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Author: search.filters.author.Phongcharoenpanich, ChuwongSubject: search.filters.subject.Dielectric material

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    Chipless RFID sensing for dielectric property of light weight concrete
    (2021-05-19)
    Suwalak, Rattapong
    ;
    Phaebua, Kittisak
    ;
    Phongcharoenpanich, Chuwong
    ;
    Lertwiriyaprapa, Titipong
    ;
    Pathoumvanh, Somsanouk
    This paper presents a passive chipless RFID tag (Electromagnetic sensor) based on the modified printed monopole antenna with a frequency filter technique. The proposed chipless RFID sensor is the wireless sensor technology with the nondestructive technique (NDT) testing. This proposed RFID tag is designed to obtain both determination and identification (ID) properties for a sensor application. To determine the dielectric constant of MUT under test, the circular monopole tag antenna is modified using adding the elliptical shape to achieve the wideband operating frequency. Moreover, this sensor is used the stripline frequency filter technique to obtain the 1-bit ID at the frequency of 2.77 GHz. The CST Microwave Studio simulator program uses to design and optimize the passive chipless RFID parameters. Simulated results show the proposed chipless RFID sensor can identify and determine the dielectric property of the LWC under test.
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    Dual-band chipless RFID sensor for a material quality monitoring application
    (2017-01-17)
    Suwalak, Rattapong
    ;
    Lertsakwimarn, Kittima
    ;
    Phongcharoenpanich, Chuwong
    ;
    Torrungrueng, Danai
    The dual-band chipless RFID sensor is proposed to employ as a wireless material quality monitoring application. A printed perpendicular rectangular loop tag and a printed concentric rectangular loop tag are designed and optimized using the CST Microwave Studio program. The chipless RFID sensors are located on a material surface to determine qualities of a material under test. From numerical results, it is found that the proposed dual-band chipless RFID-sensor has a significant different radar cross section (RCS) compared with the single-band one. Therefore, both RFID sensors can be used together in the material quality monitoring system to improve the accuracy.