Title :
Vital sign detection for handheld communication device using antenna mismatching effect
Author :
Yong-Jun An ; Gi-Ho Yun ; Jong-Gwan Yook
Author_Institution :
Electr. & Electron. Eng. Dept., Yonsei Univ., Seoul, South Korea
Abstract :
This work presents heartbeat and respiration detection sensor to be applied for mobile communication devices. To estimate the near field effect, simulations are proceed to observe the magnitude variation of antenna reflection coefficient induced by human thorax movement of heart and lung. Experiments are carried out for heartbeat detection using dipole antenna with coupler and a method to improve the sensitivity of the system is proposed. Proposed cardiopulmonary detection system is implemented with off-the-shelf components at 2.4 GHz and excellent performance is obtained.
Keywords :
bioelectric potentials; biomedical communication; cardiovascular system; chemical sensors; dipole antennas; lung; mobile communication; patient diagnosis; pneumodynamics; antenna mismatching effect; antenna reflection coefficient; cardiopulmonary detection system; coupler; dipole antenna; frequency 2.4 GHz; handheld mobile communication devices; heartbeat detection sensor; human thorax movement; lung; near field effect estimation; respiration detection sensor; vital sign detection; Couplers; Detectors; Dipole antennas; Microwave oscillators; Microwave theory and techniques; Reflector antennas; Vital sign; antenna impedance mismatch; handheld device; heart and respiration rates; near field;
Conference_Titel :
Microwave Symposium Digest (IMS), 2013 IEEE MTT-S International
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4673-6177-4
DOI :
10.1109/MWSYM.2013.6697519
