A Biosafety Comparison Between Capacitive and Inductive Coupling in Biomedical Implants

Author

Al-Kalbani, Ahmed I. ; Yuce, Mehmet Rasit ; Redoute, Jean-Michel

Author_Institution

Dept. of Electr. & Comput. Syst. Eng., Monash Univ., Melbourne, VIC, Australia

Volume

13

fYear

2014

fDate

2014

Firstpage

1168

Lastpage

1171

Abstract

This letter investigates the link efficiencies and ensuing biohazards when capacitive versus inductive coupling is used to power biomedical implants electromagnetically. Electromagnetic simulations illustrate that the power link efficiency of capacitive coupling decays slower as a function of the distance between plates compared to inductive coupling. Specifically, the case designs show that, using a transmitted power of 1 W at 5 MHz, capacitive coupling produces a 10-g averaged SAR value of 1.63 W/kg compared to 2.39 W/kg for an inductive coupling of the same dimension.

Keywords

biological effects of radiation; health hazards; prosthetic power supplies; averaged SAR value; biohazards; biomedical implant; biosafety comparison; capacitive coupling; case designs; electromagnetic simulations; frequency 5 MHz; inductive coupling; power 1 W; power link efficiency; transmitted power; Capacitors; Coils; Couplings; Electromagnetics; Implants; Integrated circuit modeling; Muscles; Biomedical electronics; electromagnetic coupling; implantable biomedical devices; specific absorption rate;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2014.2328375

Filename

6840987