6533b873fe1ef96bd12d58aa
RESEARCH PRODUCT
Multi-Chip RFID Antenna Integrating Shape-Memory Alloys for Detection of Thermal Thresholds
Gaetano MarroccoCecilia OcchiuzziStefano Caizzonesubject
shape memory alloybusiness.industryComputer scienceElectrical engineeringRadiofrequency Identification (RFID) shape memory alloy temperature sensorContext (language use)temperature sensorSettore ING-INF/02 - Campi ElettromagneticiChipTemperature measurementRadiation patternRadiofrequency Identification (RFID)Ultra high frequencyRFID sensor antennaRadio-frequency identificationElectrical and Electronic EngineeringAntenna (radio)businessdescription
Low-cost wireless measurement of objects' temperature is one of the greatest expectation of radiofrequency identification technology for the so many applications in cold supply-chain control and safety assessment in general. In this context, the paper proposes a dual-chip UHF tag embedding shape memory alloys (SMA) able to transform the variation of the tagged item's temperature into a permanent change of antenna radiation features. This event-driven antenna is hence able to selectively activate the embedded microchips according to the temperature above or below a given threshold. A general design methodology for the resulting two-ports tag antenna is here introduced and then applied to prototypes able to work at low (around 0°C) and high (80°C) temperatures.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-07-01 |