radar shield using
BGT24LTR11 for range detection and human tracking
Introduction
1.2
Key features
The primary features of the Distance2GoL radar system are as follows:
•
Detects distance of a human in a user-configurable range (1 to 15 m)
•
Detects distance and velocity of the closest human or moving target
•
Low power consumption
•
Two-board topology for RF section and microcontroller sections
•
Two customizable analog amplifier stages for the RX channel
•
Micro-strip patch antennas with 10 dBi gain and 29 x 80 degree Field of View (FoV)
•
Multiple power supply possibilities
–
micro-USB, external power supply or LiPo battery
•
Compatible with Arduino for ease of use and prototyping
•
Operates in different weather conditions, including rain, fog, etc.
•
Can be hidden in the end application as it detects through non-metallic materials
Note:
The platform serves as a demonstrator platform with the software to perform simple motion sensing. The
test data in this document show typical performance of Infineon-produced platforms. However, board
performance may vary depending on the PCB manufacturer and specific design rules imposed and
components used.
1.3
Overview
The platform is a stack-up of two boards
–
BGT24LTR11 Shield (radar front end) and radar baseboard XMC4700
(for signal processing).
The Distance2GoL radar system consists of the following key components:
•
BGT24LTR11
–
highly integrated 24 GHz transceiver IC with one transmitter (TX) and one receiver (RX)
•
XMC4700
–
32-bit ARM® Cortex®-M4 based microcontroller for signal processing
•
IRLHS2242
–
20 V single P-channelMOSFETs for duty-cycle operation
•
MCP73831T
–
battery manager for charging and using the battery
•
CW1280T
–
EEPROM to store board identifier information
•
MOLEX 047571001
–
SD card reader for storing raw data
•
XMC4200
–
32-bit ARM® Cortex®-M4 based microcontroller for debugging
