@inproceedings{92e2f41caf24493fba08d18c2387f937,
title = "Design of axial-mode helical antennas for Doppler-based continuous non-contact vital signs monitoring sensors",
abstract = "An Axial-Mode Helical Antenna (AMHA) design for applications in Doppler-based continuous non-contact vital signs (NCVS) monitoring sensor systems is presented. Two methodologies of on-reflector impedance matching are presented as a solution to the helical antennas' non-50 input impedance issue. The antennas are evaluated on their performance of VSWR, impedance, radiation pattern directivity, size and gain. A size reduction design process is given for custom sizing the helical antenna, and the resulting structures are compared versus a patch antenna at 2.4GHz that is often used in NCVS systems. Our test data indicates that an AMHA can significantly increase accuracy of NCVS systems by increasing the system's Signal-to-Noise-and-Interference Ratio (SNIR).",
keywords = "Antennas, Biomedical telemetry, Directive antennas, Doppler radar, Helical antennas, Impedance matching, Vital signs detection",
author = "Alex Boothby and Royce Hwang and Vighneshrudra Das and Jerry Lopez and Lie, {Donald Y.C.}",
year = "2012",
doi = "10.1109/RWS.2012.6175377",
language = "English",
isbn = "9781457711541",
series = "RWW 2012 - Proceedings: IEEE Radio and Wireless Symposium, RWS 2012",
pages = "87--90",
booktitle = "RWW 2012 - Proceedings",
note = "2012 6th IEEE Radio and Wireless Week, RWW 2012 - 2012 IEEE Radio and Wireless Symposium, RWS 2012 ; Conference date: 15-01-2012 Through 18-01-2012",
}