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Author: search.filters.author.Phaebua, KittisakSubject: search.filters.subject.RFID sensor

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    Dual-Band Band-Stop Filter for Chipless RFID Sensor in a Dielectric Constant Determination
    (2022-01-01)
    Suwalak, Rattapong
    ;
    Phaebua, Kittisak
    ;
    Lertwiriyaprapa, Titipong
    ;
    Phongcharoenpanich, Chuwong
    ;
    Torrungrueng, Danai
    This paper presents the dual-band band-stop filter to operate with the chipless RFID tag acts as the RFID sensor for a dielectric constant determination and the identification characteristic based on the signature responded signal from the chipless RFID sensor system. The proposed dual-band filter can generate the dual-stop band of the frequency of 2.2 GHz and 2.7 GHz. The 3-bits identification (ID) i.e., ID-01, ID-10, and ID-11 are obtained from the proposed filter. In addition, the chipless RFID sensor with band-stop filter technique can be determined the dielectric constant of RT/Duroid5880, Fr4 (Glass Epoxy), and low-Temperature cofired ceramic (LTCC).
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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.