Glove-Integrated Textile Antenna with Reduced SAR for Wearable UHF RFID Reader

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Glove-Integrated Textile Antenna with Reduced SAR for Wearable UHF RFID Reader. / Ahmed, Shahbaz ; Mehmood, Adnan ; Sydänheimo, Lauri ; Ukkonen, Leena ; Björninen, Toni.

2019 IEEE International Conference on RFID Technology and Applications (RFID-TA). IEEE, 2019. p. 231-235.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review

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Ahmed, S , Mehmood, A , Sydänheimo, L , Ukkonen, L & Björninen, T 2019, Glove-Integrated Textile Antenna with Reduced SAR for Wearable UHF RFID Reader. in 2019 IEEE International Conference on RFID Technology and Applications (RFID-TA). IEEE, pp. 231-235, IEEE International Conference on RFID Technology and Applications, 1/01/00. https://doi.org/10.1109/RFID-TA.2019.8892251

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@inproceedings{603da41e4c0b4a8d805a54eb7da489ab,

title = "Glove-Integrated Textile Antenna with Reduced SAR for Wearable UHF RFID Reader",

abstract = "We present a wearable slotted patch antenna embedded in a glove for wearable UHF RFID reader. The antenna is fully-textile based, small enough to fit on the area in the back of the hand and achieves the realized gain of –1.3 dBi at 866 MHz in body-worn configuration. The paper outlines the numerical optimization of the antenna using a layered hand model and assessment of the specific absorption rate to determine the maximum output power of the reader that complies with the SAR safety limits. As a novel feature, we have designed an isolator layer of conductive textile that is adhered inside the glove underneath the antenna to achieve 10 percent reduction in the specific absorption rate (SAR) and 1.14 dBi improvement in the realized gain compared to our earlier work. With these marked improvements, the output power of the reader is not limited by SAR, but by the regular RFID emission limit. In the wireless testing, we have verified a detection range of 4.7 meters for a regular dipole type RFID tag with 3.19 WEIRP.",

keywords = "slotted patch antenna, RFID reader antenna, UHF, wearable antenna, work glove application, e-textile",

author = "Shahbaz Ahmed and Adnan Mehmood and Lauri Syd{\"a}nheimo and Leena Ukkonen and Toni Bj{\"o}rninen",

year = "2019",

month = "11",

day = "7",

doi = "10.1109/RFID-TA.2019.8892251",

language = "English",

isbn = "978-1-7281-0590-1",

pages = "231--235",

booktitle = "2019 IEEE International Conference on RFID Technology and Applications (RFID-TA)",

publisher = "IEEE",

}

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TY - GEN

T1 - Glove-Integrated Textile Antenna with Reduced SAR for Wearable UHF RFID Reader

AU - Ahmed, Shahbaz

AU - Mehmood, Adnan

AU - Sydänheimo, Lauri

AU - Ukkonen, Leena

AU - Björninen, Toni

PY - 2019/11/7

Y1 - 2019/11/7

N2 - We present a wearable slotted patch antenna embedded in a glove for wearable UHF RFID reader. The antenna is fully-textile based, small enough to fit on the area in the back of the hand and achieves the realized gain of –1.3 dBi at 866 MHz in body-worn configuration. The paper outlines the numerical optimization of the antenna using a layered hand model and assessment of the specific absorption rate to determine the maximum output power of the reader that complies with the SAR safety limits. As a novel feature, we have designed an isolator layer of conductive textile that is adhered inside the glove underneath the antenna to achieve 10 percent reduction in the specific absorption rate (SAR) and 1.14 dBi improvement in the realized gain compared to our earlier work. With these marked improvements, the output power of the reader is not limited by SAR, but by the regular RFID emission limit. In the wireless testing, we have verified a detection range of 4.7 meters for a regular dipole type RFID tag with 3.19 WEIRP.

AB - We present a wearable slotted patch antenna embedded in a glove for wearable UHF RFID reader. The antenna is fully-textile based, small enough to fit on the area in the back of the hand and achieves the realized gain of –1.3 dBi at 866 MHz in body-worn configuration. The paper outlines the numerical optimization of the antenna using a layered hand model and assessment of the specific absorption rate to determine the maximum output power of the reader that complies with the SAR safety limits. As a novel feature, we have designed an isolator layer of conductive textile that is adhered inside the glove underneath the antenna to achieve 10 percent reduction in the specific absorption rate (SAR) and 1.14 dBi improvement in the realized gain compared to our earlier work. With these marked improvements, the output power of the reader is not limited by SAR, but by the regular RFID emission limit. In the wireless testing, we have verified a detection range of 4.7 meters for a regular dipole type RFID tag with 3.19 WEIRP.

KW - slotted patch antenna

KW - RFID reader antenna

KW - UHF

KW - wearable antenna

KW - work glove application

KW - e-textile

U2 - 10.1109/RFID-TA.2019.8892251

DO - 10.1109/RFID-TA.2019.8892251

M3 - Conference contribution

SN - 978-1-7281-0590-1

SP - 231

EP - 235

BT - 2019 IEEE International Conference on RFID Technology and Applications (RFID-TA)

PB - IEEE

ER -

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