Wireless Moisture Sensor Using a Microstrip Antenna | Zendy

Tatsuo Toba | Zendy; Akio Kitagawa | Zendy

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Wireless Moisture Sensor Using a Microstrip Antenna

Author(s) -

Tatsuo Toba,

Akio Kitagawa

Publication year - 2011

Publication title -

journal of sensors

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.399

H-Index - 43

eISSN - 1687-7268

pISSN - 1687-725X

DOI - 10.1155/2011/827969

Subject(s) - antenna (radio) , moisture , wireless , microstrip , wireless sensor network , microstrip antenna , materials science , acoustics , electrical engineering , electronic engineering , remote sensing , engineering , computer science , telecommunications , physics , composite material , geology , computer network

A wireless moisture sensor has been developed on the basis of the backscatter characteristic of the microstrip antenna, which works in the far field without a battery. This study aims to develop a wireless sensor with a long communication distance and to apply the wireless applications, such as monitoring the moisture in the wrapped products and surface adsorption of hydrogen peroxide in the biological isolation systems. The dropwise addition of the distilled water on the cleaning tissue is clearly detected by the measurement of the backscattered power from the sensor at the frequencies of 0.954 GHz and 2.45 GHz. The ratio of the backscattered power in two frequency bands can be used as an index to measure moisture

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