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| Presentation | 2019-06-20 14:25 Study on a VHF-band Small Loop Antenna with Adaptive Control of the Matching Circuit for Heart Rate Sensor Saki Wada, Kengo Nishimoto, Yasuhiro Nishioka, Naofumi Yoneda (Mitsubishi Electric Corp.)  AP2019-18 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Vital signs of the body are related to mental stress conditions. The variation of the R-R interval (peak-to-peak interval of the heartbeats), in particular, reflects mental stress. Non-contact detection using a Doppler sensor has been extensively studied for heart rate measurement. However, Doppler sensors are highly affected by reflections from surrounding objects or external noise, making accurate acquisition of the R-R interval difficult. To solve this problem, we propose the use of a low-radiation-efficiency VHF-band loop antenna to overcome the above problem. However, the input impedance of this antenna depends on the surrounding conditions relative to its location. In this study, we propose a sensor configuration to control the antenna impedance based on changes in the surrounding conditions, and demonstrate that the proposed configuration improves the sensor sensitivity. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Heart rate sensor / Small antenna / Adaptive control / Variable matching circuit / VHF-band / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 119, no. 91, AP2019-18, pp. 19-22, June 2019. | |
| Paper # | AP2019-18 | |
| Date of Issue | 2019-06-13 (AP) | |
| ISSN | Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | AP2019-18 |
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| Conference Information | |
| Committee | AP |
| Conference Date | 2019-06-20 - 2019-06-20 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kikai-Shinko-Kaikan Bldg. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Antennas and Propagation |
| Paper Information | |
| Registration To | AP |
| Conference Code | 2019-06-AP |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Study on a VHF-band Small Loop Antenna with Adaptive Control of the Matching Circuit for Heart Rate Sensor |
| Sub Title (in English) | |
| Keyword(1) | Heart rate sensor |
| Keyword(2) | Small antenna |
| Keyword(3) | Adaptive control |
| Keyword(4) | Variable matching circuit |
| Keyword(5) | VHF-band |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Saki Wada |
| 1st Author's Affiliation | Mitsubishi Electric Corporation (Mitsubishi Electric Corp.) |
| 2nd Author's Name | Kengo Nishimoto |
| 2nd Author's Affiliation | Mitsubishi Electric Corporation (Mitsubishi Electric Corp.) |
| 3rd Author's Name | Yasuhiro Nishioka |
| 3rd Author's Affiliation | Mitsubishi Electric Corporation (Mitsubishi Electric Corp.) |
| 4th Author's Name | Naofumi Yoneda |
| 4th Author's Affiliation | Mitsubishi Electric Corporation (Mitsubishi Electric Corp.) |
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| Speaker | Author-1 |
| Date Time | 2019-06-20 14:25:00 |
| Presentation Time | 25 minutes |
| Registration for | AP |
| Paper # | AP2019-18 |
| Volume (vol) | vol.119 |
| Number (no) | no.91 |
| Page | pp.19-22 |
| #Pages | 4 |
| Date of Issue | 2019-06-13 (AP) |
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