TY - JOUR
AU - Radziemski, Leon J.
AB - This paper presents power transmission performance of the ultrasound-based piezoelectric recharging system forimplantable medical devices. The efficiency of the piezoelectric ultrasonic transcutaneous energy transfer systemdepends on frequency matching of the transmitter and receiver, electrical, mechanical and acoustical impedancecharacteristics, distance between the transducers, and misalignment. However, it was realized that the angularmisalignment between transmitter and receiver was one of key factors to have effect on the power transmissionefficiency. As such, misalignment effect of the piezoelectric ultrasound transmitter and receiver on the powertransmission efficiency was investigated by theoretical analysis using finite-difference time-domain method. Thepressure field variation in the near field was also estimated to examine the influence of the power transfer performanceof the ultrasound-based charging system.Analytical results indicate that the transferred power is greatly reduced by voltage cancellation on the receiver fromphase shift due to the misalignment. Furthermore, significant acoustic pressure variation in the near field makes theeffect of misalignment on power transmission dependent on the receiver location.
TI - Effect of misalignment between ultrasound piezoelectric transducers on transcutaneous energy transfer
JF - Proceedings of SPIE
DO - 10.1117/12.2009895
DA - 2013-04-10
UR - https://www.deepdyve.com/lp/spie/effect-of-misalignment-between-ultrasound-piezoelectric-transducers-on-mbPUXTRMwO
SP - 868814
EP - 868814-8
VL - 8688
IS - 
DP - DeepDyve
ER -