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Attenuation in Transferred RF Power to a Biomedical Implant due to the Misalignment Coils

Authors: Batel Noureddine, Mehenni Mohamed, Dekar Lies


In biomedical implant field, a new formula is given for the study of Radio Frequency power attenuation by simultaneous effects of side and angular misalignment of the supply/data transfer coils. A confrontation with the practical measurements done into a Faraday cage, allowed a checking of the obtained theoretical results. The DC supply systems without material connection and the data transmitters used in the case of biomedical implants, can be well dimensioned by taking into account the possibility of power attenuation by misalignment of transfer coils

Keywords: Biomedical implant field, misalignment coils, powerattenuation, transmitter and receiver coils.

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[1] M. Mehenni, "Optimization of the elements of a telemetering chain", Thesis of doctorate, National School Polytechnic of Algiers, 1992.
[2] M. Soma, D. C. Galbraith, and R. L. White, "Radio-frequency coils in implantable devices: misalignment analysis and design procedure", IEEE Trans. on Biomedical Eng., 1987, vol.34, no. 4.
[3] F. E. Terman, "Radio engineers handbook", Mc Graw-Hill, 1943.
[4] W. H. K0, S. P. Liang, and C. D. F. Fung, "Design of radio-frequency powered coils for implant instruments", Med. & Biol. Eng. & Computing, 1977.
[5] F. C. Flack, E.D. James, and D.M. Schlapp, "Mutual inductance of aircored coils: effect on design of radio-frequency coupled implants", Pergamon press, Med. & Biol. Eng., 1971, vol.9.
[6] S. A. Nasar, C. R. Paul, and K. W. Whites, "Introduction to electromagnetic fields", Mac Graw-Hill, 1997.
[7] D. Jeutter,"Telemetry of biomedical signals", Medical & Life sciences Eng., 1994, vol. 13, pp. 131-145.
[8] A. Taflove, and M. E. Brodwin, "Numerical solution of steady-state electromagnetic scattering problems using the time-dependent Maxwell's equations", IEEE Trans. Microwave Theory and Technical, 1975, vol. 23, no. 8, pp. 623-630.
[9] B. Yavorski, and A. Detlaf, "Memorandum of physics", ED. from Moscow, 1986.
[10] M. Chossat, "Memorandum of mathematics", Ed. Dunod, 1977.
[11] M. Mehenni, M. Abignoli, E. Yvroud, and C. Marchal, "Feeding by external electromagnetic field for telemetering: design of an experimental bank", ED. RBM (France), 1992, vol.14, no. 2.