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Dual-Band Band-Stop Filter using Multiple Hexagonal Microstrip Line for Chipless RFID Sensor
(2023-01-01)
Suwalak, Rattapong
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Lertsakwimarn, Kittima
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Lertwiriyaprapa, Titipong
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Phongcharoenpanich, Chuwong
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Torrungrueng, Danai
The dual-band band-stop filter using a hexagonal-shape microstrip line is presented in this paper. The chipless RFID with the band-stop filter used to determine the relative permittivity of material under test and identify characteristic based on the unique responded signal from the chipless RFID sensor. This paper proposed the multiple microstrip line structure with a quarter-wavelength transformer to generate an identification (ID) code, i.e., ID-01, ID-10, and ID-11 at the center frequency of 2.2 GHz and 2.7 GHz. From the results, the proposed chipless RFID sensor can be identified and determined the relative permittivity of the LWC.
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Dual-Band Band-Stop Filter for Chipless RFID Sensor in a Dielectric Constant Determination
(2022-01-01)
Suwalak, Rattapong
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Phaebua, Kittisak
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Lertwiriyaprapa, Titipong
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Phongcharoenpanich, Chuwong
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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
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Phaebua, Kittisak
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Phongcharoenpanich, Chuwong
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Lertwiriyaprapa, Titipong
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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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Curved meander line resonators for chipless RFID sensors
(2019-09-01)
Suwalak, Rattapong
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Phongcharoenpanich, Chuwong
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Akkaraekthalin, Prayoot
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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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Chipped and chipless RFID sensors for quality monitoring of light weight concrete using the radar equation
(2016-09-06)
Suwalak, Rattapong
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Phongcharoenpanich, Chuwong
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Torrungrueng, Danai
Chipped and chipless RFID (Radio frequency identification) sensors for quality monitoring of light weight concrete (LWC) using the radar equation are presented. In this paper, a printed loop tag with a meander-line is employed as a chipped RFID sensor and a dual printed perpendicular square loop tag is employed as a chipless RFID sensor. The optimum parameters of the proposed RFID sensors are obtained using the CST Microwave Studio program. Both RFID sensors with/without IC chip are used to improve the accuracy of dielectric material determination. In addition, the relation between the read range (R<inf>max</inf>) and the real part of dielectric constant (<inf>r</inf>) is studied. It is found that it can be used to determine the dielectric constant of LWC.
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Dielectric material determination using the radar equation in RFID sensor applications
(2016-03-07)
Suwalak, Rattapong
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Phongcharoenpanich, Chuwong
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Torrungrueng, Danai
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Akkaraekthalin, Prayoot
A radar-cross section (RCS) of passive printed tags in a radio frequency identification (RFID) is presented to determine a dielectric constant of a material under test (MUT). In this paper, a printed loop tag with a meander-line is employed as an RFID sensor. The optimum parameters of the proposed RFID sensor are obtained using the CST Microwave Studio program. This paper employs two RFID sensors with different RCS to improve the accuracy of dielectric material determination. The relation between the read range (Rmax) and the real part of dielectric constant (?r) can be used to determine the dielectric constant of MUT.
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A radar-cross section of a passive tag on dielectric material in an RFID sensor application
(2015-08-17)
Suwalak, Rattapong
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Phongcharoenpanich, Chuwong
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Torrungrueng, Danai
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Akkaraekthalin, Prayoot
This paper is mainly present to a radar-cross section (RCS) of a passive tag in a radio frequency identification (RFID) sensor application. To determine qualities of a dielectric material under test (MUT) with a non-destructive testing (NDT) technique, a proposed meander-line dipole tag antenna is employed as a RFID sensor. The design and optimum parameters of the proposed RFID sensor are obtained using the CST Microwave Studio program. In this paper, instead of focusing on the scalar backscattered power based on the Friis transmission equation, we are also studying the RCS range equation to utilize for improve the accuracy of determination a qualities of MUT in a RFID sensor system. Simulated results show that the characteristics of the proposed RFID sensor such as the input impedance, antenna gain, power transmission coefficient and RCS.
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Characteristics of an RFID sensor for a different number of reinforced metal bars in lossy light weight concrete
(2015-04-22)
Suwalak, Rattapong
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Phongcharoenpanich, Chuwong
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Torrungrueng, Danai
The radio frequency identification (RFID) sensor technique applied to detect a different number of reinforced metal bars in a lossy light weight concrete (LWC) is presented. The proposed dipole antenna with inductive loop is employed as an RFID sensor. A different number of reinforced metal bars are studied through the characteristics of the RFID sensor placed on LWC. Simulations are performed using the CST Microwave Studio simulation program. It is found that the reinforced metal bars in LWC have important effects to the antenna gain of the RFID sensor.
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Characteristics of specifically designed tags placed on a dielectric material
(2014-01-01)
Suwalak, Rattapong
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Phongcharoenpanich, Chuwong
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Torrungrueng, Danai
A proposed folded dipole tag antenna for a radio frequency identification (RFID) sensor system is employed to determine qualities of a material under test (MUT). In this paper, a study on the characteristics of specifically designed tags (SDTs) placed on a dielectric material with a gap is presented. The CST Microwave Studio is used to study characteristics of these SDTs in the presence of an MUT near or contact with SDTs. Simulated results show that different SDTs provide different characteristics depending on MUTs. © 2014 IEEE.
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Effects of tag location on light weight concrete for an RFID sensor application
(2012-10-02)
Suwalak, Rattapong
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Lertsakwimarn, Kittima
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Phongcharoenpanich, Chuwong
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Krairiksh, Monai
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Torrungrueng, Danai
The radio frequency identification (RFID) tags are proposed to be employed as remotely read dielectric-property sensors to determine qualities of some construction material products (CMPs); e.g., light weight concrete (LWC), mortar specimens and concrete. This paper presents a study of the characteristics of an RFID tag mounted at several locations on the LWC. The numerical simulations are performed using the CST Microwave Studio to study effects of tag, where the folded dipole with an inductive loop tag antenna is used. Results show that locations of an RFID tag on LWC affects the tag antenna characteristics such as input impedance, gain and radiation pattern. © 2012 IEEE.

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