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A battery-free multichannel digital neural/EMG telemetry system for flying insects.

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IEEE Transactions on Biomedical Circuits and Systems. 2012 Oct;6(5):424-36. doi: 10.1109/TBCAS.2012.2222881
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A battery-free multichannel digital neural/EMG telemetry system for flying insects. Leonardo Lab
Thomas SJ, Harrison RR, Leonardo A, Reynolds MS
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Abstract

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 5.0 Mbps to receive the data stream from the telemetry IC. The telemetry chip was fabricated in a commercial 0.35 μ m 4M1P (4 metal, 1 poly) CMOS process. The die measures 2.36 × 1.88 mm, is 250 μm thick, and is wire bonded into a flex circuit assembly measuring 4.6 × 6.8 mm.

PMID: 23853229 [PubMed - indexed for MEDLINE]

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Janelia Authors

Anthony Leonardo
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