Smart Mater. Struct. volume 22, issue 8, P085009 2013 DOI: 10.1088/0964-1726/22/8/085009 View full text
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Xiaohua Yi, Chunhee Cho, James Cooper, Yang Wang, Manos M Tentzeris, Roberto T Leon

Abstract: This research investigates a passive wireless antenna sensor designed for strain and crack sensing. When the antenna experiences deformation, antenna shape changes, causing shift in electromagnetic resonance frequency of the antenna. A radio frequency identification (RFID) chip is adopted for antenna signal modulation, so that a wireless reader can easily distinguish backscattered sensor signal from unwanted environmental reflections. The RFID chip captures its operating power from interrogation electromagneti…

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