5.8 GHz vital signal sensing Doppler radar using isolation-improved branch-line coupler

Sang Gyu Kim, Hyun Kim, Yongshik Lee, Il Suek Kho, Jong Gwan Yook

Research output: Chapter in Book/Report/Conference proceedingConference contribution

17 Citations (Scopus)

Abstract

5.8 GHz Doppler radar which is wireless sensor to collect the respiration and heart rate using feed-forward type branch-line coupler is developed. Even though the wireless sensing systems using a circulator or branch-line coupler have been developed, these systems have low sensitivity because of low isolation and bulky system due to Tx/Rx two independent signal paths. In this paper, proposed Doppler radar has improved the isolation by using feed-forward type branch-line coupler, which has -55 dB isolation between transmitter and receiver. As a result of achieving high isolation, irreversible vital signal due to the low isolation of conventional branch-line coupler can be detected. So, sensitivity of the system is increased drastically.

Original languageEnglish
Title of host publicationProceedings of the 3rd European Radar Conference, EuRAD 2006
PublisherIEEE Computer Society
Pages249-252
Number of pages4
ISBN (Print)2960055179, 9782960055177
DOIs
Publication statusPublished - 2006 Jan 1
Event3rd European Radar Conference, EuRAD 2006 - Manchester, United Kingdom
Duration: 2006 Sep 132006 Sep 15

Publication series

NameProceedings of the 3rd European Radar Conference, EuRAD 2006

Other

Other3rd European Radar Conference, EuRAD 2006
CountryUnited Kingdom
CityManchester
Period06/9/1306/9/15

Fingerprint

Doppler radar
Transmitters
Sensors

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

Cite this

Kim, S. G., Kim, H., Lee, Y., Kho, I. S., & Yook, J. G. (2006). 5.8 GHz vital signal sensing Doppler radar using isolation-improved branch-line coupler. In Proceedings of the 3rd European Radar Conference, EuRAD 2006 (pp. 249-252). [4058305] (Proceedings of the 3rd European Radar Conference, EuRAD 2006). IEEE Computer Society. https://doi.org/10.1109/EURAD.2006.280321
Kim, Sang Gyu ; Kim, Hyun ; Lee, Yongshik ; Kho, Il Suek ; Yook, Jong Gwan. / 5.8 GHz vital signal sensing Doppler radar using isolation-improved branch-line coupler. Proceedings of the 3rd European Radar Conference, EuRAD 2006. IEEE Computer Society, 2006. pp. 249-252 (Proceedings of the 3rd European Radar Conference, EuRAD 2006).
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Kim, SG, Kim, H, Lee, Y, Kho, IS & Yook, JG 2006, 5.8 GHz vital signal sensing Doppler radar using isolation-improved branch-line coupler. in Proceedings of the 3rd European Radar Conference, EuRAD 2006., 4058305, Proceedings of the 3rd European Radar Conference, EuRAD 2006, IEEE Computer Society, pp. 249-252, 3rd European Radar Conference, EuRAD 2006, Manchester, United Kingdom, 06/9/13. https://doi.org/10.1109/EURAD.2006.280321

5.8 GHz vital signal sensing Doppler radar using isolation-improved branch-line coupler. / Kim, Sang Gyu; Kim, Hyun; Lee, Yongshik; Kho, Il Suek; Yook, Jong Gwan.

Proceedings of the 3rd European Radar Conference, EuRAD 2006. IEEE Computer Society, 2006. p. 249-252 4058305 (Proceedings of the 3rd European Radar Conference, EuRAD 2006).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Kim SG, Kim H, Lee Y, Kho IS, Yook JG. 5.8 GHz vital signal sensing Doppler radar using isolation-improved branch-line coupler. In Proceedings of the 3rd European Radar Conference, EuRAD 2006. IEEE Computer Society. 2006. p. 249-252. 4058305. (Proceedings of the 3rd European Radar Conference, EuRAD 2006). https://doi.org/10.1109/EURAD.2006.280321