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

Journal article (2019)

Authors

Yao Hong Liu Stichting IMEC Nederland
Sunil Sheelavant University of Zürich, Stichting IMEC Nederland, ETH Zürich
Marco Mercuri Stichting IMEC Nederland
Paul Mateman Stichting IMEC Nederland
M. Babaie Electronics - EEMCS
Research Group
Electronics (EEMCS) (TU Delft)
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Published Date

2019

Language

English

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Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Microelectronics

Research Group

Electronics

Abstract

This letter presents an ultrawideband (UWB) radar for occupancy and vital signs detection. The proposed burst-chirp operation achieves > 30 imes 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 ext{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 ext{W} and can detect human respiration and heartbeat up to 15 and 5 m, respectively.

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