@inproceedings{a40339c76bd447f5b2b0d7b1817e8d6d,
title = "A microwave perturbation-injection-locked sensor for wrist pulse detection",
abstract = "This paper presents a microwave perturbation-injection-locked (PIL) sensor with the self-oscillating complementary split-ring resonator (SO-CSRR) for the wrist pulse detection. The output of the SO-CSRR is then connected with the amplitude-based demodulator, which is composed of a microwave differentiator and an envelope detector, to acquire the wrist pulse. Since the SO-CSRR can generate and concentrate the electric field in the near-field region, it significantly increase the sensor sensitivity. The measured wrist pulse rate and waveform shape of the proposed PIL sensor agree those acquired by photoplethysmograph (PPG) sensor very well.",
keywords = "Complementary split-ring resonator (CSRR), Injection-locked theory, Perturbation theory, Perturbation-injection-locked (PIL) sensor, Vital-sign sensor",
author = "Wu, {Cheng Zhou} and Tseng, {Chao Hsiung}",
note = "Publisher Copyright: {\textcopyright} 2019 IEEE.; 2019 IEEE Asia-Pacific Microwave Conference, APMC 2019 ; Conference date: 10-12-2019 Through 13-12-2019",
year = "2019",
month = dec,
doi = "10.1109/APMC46564.2019.9038414",
language = "English",
series = "Asia-Pacific Microwave Conference Proceedings, APMC",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "336--338",
booktitle = "Proceedings of the 2019 IEEE Asia-Pacific Microwave Conference, APMC 2019",
address = "United States",
}