POLYVINYL-ALCOHOL (PVA)-BASED RF HUMIDITY SENSOR IN MICROWAVE FREQUENCY | Zendy

Emran Md Amin | Zendy; Nemai Chandra Karmakar | Zendy; Bjørn WintherJensen | Zendy

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POLYVINYL-ALCOHOL (PVA)-BASED RF HUMIDITY SENSOR IN MICROWAVE FREQUENCY

Author(s) -

Emran Md Amin,

Nemai Chandra Karmakar,

Bjørn WintherJensen

Publication year - 2013

Publication title -

progress in electromagnetics research b

Language(s) - English

Resource type - Journals

ISSN - 1937-6472

DOI - 10.2528/pierb13061716

Subject(s) - polyvinyl alcohol , materials science , resonator , microwave , kapton , relative humidity , humidity , optoelectronics , dielectric , chipless rfid , acoustics , telecommunications , composite material , computer science , physics , meteorology , polyimide , layer (electronics)

A highly sensitive, passive relative humidity (RH) sensor using polyvinyl-alcohol (PVA) dielectric fllm is presented. For the flrst time, PVA is investigated in microwave RF sensing devices for low cost, high resolution and accurate chipless RH sensor realization. Comparative study with traditional humidity sensing Kapton polymer is presented to validate superior performance of PVA fllm. Results are presented for two difierent passive high Q resonators to validate sensing performance in wide applications. Moreover, a new sensing parameter is described to investigate sensitivity measurement through resonance frequency and Q factor variation. The RH sensor has the potential to be integrated with mm and "m-wave high frequency passive RFID for ubiquitous sensing.

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