Description

An RFID patch antenna sensor can be used to wirelessly measure the strain and/or crack on a structural surface through the shift of its electromagnetic resonance frequency. According to electromagnetic theory, the resonance frequency �R of a patch antenna has an approximately linear relationship with strain �: [Formula]

Previous design of antenna sensor with Rogers RT/duroid® 5880 substrate is sensitive to temperature change. A new RFID patch antenna sensor with thermally-stable substrate material Rogers RT/duroid® 6202 is designed and tested through both numerical simulation and laboratory experiments. A new RFID chip with much smaller footprint is adopted in the new design.

Start Date

8-14-2018 7:45 AM

End Date

8-14-2018 5:00 PM

Meeting Name

INSPIRE-UTC 2018 Annual Meeting

Department(s)

Civil, Architectural and Environmental Engineering

Comments

This material is based upon work sponsored by the INSPIRE University Transportation Center through USDOT/OST-R grant #69A3551747126. The first author is partially supported by Chinese Scholarship Council (#201406260201).

Document Type

Poster

Document Version

Final Version

File Type

text

Language(s)

English

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Aug 14th, 7:45 AM Aug 14th, 5:00 PM

Thermally-Stable Passive Antenna Sensor for Strain and Crack Monitoring

An RFID patch antenna sensor can be used to wirelessly measure the strain and/or crack on a structural surface through the shift of its electromagnetic resonance frequency. According to electromagnetic theory, the resonance frequency �R of a patch antenna has an approximately linear relationship with strain �: [Formula]

Previous design of antenna sensor with Rogers RT/duroid® 5880 substrate is sensitive to temperature change. A new RFID patch antenna sensor with thermally-stable substrate material Rogers RT/duroid® 6202 is designed and tested through both numerical simulation and laboratory experiments. A new RFID chip with much smaller footprint is adopted in the new design.