In this paper, a study of the power loss attenuation of the plane wave travelling through the tissue layers, from the outside to the inside of the skull within a cochlear implant, is performed. Different implantation depths of the internal antenna from 10 to 30 mm are considered. To this purpose, the gain and attenuation in dB are studied. A multilayer tissue model is developed, consisting of mainly skin, mastoid bone and brain. An s-parameter analysis is also carried out, using loop antennas and simulated head tissue. Ansoft Ansys® HFSS software is used for electro-magnetic simulations of the antennas, placed in different types of human tissues. Smith charts for antenna placed in both skin and multi-tissue model are included.
Maria-Alexandra Paun and Catherine Dehollain, "Multilayered tissues model for wave propagation loss assessment in cochlear implants," Proc. SPIE 10247, Bio-MEMS and Medical Microdevices III, 1024702 (Presented at SPIE Microtechnologies: May 10, 2017; Published: 30 May 2017); https://doi.org/10.1117/12.2265854.
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