Paper Info
Title
Modeling and optimization of mm-sized solenoid coils for biomedical implants
Abstract
The new trend towards minimally invasive mm-sized and free-floating distributed implants imposes a significant challenge in wireless power transmission to these medical devices. The magnetic field produced by external transmitter (Tx) coils at the position of the implants can be considered homogeneous to separate optimization of the Tx and receiver (Rx) coils for efficient power transfer. This paper focuses on optimization of the solenoid-type Rx coils, which are suitable for this application. We have developed an analytical model of solenoid coils that includes the impact of tissue and coating around the coils and verifies through simulations and measurements. Using the proposed model, under a given size restriction and a specific load, we find the optimal operating frequency and coil geometry by maximizing a figure of merit for Rx. For a mm-sized coil, the optimal operating frequency and the number of turns are found 500 MHz and 6, respectively, if the coil is closely wound using AWG36 copper wires.
Year
DOI
Venue
2016
10.1109/BioCAS.2016.7833797
2016 IEEE Biomedical Circuits and Systems Conference (BioCAS)
Keywords
Field
DocType
AWG36 copper wire,wound,coil geometry,solenoid-type Rx coil,receiver coil,external transmitter coil,magnetic field,medical device,wireless power transmission,biomedical implant,solenoid coil optimization,solenoid coil modeling,frequency 500 MHz
Transmitter,Magnetic field,Wireless,Computer science,Electronic engineering,Figure of merit,Electromagnetic coil,Maximum power transfer theorem,Power transmission,Electrical engineering,Solenoid
Conference
ISSN
ISBN
Citations 
2163-4025
978-1-5090-2960-0
0
PageRank 
References 
Authors
0.34
0
3
Name
Order
Citations
PageRank
Yu-Hua Cheng125.85
Gaofeng Wang22410.09
Maysam Ghovanloo31090145.62