TY - JOUR
T1 - Development of 2.45 GHz Antenna for Flexible Compact Radiation Dosimeter Tags
AU - Sanusi, Ololade M.
AU - Ghaffar, Farhan A.
AU - Shamim, Atif
AU - Vaseem, Mohammad
AU - Wang, Ying
AU - Roy, Langis
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This work was supported in part by NSERC and Best Medical Canada Ltd.
PY - 2019
Y1 - 2019
N2 - Numerous medical operations employ blood transfusions, requiring X-ray irradiated blood for safety concerns. Current irradiation techniques can be significantly improved by replacing standard visual indicators with wireless dosimeter tags that automate the process, reducing inefficiencies and eliminating blood wastage. A key requirement of the proposed dosimeter tag is flexible and efficient antennas that can be mounted on blood bags. This paper presents the design of a low-cost inkjet-printed dipole antenna on flexible Kapton substrate for a 2.45 GHz RFID dosimeter tag. The tag is to be used in a lossy blood environment, which can severely affect antenna radiation performance. To mitigate this, the concept of artificial magnetic conductor (AMC) unit cells is investigated for best impedance and gain performance. When integrated with a dipole radiator, the fabricated AMC-backed antenna maintains broadside radiation with gains of 4.1 dBi to 4.8 dBi under planar and bending conditions, and on a lossy blood bag. In a rectenna configuration, the antenna can power sensors for ranges up to 1m. Measured output dc voltages up to 1.7 V are achieved across a 25 kΩ resistor. This antenna design is flexible, compact, efficient on lossy structures and suitable for direct integration with biomedical sensing chips.
AB - Numerous medical operations employ blood transfusions, requiring X-ray irradiated blood for safety concerns. Current irradiation techniques can be significantly improved by replacing standard visual indicators with wireless dosimeter tags that automate the process, reducing inefficiencies and eliminating blood wastage. A key requirement of the proposed dosimeter tag is flexible and efficient antennas that can be mounted on blood bags. This paper presents the design of a low-cost inkjet-printed dipole antenna on flexible Kapton substrate for a 2.45 GHz RFID dosimeter tag. The tag is to be used in a lossy blood environment, which can severely affect antenna radiation performance. To mitigate this, the concept of artificial magnetic conductor (AMC) unit cells is investigated for best impedance and gain performance. When integrated with a dipole radiator, the fabricated AMC-backed antenna maintains broadside radiation with gains of 4.1 dBi to 4.8 dBi under planar and bending conditions, and on a lossy blood bag. In a rectenna configuration, the antenna can power sensors for ranges up to 1m. Measured output dc voltages up to 1.7 V are achieved across a 25 kΩ resistor. This antenna design is flexible, compact, efficient on lossy structures and suitable for direct integration with biomedical sensing chips.
UR - http://hdl.handle.net/10754/655906
UR - https://ieeexplore.ieee.org/document/8692375/
UR - http://www.scopus.com/inward/record.url?scp=85070653342&partnerID=8YFLogxK
U2 - 10.1109/TAP.2019.2911647
DO - 10.1109/TAP.2019.2911647
M3 - Article
SN - 0018-926X
VL - 67
SP - 5063
EP - 5072
JO - IEEE Transactions on Antennas and Propagation
JF - IEEE Transactions on Antennas and Propagation
IS - 8
ER -