title: New architecture for wireless implantable neural recording microsystems based on frequency-division multiplexing.
abstract: This paper investigates the use of a new architecture for implantable microsystems for multi-channel intra-cortical neural recording. The proposed architecture performs frequency-division multiplexing (FDM) to wirelessly transfer multiple neural channels to an external setup. Based on the proposed idea, an 8-channel wireless neural recording system was designed. As a result of FDM, preconditioned neural signals are placed in the frequency domain with 100kHz spacing, occupying a approximately 800-kHz bandwidth starting from 10MHz. The entire band is then shifted to within the traditional frequency modulation (FM) band. The system, designed in a 0.18-microm standard CMOS process, consumes 4.7mW@1.8V.
authors.affiliation: Electrical Engineering Dept., S. Rajaee University, Tehran, Iran.
authors.forename: Alireza
authors.initials: A
authors.lastname: Rajabi-Tavakkol
authors.forename: Amir M
authors.initials: AM
authors.lastname: Sodagar
authors.forename: Mohammad H
authors.initials: MH
authors.lastname: Refan
mesh_terms: D004582:Electronics, Medical / Q000295:instrumentation / Q000379:methods*; D004867:Equipment Design; D006801:Humans; D009488:Neurosciences / Q000295:instrumentation / Q000379:methods*; D019736:Prostheses and Implants