An analytical model for inductively coupled multichannel implantable system with micro-coil array

Document Type



Implantable system is widely used for functional electrical stimulation to repair the damaged nerve function. We propose a multichannel wireless implantable system using micro-coil array to implement parallel signal transmission based on inductive coupling, which meets the increasing requirement of some implantable system for high data rate and high power efficiency. However, the magnetic coupling among carrier from different channels will affect the operation of each link. In this paper, this interference is analyzed and design equations are derived, which are used to design coils, arrange their position and apply carrier for each channel to maximize the data signal level received at the implant side. A prototype of multichannel system has been built and experimental results show that data can be transmitted parallelly and high data rate can be achieved. This theoretical calculation verifies the feasibility of using the micro-coil array to achieve multichannel transcutaneous transmission for neural electrical stimulation.


Electric coils; Implants; Artificial; Multichannel communication; Neural stimulation; Neurophysiology


Bioelectrical and Neuroengineering | Biomedical | Biomedical Devices and Instrumentation | Electrical and Computer Engineering | Orthotics and Prosthetics | Systems and Communications


Use Find in Your Library, contact the author, or interlibrary loan to garner a copy of the item. Publisher policy does not allow archiving the final published version. If a post-print (author's peer-reviewed manuscript) is allowed and available, or publisher policy changes, the item will be deposited.

UNLV article access

Search your library