Humidity passive sensors based on UHF RFID using cork dielectric slabs

被引：0

作者：

Goncalves, Ricardo ^{[1
]}

Pinho, Pedro ^{[2
]}

Carvalho, Nuno Borges ^{[1
]}

Tentzeris, Manos M. ^{[3
]}

机构：

[1] Univ Aveiro, Inst Telecomunicacoes, DETI, Aveiro, Portugal

[2] Inst Super Engn Lisboa, Inst Telecomunicacoes, ADEETC, Lisbon, Portugal

[3] Georgia Inst Technol, GEDC, Atlanta, GA 30332 USA

来源：

2015 9TH EUROPEAN CONFERENCE ON ANTENNAS AND PROPAGATION (EUCAP) | 2015年

关键词：

RFID; cork substrate; humidity sensor;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper we show the design of passive UHF RFID tag antenna on cork substrate. Due to the cork sensitivity to humidity changes, we can use the developed sensor to sense changes in the relative humidity of the environment, without the need for batteries. The antenna is built using inkjet printing technology, which allows a good accuracy of the design manufacturing. The sensor proved usable for humidity changes detection with a variation of threshold power from 11 to 15 dB between 60 and near 100% humidity levels. Presenting, therefore, reading ranges between 3 to 5 meters.

引用

页数：4

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