Low-Cost Differential Front-End for Doppler Radar Vital Sign Monitoring
We present a differential front end design for improving the performance of short-range low-cost Doppler radars for vital sign detection with application to automotive driver safety systems, health monitoring, and security screening. By using dual helical antennas each with a 40-degree beamwidth, it...
| Main Authors: | , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
Institute of Electrical and Electronics Engineers
2010
|
| Subjects: | |
| Online Access: | http://hdl.handle.net/1721.1/59319 |
| _version_ | 1811070818489204736 |
|---|---|
| author | Fletcher, Richard Ribon Han, Jing |
| author2 | Massachusetts Institute of Technology. Media Laboratory |
| author_facet | Massachusetts Institute of Technology. Media Laboratory Fletcher, Richard Ribon Han, Jing |
| author_sort | Fletcher, Richard Ribon |
| collection | MIT |
| description | We present a differential front end design for improving the performance of short-range low-cost Doppler radars for vital sign detection with application to automotive driver safety systems, health monitoring, and security screening. By using dual helical antennas each with a 40-degree beamwidth, it is possible to illuminate the body in two adjacent locations to perform a differential measurement. Since only one of the beams illuminates the heart, the baseband signal from the second radar is used for motion cancellation. We demonstrate this approach using a custom-designed dual helical antenna and simple direct-conversion radar circuits implemented in microstrip operating at 2.460 GHz and 2.510 GHz., respectively. Heart rate data is shown for detection distances of 0.5 meter showing reduction in background motion noise compared to data from traditional single radar unit design. |
| first_indexed | 2024-09-23T08:42:05Z |
| format | Article |
| id | mit-1721.1/59319 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T08:42:05Z |
| publishDate | 2010 |
| publisher | Institute of Electrical and Electronics Engineers |
| record_format | dspace |
| spelling | mit-1721.1/593192022-09-23T13:57:22Z Low-Cost Differential Front-End for Doppler Radar Vital Sign Monitoring Fletcher, Richard Ribon Han, Jing Massachusetts Institute of Technology. Media Laboratory Fletcher, Richard Ribon Fletcher, Richard Ribon Han, Jing Doppler radar biomedical signal detection differential heart rate helical antenna vital sign We present a differential front end design for improving the performance of short-range low-cost Doppler radars for vital sign detection with application to automotive driver safety systems, health monitoring, and security screening. By using dual helical antennas each with a 40-degree beamwidth, it is possible to illuminate the body in two adjacent locations to perform a differential measurement. Since only one of the beams illuminates the heart, the baseband signal from the second radar is used for motion cancellation. We demonstrate this approach using a custom-designed dual helical antenna and simple direct-conversion radar circuits implemented in microstrip operating at 2.460 GHz and 2.510 GHz., respectively. Heart rate data is shown for detection distances of 0.5 meter showing reduction in background motion noise compared to data from traditional single radar unit design. 2010-10-14T15:00:59Z 2010-10-14T15:00:59Z 2009-07 Article http://purl.org/eprint/type/JournalArticle 978-1-4244-2803-8 0149-645X INSPEC Accession Number: 10788926 http://hdl.handle.net/1721.1/59319 Fletcher, R., and Jing Han. “Low-cost differential front-end for Doppler radar vital sign monitoring.” Microwave Symposium Digest, 2009. MTT '09. IEEE MTT-S International. 2009. 1325-1328. © 2009 IEEE en_US http://dx.doi.org/10.1109/MWSYM.2009.5165949 IEEE MTT-S International Microwave Symposium Digest, 2009. Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf Institute of Electrical and Electronics Engineers IEEE |
| spellingShingle | Doppler radar biomedical signal detection differential heart rate helical antenna vital sign Fletcher, Richard Ribon Han, Jing Low-Cost Differential Front-End for Doppler Radar Vital Sign Monitoring |
| title | Low-Cost Differential Front-End for Doppler Radar Vital Sign Monitoring |
| title_full | Low-Cost Differential Front-End for Doppler Radar Vital Sign Monitoring |
| title_fullStr | Low-Cost Differential Front-End for Doppler Radar Vital Sign Monitoring |
| title_full_unstemmed | Low-Cost Differential Front-End for Doppler Radar Vital Sign Monitoring |
| title_short | Low-Cost Differential Front-End for Doppler Radar Vital Sign Monitoring |
| title_sort | low cost differential front end for doppler radar vital sign monitoring |
| topic | Doppler radar biomedical signal detection differential heart rate helical antenna vital sign |
| url | http://hdl.handle.net/1721.1/59319 |
| work_keys_str_mv | AT fletcherrichardribon lowcostdifferentialfrontendfordopplerradarvitalsignmonitoring AT hanjing lowcostdifferentialfrontendfordopplerradarvitalsignmonitoring |