@inproceedings{2ec479d0dfaf42c79fca8caf8a308e45,
title = "RF bio-radar system using a compact lumped six-port demodulator and Quadrifilar Helix antenna",
abstract = "This paper presents a bio-radar system using a compact lumped six-port demodulator and a Quadrifilar Helix Antenna (QHA) for remote respiration and heartbeat monitoring. Since bio-radar applications require low power characteristics and six-port structure has an advantage in low power operation, the proposed system is configured with a six-port demodulator replacing active frequency mixers. For the compactness and minimization in size at low frequency applications, the six-port demodulator which consists of three hybrid couplers and a power divider is implemented by lumped elements. Also, the proposed system adopts a QHA module that has high Tx and Rx isolation characteristics. The system performance is verified at 917 MHz by monitoring respiration and heartbeat.",
keywords = "Bio-radar system, lumped six-port architecture, quadrifilar antenna, six-port demodulator",
author = "Lee, {Han Lim} and Park, {Dong Hoon} and Jang, {Hyung Seok} and Dong, {Hyun Jun} and Lee, {Moon Que} and Yu, {Jong Won}",
year = "2013",
doi = "10.1109/APMC.2013.6694999",
language = "English",
isbn = "9781479914746",
series = "Asia-Pacific Microwave Conference Proceedings, APMC",
pages = "987--989",
booktitle = "2013 Asia-Pacific Microwave Conference Proceedings, APMC 2013",
note = "2013 3rd Asia-Pacific Microwave Conference, APMC 2013 ; Conference date: 05-11-2013 Through 08-11-2013",
}