An Ultralow Power Burst-Chirp UWB Radar Transceiver for Indoor Vital Signs and Occupancy Sensing in 40-nm CMOS

Yao Hong Liu*, Sunil Sheelavant, Marco Mercuri, Paul Mateman, Masoud Babaie

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

9 Citations (Scopus)

Abstract

This letter presents an ultrawideband (UWB) radar for occupancy and vital signs detection. The proposed burst-chirp operation achieves > 30\times power reduction and abundant margin for the UWB spectrum regulations. With the proposed Domino chirp generation and time-domain predistortion, the radar has a fast chirp slope of 0.7 GHz/40 μ \text{s} and a low RMS error of 0.5 MHz. Fabricated in a 40-nm CMOS process, the presented radar consumes a record-low power of 680 μ \text{W} and can detect human respiration and heartbeat up to 15 and 5 m, respectively.

Original languageEnglish
Article number8891756
Pages (from-to)256-259
Number of pages4
JournalIEEE Solid-State Circuits Letters
Volume2
Issue number11
DOIs
Publication statusPublished - 2019

Keywords

  • Frequency-modulated continuous wave (FMCW) radar
  • ranging
  • ultrawideband (UWB)
  • vital-sign detection

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