Presentation 2020-11-19
920MHz/5.02GHz Bands Wireless Tag for In-Body/Out-Body Dual-Use RFID System
Bowen Dang, Mizuki Motoyoshi, Suguru Kameda, Noriharu Suematsu,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) In recent years, RFID systems have been widely used in the medical field to ameliorate life of patients. In the field of dental care wireless tags are implanted to dentures and used for confirmation of dentures. Conventional wireless tags are supposed to be used in the in-body environment, and it is difficult to communicate outside the body. If dentures are accidentally swallowed or lost, it is necessary to distinguish between the in-body and out-body and figure out the location of the dentures. We have proposed a RFID system that can communicate in in-body/out-body by using different frequencies. In this paper, since the conventional tag for in-body causes mismatch outside the body, the mismatch is corrected by applying a matching circuit to the IC chip. We proposed a small wireless tag and 920 MHz for in-body and 5.02 GHz for out-body, then prototyped it, and measured the communication distance. It was confirmed that communication was possible up to 30 cm in in-body condition and 27 cm in out-body condition.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) RFID / Denture / Tag / In-Body / Out-Body / BAN / Dual-Band / Wireless Power Transmission
Paper # MW2020-67
Date of Issue 2020-11-12 (MW)

Conference Information
Committee MW
Conference Date 2020/11/19(1days)
Place (in Japanese) (See Japanese page)
Place (in English) Online
Topics (in Japanese) (See Japanese page)
Topics (in English)
Chair Yoshinori Kogami(Utsunomiya Univ.)
Vice Chair Tadashi Kawai(Univ. of Hyogo) / Kensuke Okubo(Okayama Prefectural Univ.) / Shintaro Shinjo(Mitsubishi Electric)
Secretary Tadashi Kawai(Fujitsu Labs.) / Kensuke Okubo(Saitama Univ.) / Shintaro Shinjo
Assistant Kyoya Takano(Tokyo Univ. of Science) / Naoki Hasegawa(Softbank)

Paper Information
Registration To Technical Committee on Microwaves
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) 920MHz/5.02GHz Bands Wireless Tag for In-Body/Out-Body Dual-Use RFID System
Sub Title (in English)
Keyword(1) RFID
Keyword(2) Denture
Keyword(3) Tag
Keyword(4) In-Body
Keyword(5) Out-Body
Keyword(6) BAN
Keyword(7) Dual-Band
Keyword(8) Wireless Power Transmission
1st Author's Name Bowen Dang
1st Author's Affiliation Tohoku University(Tohoku Univ.)
2nd Author's Name Mizuki Motoyoshi
2nd Author's Affiliation Tohoku University(Tohoku Univ.)
3rd Author's Name Suguru Kameda
3rd Author's Affiliation Tohoku University(Tohoku Univ.)
4th Author's Name Noriharu Suematsu
4th Author's Affiliation Tohoku University(Tohoku Univ.)
Date 2020-11-19
Paper # MW2020-67
Volume (vol) vol.120
Number (no) MW-240
Page pp.pp.12-17(MW),
#Pages 6
Date of Issue 2020-11-12 (MW)