A Battery-Free Multichannel Digital Neural/EMG Telemetry System for Flying Insects

作者：Thomas Stewart J^*; Harrison Reid R; Leonardo Anthony; Reynolds Matthew S

来源：IEEE Transactions on Biomedical Circuits and Systems, 2012, 6(5): 424-436.

DOI：10.1109/TBCAS.2012.2222881

• EMG amplifier
• neural amplifier
• wireless power
• wireless telemetry

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.

• 出版日期2012-10