Infineon XENSIV BGT60LTR11AIP, Руководство пользователя

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Application Note page 2 of 33 V1.7
2022-08-01
XENSIV™ BGT60LTR11AIP shield
60 GHz radar system platform
Introduction
Table of contents
About this document ....................................................................................................................... 1
Table of contents ............................................................................................................................ 2
1 Introduction .......................................................................................................................... 3
1.1 60 GHz radar system platform ................................................................................................................ 3
1.2 Key features ............................................................................................................................................. 4
2 System specifications ............................................................................................................. 5
2.1 BGT60LTR11AIP shield parameters ........................................................................................................ 5
3 Hardware description ............................................................................................................. 6
3.1 Overview .................................................................................................................................................. 6
3.2 BGT60LTR11AIP MMIC ............................................................................................................................. 7
3.3 Sensor supply .......................................................................................................................................... 9
3.4 Crystal ...................................................................................................................................................... 9
3.5 External capacitors ................................................................................................................................ 10
3.6 Connectors ............................................................................................................................................ 11
3.7 EEPROM ................................................................................................................................................. 12
3.8 LEDs and level shifting .......................................................................................................................... 13
3.9 MMIC quad state inputs ......................................................................................................................... 14
3.10 Layer-stack up and routing ................................................................................................................... 15
4 Radar MMIC settings configuration .......................................................................................... 16
4.1 Operation mode .................................................................................................................................... 16
4.2 Detector threshold ................................................................................................................................ 18
4.3 Detector hold time ................................................................................................................................ 19
4.4 Operating frequency ............................................................................................................................. 20
4.5 Pulse repetition time ............................................................................................................................. 21
5 Autonomous mode operation ................................................................................................. 22
5.1 Battery-powered operation .................................................................................................................. 22
5.2 Arduino MKR operation ......................................................................................................................... 22
6 Measurement results ............................................................................................................. 23
6.1 Radiation pattern .................................................................................................................................. 23
6.2 Motion detection area ........................................................................................................................... 24
6.2.1 Autonomous mode .......................................................................................................................... 24
6.2.2 SPI mode and MMIC internal detector............................................................................................. 25
6.2.3 SPI mode and motion detection algorithm .................................................................................... 26
7 Power consumption analysis .................................................................................................. 27
7.1 Duty cycling ........................................................................................................................................... 27
7.2 Adaptive pulse repetition time ............................................................................................................. 28
8 References ........................................................................................................................... 31
Revision history............................................................................................................................. 32