Rajabi-Tavakkol Alireza, Sodagar Amir M, Refan Mohammad H
Electrical Engineering Dept., S. Rajaee University, Tehran, Iran.
Annu Int Conf IEEE Eng Med Biol Soc. 2010;2010:6449-52. doi: 10.1109/IEMBS.2010.5627336.
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.
本文研究了一种用于多通道皮层内神经记录的可植入微系统的新架构。所提出的架构执行频分复用（FDM），以将多个神经通道无线传输到外部装置。基于所提出的想法，设计了一种8通道无线神经记录系统。作为频分复用的结果，预处理后的神经信号以100kHz的间隔放置在频域中，从10MHz开始占据大约800kHz的带宽。然后将整个频段转移到传统调频（FM）频段内。该系统采用0.18微米标准CMOS工艺设计，在1.8V电压下功耗为4.7mW。
