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Characterization of a Passive Telemetric System for ISM Band Pressure Sensors

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Abstract

This paper presents a passive telemetric system for ISM band pressure sensors. The passive telemetric system is consisted of an external planar spiral coil and a pressure sensor. Theoretical analysis for the principle of the telemetric technique is described. Since the sensitivity and efficiency of the telemetric system is related with the performance of the pressure sensor and external coil. The characterization of the critical parameters for the design of pressure sensor and inductive coils are presented and analyzed separately. The characteristic impedance of the system, expressed as the function of the frequency, is measured by R&S ZVA67 VNA. The Measurement results show that the resonant frequency of the pressure sensor can shift from 397.83 to 396.84 MHz with an increasing pressure from 0 to 100 mmHg. This measurement proves the work of the telemetric system and also reflects that the ISM band pressure sensor has a high pressure sensitivity of 0.92 KHz/mmHg.

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Acknowledgments

The authors thank ANSYS for the software support of HFSS.

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Authors and Affiliations

  1. Department of Electrical Engineering, University of South Carolina, Columbia, SC, 29205, USA

    Yujia Peng, B. M. Farid Rahman, TengXing Wang & Guoan Wang

  2. Department of Chemical and Life Science Engineering, Virginia Commonwealth University, Richmond, VA, 23284, USA

    Xinchuan Liu & Xuejun Wen

Authors
  1. Yujia Peng
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  2. B. M. Farid Rahman
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  3. TengXing Wang
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  4. Guoan Wang
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  5. Xinchuan Liu
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  6. Xuejun Wen
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Corresponding author

Correspondence to Guoan Wang.

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Responsible Editor: T. Xia

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Peng, Y., Rahman, B.M.F., Wang, T. et al. Characterization of a Passive Telemetric System for ISM Band Pressure Sensors. J Electron Test 30, 665–671 (2014). https://doi.org/10.1007/s10836-014-5485-1

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  • DOI: https://doi.org/10.1007/s10836-014-5485-1

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