高密度脑微探针接口的集成超宽带发射机和天线设计

H. Bahrami, S. Mirbozorgi, L. Rusch, B. Gosselin
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引用次数: 10

摘要

本文提出并比较了两种发射机拓扑(TX1和TX2)使用不同的调制方案来提供高密度神经记录系统的高数据速率。两个发射机都使用基于边缘组合方法实现的IR-UWB。TX2采用改进的拓扑结构,在支持相同的数据速率的同时,功耗更低,占地面积更小。TX2在500mbps时的功耗也降低了35%。这两种发射机都在非调节超宽带的3.1 GHz和7 GHz子带内采用脉冲整形,以减轻生物组织内7 GHz以上传播的电磁波的高传输损耗。设计了一种植入式天线和一种外置天线,分别用作本应用中的TX和RX天线。这两款发射机都完全集成到标准的台积电0.18 μm CMOS技术中,并提供超过500 Mbps的高数据传输速率。TX1支持OOK和二进制相移键控(BPSK)调制,而TX2只支持OOK调制。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Integrated UWB Transmitter and Antenna Design for Interfacing High-Density Brain Microprobes
This paper presents and compares two transmitter topologies (TX1 and TX2) using different modulation schemes to provide high data rate in high-density neural recording systems. Both transmitters use IR-UWB implemented based on an edge combining approach. TX2, which is using an improved topology, consumes less power and uses less area than TX1, while supporting the same data rate. The power consumption is also reduced by 35% at 500 Mbps in TX2. Both transmitters employ pulse shaping within the 3.1 and 7 GHz subband of the unregulated ultra-wide band to mitigate high transmission loss of the propagated EM waves above 7 GHz inside biological tissues. An implantable antenna and an external antenna are designed for utilization as TX and RX antennas in this application, respectively. Both transmitters have been fully integrated into a standard TSMC 0.18-μm CMOS technology and provide high data transmission rate above 500 Mbps. TX1 supports OOK and binary phase shift keying (BPSK) modulations, while TX2 supports only OOK modulation.
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