A Crystal-Less Temperature-Independent Reconfigurable Transmitter Targeted for High-Temperature Wireless Acoustic Telemetry Applications

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A Crystal-Less Temperature-Independent Reconfigurable Transmitter Targeted for High-Temperature Wireless Acoustic Telemetry Applications
Title:
A Crystal-Less Temperature-Independent Reconfigurable Transmitter Targeted for High-Temperature Wireless Acoustic Telemetry Applications
Journal Title:
IEEE Transactions on Circuits and Systems II: Express Briefs
Keywords:
Publication Date:
01 September 2013
Citation:
Lianhong Zhou; Annamalai, M.; Jeongwook Koh; Minkyu Je; Libin Yao; Chun-Huat Heng, "A Crystal-Less Temperature-Independent Reconfigurable Transmitter Targeted for High-Temperature Wireless Acoustic Telemetry Applications," Circuits and Systems II: Express Briefs, IEEE Transactions on , vol.60, no.9, pp.542,546, Sept. 2013 doi: 10.1109/TCSII.2013.2273727 URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6573322&isnumber=6595586
Abstract:
A reconfigurable acoustic telemetry transmitter employing crystal-less temperature-independent frequency reference has been realized in 1m SOI CMOS process. The transmitter can be configured to transmit either 3-channel chirp signal or 6-channel OOK signal to provide flexibility based on channel characteristic. Different frequencies derived from the crystal-less temperature-independent frequency reference are directly modulated by input data before being combined and sent through a MFB low pass filter. The resulting 3-channel chirp signal achieves a total data rate of 60bps while the 6-channel OOK signal achieves a total data rate of 120bps. The frequency reference is realized through a FLL employing RC phase shifter with resistor temperature coefficient cancellation technique. It achieves a frequency inaccuracy of ±1.94% over the temperature range of 175°C~ 275°C. Consuming 9mW and occupying 25mm2, this work is the first reported integrated solution targeted for high temperature acoustic telemetry in oil drilling application with the highest reported data rate.
License type:
PublisherCopyrights
Funding Info:
Description:
ISSN:
1549-7747
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