title: Electronic performance of a dual inductive link for a wireless neural recording implant.
abstract: This paper reports a dual inductive link to provide two-way wireless communication and power for a neural recording system. Particular emphasis is placed on explaining the challenges associated with two inductive links operating in the same space and possible solutions. This system uses a class E converter to sustain a large AC current in an external coil for transcutaneous energy transfer to an implant coil. A telemetry circuit generates a reverse-telemetry carrier frequency using an Integer-N PLL to support multiple outward data channels. Interference from the class E converter fundamental and harmonics is rejected using a differential coil configuration. An approach to filtering harmonic interference from the external power coil is also presented.
authors.affiliation: Illinois Institute of Technology, Chicago, IL 60616, USA. rushale@iit.edu
authors.forename: Alexander
authors.initials: A
authors.lastname: Rush
authors.forename: R
authors.initials: R
authors.lastname: Troyk
mesh_terms: D003143:Communication Devices for People with Disabilities; D025802:Electric Capacitance; D004581:Electronics; D004594:Electrophysiology / Q000379:methods; D004867:Equipment Design; D006801:Humans; D060526:Magnetic Fields; D008904:Miniaturization; D009474:Neurons / Q000473:pathology*; D019736:Prostheses and Implants; D012815:Signal Processing, Computer-Assisted; D013686:Telemetry / Q000379:methods