TY - GEN
T1 - Design considerations for ultrasonic power transmission to millimeter-sized implantable microelectronics devices
AU - Meng, Miao
AU - Ibrahim, Ahmed
AU - Kiani, Mehdi
PY - 2015/12/4
Y1 - 2015/12/4
N2 - This paper presents the design considerations to improve the power transfer efficiency (PTE) of ultrasonic power transmission links for wireless powering of millimeter (mm)-sized implantable microelectronic devices (IMDs). We have shown by the ultrasound theory that the diameter of the transmitter (Tx) and receiver (Rx) ultrasonic transducers, operation frequency, and powering distance have significant effect on the sound beam profile and, therefore, PTE of the link. The proposed design guideline, which has been verified by measurement results, suggests that the Rx diameter should be maximized to the extent that the application allows, and then the Tx diameter and operation frequency should be carefully chosen such that the IMD locates inside the focal zone of the Tx transducer for a given powering distance. The PTEs of ultrasonic and optimized inductive links with 2 mm Rx have also been compared that suggests the use of ultrasound when the powering distance is larger than 45 mm.
AB - This paper presents the design considerations to improve the power transfer efficiency (PTE) of ultrasonic power transmission links for wireless powering of millimeter (mm)-sized implantable microelectronic devices (IMDs). We have shown by the ultrasound theory that the diameter of the transmitter (Tx) and receiver (Rx) ultrasonic transducers, operation frequency, and powering distance have significant effect on the sound beam profile and, therefore, PTE of the link. The proposed design guideline, which has been verified by measurement results, suggests that the Rx diameter should be maximized to the extent that the application allows, and then the Tx diameter and operation frequency should be carefully chosen such that the IMD locates inside the focal zone of the Tx transducer for a given powering distance. The PTEs of ultrasonic and optimized inductive links with 2 mm Rx have also been compared that suggests the use of ultrasound when the powering distance is larger than 45 mm.
UR - http://www.scopus.com/inward/record.url?scp=84962650019&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84962650019&partnerID=8YFLogxK
U2 - 10.1109/BioCAS.2015.7348295
DO - 10.1109/BioCAS.2015.7348295
M3 - Conference contribution
AN - SCOPUS:84962650019
T3 - IEEE Biomedical Circuits and Systems Conference: Engineering for Healthy Minds and Able Bodies, BioCAS 2015 - Proceedings
BT - IEEE Biomedical Circuits and Systems Conference
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 11th IEEE Biomedical Circuits and Systems Conference, BioCAS 2015
Y2 - 22 October 2015 through 24 October 2015
ER -