TY - JOUR
T1 - Multicoils-based inductive links dedicated to power up implantable medical devices
T2 - Modeling, design and experimental results
AU - Sawan, Mohamad
AU - Hashemi, Saeid
AU - Sehil, Mohamed
AU - Awwad, Falah
AU - Hajj-Hassan, Mohamad
AU - Khouas, Abdelhakim
N1 - Funding Information:
Acknowledgment The authors would like to acknowledge the financial support from NSERC and the Canadian Research Chair in Smart Medical Devices, and the design and fabrication tools provided by CMC Microsystems.
PY - 2009/10
Y1 - 2009/10
N2 - We present in this paper a new topology of inductively-coupled links based on a monolithic multi-coils receiver. A model is built to characterize the proposed structure using Matlab and is verified employing simulation tools under ADS electromagnetic environment. This topology accounts for the losses associated with the receiver micro-coil including substrate and oxide layers. The geometry of micro-coils significantly desensitizes the link to both angular and side misalignments. A custom fabrication process using 1 micron metal thickness is also presented by which two sets of micro-coils varying in the number of coils are realized. The first set possesses one coil 4 mm of diameter and represents a power efficiency close to 4% while the second set possesses multi-coils with an efficiency of 18%. The resulting optimized link can deliver up to 50 mW of power to power up an implantable device either sensor or stimulator. The experimental results for the prototypes are remarkably in agreement with those obtained from simulated models and circuits.
AB - We present in this paper a new topology of inductively-coupled links based on a monolithic multi-coils receiver. A model is built to characterize the proposed structure using Matlab and is verified employing simulation tools under ADS electromagnetic environment. This topology accounts for the losses associated with the receiver micro-coil including substrate and oxide layers. The geometry of micro-coils significantly desensitizes the link to both angular and side misalignments. A custom fabrication process using 1 micron metal thickness is also presented by which two sets of micro-coils varying in the number of coils are realized. The first set possesses one coil 4 mm of diameter and represents a power efficiency close to 4% while the second set possesses multi-coils with an efficiency of 18%. The resulting optimized link can deliver up to 50 mW of power to power up an implantable device either sensor or stimulator. The experimental results for the prototypes are remarkably in agreement with those obtained from simulated models and circuits.
KW - Inductive link
KW - Medical microdevices
KW - Power transfer efficiency
KW - Smart implants
KW - Wireless power transfer
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U2 - 10.1007/s10544-009-9323-7
DO - 10.1007/s10544-009-9323-7
M3 - Article
C2 - 19488859
AN - SCOPUS:70549104631
SN - 1387-2176
VL - 11
SP - 1059
EP - 1070
JO - Biomedical Microdevices
JF - Biomedical Microdevices
IS - 5
ER -