Surface Acoustic Wave Pulsed-Correlator Transceiver for Aerospace Applications

    Authors

    D. C. Malocha; B. Fisher; R. Youngquist; A. Weeks;M. Gallagher

    Comments

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    Abbreviated Journal Title

    IEEE Sens. J.

    Keywords

    Aerospace; correlator; matched filter; orthogonal; sensor; signal to; noise ratio; surface acoustic wave; transceiver; wireless; SAW RFID TAGS; SENSORS; DEVICE; Engineering, Electrical & Electronic; Instruments & Instrumentation; Physics, Applied

    Abstract

    This paper will present current efforts on wireless passive surface acoustic wave (SAW) sensor transceiver development for aerospace applications. Our group's SAW sensor work has been sponsored by NASA for the past ten years in efforts to develop wireless sensing for ground base and space exploration in extreme environments. The devices are radiation hard and work from cryogenic to several hundred degrees centigrade with standard device processing. The focus of this paper will be on a synchronous, pulsed correlator transceiver for interrogation of SAW delay-line sensors. The 915-MHz system has a bandwidth of 15 MHz and uses a pulsed noise-generated signal of 1-mu s duration. The design principles, system analysis, and receiver measurements are given. The prediction of signal-to-noise ratio versus range is shown for given system parameters. The system development leading to the first testing of SAW liquid level sensors at NASA KSC will be discussed.

    Journal Title

    Ieee Sensors Journal

    Volume

    14

    Issue/Number

    11

    Publication Date

    1-1-2014

    Document Type

    Article

    Language

    English

    First Page

    3775

    Last Page

    3781

    WOS Identifier

    WOS:000346963700006

    ISSN

    1530-437X

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