TY - GEN
T1 - 45% RF-to-DC Conversion Efficiency Wireless Power Transfer System Through Biological Tissues Using Complex Conjugate Impedance Matching Taking Account of Tissue's Properties
AU - Chalise, Sumin
AU - Nakao, Mitsuki
AU - Tahar, Fairus
AU - Barakat, Adel
AU - Yoshitomi, Kuniaki
AU - Pokharel, Ramesh K.
PY - 2019/6
Y1 - 2019/6
N2 - This paper presents a complex conjugate impedance matching technique taking account of the electric properties of biological tissues during power transfer. Output impedance of a wireless power transfer (WPT) system depends on the electrical property of tissues where the system is being used. So, impedance mismatch between Rx and rectifier occurs when the system optimized for air is used in biological tissues. First, the system is matched in the air and later, impedance mismatch is estimated when the same system is being used in chicken which is later compensated. The proposed matching technique will bring back the rf-dc power conversion efficiency (PCE) very close to that of the system being used in the air. Experiment was carried out in three different cases where PCE is 49.53% in the air, 30% in chicken with the conventional conjugate matching and 45.5% in the chicken using the proposed matching technique.
AB - This paper presents a complex conjugate impedance matching technique taking account of the electric properties of biological tissues during power transfer. Output impedance of a wireless power transfer (WPT) system depends on the electrical property of tissues where the system is being used. So, impedance mismatch between Rx and rectifier occurs when the system optimized for air is used in biological tissues. First, the system is matched in the air and later, impedance mismatch is estimated when the same system is being used in chicken which is later compensated. The proposed matching technique will bring back the rf-dc power conversion efficiency (PCE) very close to that of the system being used in the air. Experiment was carried out in three different cases where PCE is 49.53% in the air, 30% in chicken with the conventional conjugate matching and 45.5% in the chicken using the proposed matching technique.
UR - http://www.scopus.com/inward/record.url?scp=85069956579&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85069956579&partnerID=8YFLogxK
U2 - 10.1109/mwsym.2019.8700821
DO - 10.1109/mwsym.2019.8700821
M3 - Conference contribution
AN - SCOPUS:85069956579
T3 - IEEE MTT-S International Microwave Symposium Digest
SP - 1419
EP - 1422
BT - 2019 IEEE MTT-S International Microwave Symposium, IMS 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2019 IEEE MTT-S International Microwave Symposium, IMS 2019
Y2 - 2 June 2019 through 7 June 2019
ER -