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 language | English |
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Article number | 8891756 |
Pages (from-to) | 256-259 |
Number of pages | 4 |
Journal | IEEE Solid-State Circuits Letters |
Volume | 2 |
Issue number | 11 |
DOIs | |
Publication status | Published - 2019 |
Keywords
- Frequency-modulated continuous wave (FMCW) radar
- ranging
- ultrawideband (UWB)
- vital-sign detection