Fingertip Pulse Signals Enhanced by Using Intermodulation Multiplication of Active High-Sensitivity Split-Ring Resonator

Ta Chung Chang, Po Kai Chan, Chia Hui Chen, Kuan Wei Chen, Chin Lung Yang

研究成果: Conference contribution

2 引文 斯高帕斯(Scopus)

摘要

This paper presents a novel active split ring resonator (SRR) for detecting the wrist and fingertip pulse signals. Though fingertip signal is extremely tiny in general, the proposed intermodulation multiplication technology can improve the sensitivity by more than 400%. The frequency shift of sensing can be multiplied to highly sensitive by measuring the 3rd, 5th, 7th and 9th intermodulation (IM) components. The pulse signal can be measured from the frequency deviations of SRR by interfering the coupling path on the surface of the sensor. In this work, the highest component can be achieved to 9th IM. The frequency shift of measuring the wrist pulse signal is increased from 3.5 MHz to 16 MHz. The fingertip signal is first measured by a microwave sensor and can achieve high accuracy of less than 0.75% error.

原文English
主出版物標題Proceedings of the 2018 IEEE/MTT-S International Microwave Symposium, IMS 2018
發行者Institute of Electrical and Electronics Engineers Inc.
頁面1416-1418
頁數3
ISBN(列印)9781538650677
DOIs
出版狀態Published - 2018 八月 17
事件2018 IEEE/MTT-S International Microwave Symposium, IMS 2018 - Philadelphia, United States
持續時間: 2018 六月 102018 六月 15

出版系列

名字IEEE MTT-S International Microwave Symposium Digest
2018-June
ISSN(列印)0149-645X

Other

Other2018 IEEE/MTT-S International Microwave Symposium, IMS 2018
國家United States
城市Philadelphia
期間18-06-1018-06-15

All Science Journal Classification (ASJC) codes

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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