A Battery-Free Multichannel Digital Neural/EMG Telemetry System for Flying Insects
A Battery-Free Multichannel Digital Neural/EMG Telemetry System for Flying Insects
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DOI：
10.1109/tbcas.2012.2222881
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发表时间：
2012-10-01
影响因子：
5.1
通讯作者：
Reynolds, Matthew S.
中科院分区：
文献类型：
--
作者：
Thomas, Stewart J.;Harrison, Reid R.;Reynolds, Matthew S.
本文提出了一种足够小、足够轻的数字神经/肌电遥测系统，可以记录飞行中的昆虫。实测飞行包重量仅为 38 毫克。该系统包括一个单芯片遥测集成电路 (IC)，采用射频功率收集实现无电池操作，并通过 UHF (902-928 MHz) 频段内的调制反向散射进行通信。片上 11 位 ADC 以 26.1 kSps 的采样率数字化 10 个神经通道，以 1.63 kSps 的采样率数字化 4 个 EMG 通道，并将这些数据无线遥测到基站。配套基站收发器包括一个输出功率为 +36 dBm (4 W) 的 RF 发射器，用于为遥测 IC 无线供电；以及一个数字接收器，其灵敏度为 -70 dBm，在 5.0 Mbps 下实现 10(-5) BER，用于接收来自遥测 IC 的数据流。遥测芯片采用商用 0.35 μm 4M1P（4 金属，1 多晶）CMOS 工艺制造。该芯片尺寸为 2.36 X 1.88 mm，厚度为 250 μm，并通过引线键合到尺寸为 4.6 X 6.8 mm 的柔性电路组件中。
This paper presents a digital neural/EMG telemetry system small enough and lightweight enough to permit recording from insects in flight. It has a measured flight package mass of only 38 mg. This system includes a single-chip telemetry integrated circuit (IC) employing RF power harvesting for battery-free operation, with communication via modulated backscatter in the UHF (902-928 MHz) band. An on-chip 11-bit ADC digitizes 10 neural channels with a sampling rate of 26.1 kSps and 4 EMG channels at 1.63 kSps, and telemeters this data wirelessly to a base station. The companion base station transceiver includes an RF transmitter of +36 dBm (4 W) output power to wirelessly power the telemetry IC, and a digital receiver with a sensitivity of -70 dBm for 10(-5) BER at 5.0Mbps to receive the data stream from the telemetry IC. The telemetry chip was fabricated in a commercial 0.35 mu m 4M1P (4 metal, 1 poly) CMOS process. The die measures 2.36 X 1.88 mm, is 250 mu m thick, and is wire bonded into a flex circuit assembly measuring 4.6 X 6.8 mm.