A 915 MHz SAW Sensor Correlator System

    Authors

    N. Y. Kozlovski; D. C. Malocha;A. R. Weeks

    Comments

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    Abbreviated Journal Title

    IEEE Sens. J.

    Keywords

    Code-division multiple-access (CDMA); correlator; interrogator; orthogonal frequency coding (OFC); passive; sensor; spread spectrum; surface-acoustic-wave (SAW); wireless; Engineering, Electrical & Electronic; Instruments & Instrumentation; Physics, Applied

    Abstract

    Previous work has been presented on passive wireless surface-acoustic-wave (SAW) sensors using the orthogonal frequency coding (OFC) technique (Malocha et al., Proc. Int. Soc. Opt. Eng. (SPIE), Aug. 23-27, 2004, vol. 2, pp. 1082-1085), Pavlina et al., Proc. IEEE Int. Conf. RFID, 2009, pp. 110-115). This paper will present a SAW sensor correlator system and its key operational parameters. Description of the radio frequency (RF) transceiver system and the OFC SAW temperature sensors is provided for parameter characterization. The system is based on a software radio approach and an analysis of the analog-to-digital converter (ADC) parameters and receiver noise in temperature extraction is presented. Initial experimental results for a four-sensor system operating over a 280 degrees C range are given.

    Journal Title

    Ieee Sensors Journal

    Volume

    11

    Issue/Number

    12

    Publication Date

    1-1-2011

    Document Type

    Article

    Language

    English

    First Page

    3426

    Last Page

    3432

    WOS Identifier

    WOS:000301878500032

    ISSN

    1530-437X

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