Title :
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
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;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2014.2328375
