SLYT836 March   2023 IWR6443 , IWR6843 , IWR6843AOP

 

  1. 1 Introduction
  2. 2 The importance of integration
  3. 3 FMCW
  4. 4 Chirps
  5. 5 Mixer
  6. 6 FFT and peak detection
  7. 7 Beamsteering, in the direction that you want to sense
  8. 8 Calibration
  9. 9 Conclusion
  10. 10Related Websites

9 Conclusion

TI mmWave devices include a high level of integrated features needed for FMCW radar, and require only one external 40-MHz crystal to clock the complete front end. Such products can detect fine micro-Doppler motion in three dimensions, including the detection of the breathing and heart rates of humans.

The further integration of multiple TX chains with phase shifters allows for transmit beamforming and beamsteering, enabling SNR improvements in a reduced field of view while maintaining MIMO operation for 3D sensing.

Finally, the integration of monitoring and calibration for all analog components enables consistent performance across the lifetime of the device. This level of analog integration enables a multipatient contactless vital signs sensor for at-home use.