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Author: search.filters.author.Phongcharoenpanich, ChuwongSubject: search.filters.subject.Resonator

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    Curved meander line resonators for chipless RFID sensors
    (2019-09-01)
    Suwalak, Rattapong
    ;
    Phongcharoenpanich, Chuwong
    ;
    Akkaraekthalin, Prayoot
    ;
    Torrungrueng, Danai
    This paper presents a chipless RFID sensor based on the curved meander line resonator. The sensor is designed and printed on Fr4-substrate with thickness of 0.8 mm. The resonator on the RFID sensor acts as a data bit for identification, where we use only one bit in this paper for illustration. Transmitting and receiving antennas on the RFID sensor are properly designed to sense the dielectric property of the material under test. From the results, it can operate from 1.8-2.5 GHz. The gain is 2.14 dBi at the resonant frequency of 2.28 GHz. Therefore, it can be candidate as a RFID sensor with a nondestructive testing technique.
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    Magnetic field distributions of two-slot array antenna on a concentric sectoral cylindrical resonator excited by a coupling slot
    (2008-12-01)
    Wounchoum, Phairote
    ;
    Worasawate, Denchai
    ;
    Phongcharoenpanich, Chuwong
    ;
    Krairiksh, Monai
    in this paper, the magnetic field distribution of two-slot array antenna on a concentric sectoral cylindrical resonator excited by a coupling slot is presented. The correlations between the field distributions of the antenna and the mode-based field distributions are presented. The radiation pattern, magnetic field distribution and magnitude of S11 are investigated in the terms of the length of the sectoral resonator. It shows that the TE112 mode has degenerated to the magnitude of S11 for the circumferential slot array antenna. The results provide useful information for the design of switched-beam array antenna on the concentric sectoral cylindrical resonators. ©2008 IEEE.
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    Radiation characteristics of two-slot array antenna on a concentric sectoral cylindrical resonator excited by a coupling slot
    (2007-12-01)
    Wounchoum, Phairote
    ;
    Phongcharoenpanich, Chuwong
    ;
    Worasawate, Denchai
    ;
    Krairiksh, Monai
    This paper presents the radiation characteristics of two-slot array antenna on a concentric sectoral cylindrical resonator excited by a coupling slot. The magnetic fields inside the sectoral cylindrical resonator for the first few modes are presented with sectoral angle of 60 degrees. It shows that the appropriate mode for a slot array antenna on a concentric sectoral cylindrical resonator is the TM<inf>110</inf> mode. The radiation patterns of two-slot array antenna on a concentric sectoral cylindrical resonator for single sector are illustrated. The location of the coupling slot is considered to find the appropriate radiation pattern. The results provide useful information for the design of switched-beam array antenna on the concentric sectoral cylindrical resonators.