Spread Spectrum Techniques for Wirelessly Interrogable Passive SAW Sensors

Alfred Pohl, Gerald Ostermayer, Leonhard Reindl, Franz Seifert

Research output: Chapter in Book/Report/Conference proceedingsConference contributionpeer-review

29 Citations (Scopus)

Abstract

Recently surface acoustic wave (SAW) sensors for temperature, pressure, strain, etc. were investigated and tested. They use the change in SAW time delay due to the quantity to be measured. Increasing interest was initiated by the possibility of wireless readout. It is shown here, that the well known spread spectrum techniques (chirp impulse compression, CDMA, etc.) allows an increase of both, sensitivity and accuracy of measurement and a discrimination of several sensors simultaneously interrogated. Some applications (temperature measurement with mK resolution, coded sensors) are demonstrated. We show some mathematical simulations and preliminary experimental results.

Original languageEnglish
Title of host publicationProceedings ISSSTA 1996
Pages730-734
Number of pages5
DOIs
Publication statusPublished - 1996
EventIEEE International Symposium on Spread Spectrum Techniques & Applications - Mainz, Germany
Duration: 22 Sep 199625 Sep 1996

Conference

ConferenceIEEE International Symposium on Spread Spectrum Techniques & Applications
Country/TerritoryGermany
CityMainz
Period22.09.199625.09.1996

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