Chipless RFID Sensors Based on Multistate Coupled Line Resonators

Abdulkawi, Wazie M.; Sheta, Abdel Fattah

doi:10.1016/j.sna.2020.112025

Cited by 23 publications

(7 citation statements)

References 44 publications

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“…Several industries make use of RFID technology, especially in the production and distribution line of work as they need to be able to track and monitor their products [10]. Lately, the technology has reached a point where sensitivity and displacement can be detected up to the nanometers, and sensors have developed to a point where it has a chipless RFID tag [11]. Not only that but with the invention of 3D printing it is now even possible to 3D print composites with an embedded microchip that serves as an RFID [12].…”

Section: Analysis Of Signal Propagation In Vehicular Communications With Rfid Tagsmentioning

confidence: 99%

Analysis of Signal Propagation in Vehicular Communications with RFID Tags

2020

IJETER

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Radio-frequency identification (RFID) is a commonly used technology used in various applications such as inventory readers, body counters, marathon race tagging, and the like. The research to be performed in this paper aims to study how RFID systems can help ease traffic through the monitoring of vehicles and possibly be implemented into more advanced systems to deliver information to the masses for further use of remote monitoring and traffic management. Different sizes of RFID tags or antennas are to be tested and used to determine the efficiency of signal propagation in vehicles once the tag enters the RFID reader's range. Effectiveness will be measured by picking up signals from vehicles at the minimum radius for a lower cost. The environment will be simulated via MATLAB Simulink. The system will consist of a reader and a tag, where the reader serves as the detector, while the tag serves as the object of detection. In the simulated environment, the system will also take note of the different noises encountered in the channel which is present in real life such as multipath fading.

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Section: Analysis Of Signal Propagation In Vehicular Communications With Rfid Tagsmentioning

confidence: 99%

Analysis of Signal Propagation in Vehicular Communications with RFID Tags

2020

IJETER

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“…Planar microwave sensors can be fabricated by means of either subtractive (e.g., photoetching or milling) or additive (e.g., inkjet-printing, screen-printing, or 3D-printing) processes. Moreover, planar microwave sensors are compatible with many other technologies such as microfluidics, micromachining, textiles, etc., and can be equipped with functional films, that make these sensors of interest in applications as diverse as liquid sensing [3][4][5][6][7], bio-sensing [8,9], gas sensing [10][11][12][13][14][15][16], wearables [17,22], measurement of physical variables (such as temperature or ambient humidity [23][24][25]), etc. Nevertheless, the most canonical application of planar microwave sensors is the dielectric characterization of materials (permittivity measurements [7], [26][27][28]).…”

Section: Introductionmentioning

confidence: 99%

Microwave Humidity Sensor for Early Detection of Sweat and Urine Leakage

Su¹,

Vélez²,

Casacuberta³

et al. 2023

Preprint

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A planar microwave sensor devoted to the detection of humidity in underwear and clothes in general is proposed. The ultimate goal of the sensor is to detect the presence of liquids in fabrics, of interest to aid patients that suffer from certain pathologies, such as hyperhidrosis and enuresis. The main target in the design of the sensor, considering the envisaged application, is simplicity. Thus, the sensor operates at a single frequency, and the working principle is the variation in the mag-nitude of the transmission coefficient of a matched line loaded with an open-ended quar-ter-wavelength sensing stub resonator. The stub, which must be in contact with the so-called fabric under test (FUT), generates a notch in the transmission coefficient with a resonance frequency that depends on the humidity level of the fabric. By designing the stub with a moderately high quality factor, the variation in the resonance frequency causes a significant change in the magnitude level at the operating frequency, the resonance frequency when the sensing stub is loaded with the dry fabric, and the presence of liquid can be detected by means of an amplitude detector. A prototype device is proposed and experimentally validated.

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“…This CRFID has good RCS and Q value but has low spectral density of 1.42 bits/GHz. Additionally, another 3-bit novel CFRID with three-arm resonators for tag identification and temperature sensing introduced by authors in [5] with three different configurations. The resonator contains a coupled line section that is connected to the arms for sensing and identification purposes.…”

Section: Introductionmentioning

confidence: 99%

A Quarter-Circled Multi-Resonator for UWB Re-transmission Based Chipless RFID

Ghorbel

Hossain

Aziz

et al. 2023

J. Phys.: Conf. Ser.

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This paper introduces the design and analyses of a new planar parallel microstrip quarter-circled multi-resonator (PQMR) for the chipless radio frequency identification (CRFID) that works in ultra-wide band (UWB) frequency region. The proposed PQMR has identifying (IDing) and potential sensing capabilities to work as a tag-sensor. The PQMR works within 3.30 GHz – 6.53 GHz with a high -10dB quality-factor (Q10dB) of 692, a good spatial density of as low as 7.05 mm2/bit, very good spectral density of 7.33 bits/GHz and a coding capacity of 17 bit with one-bit sensing ability. Different combinations of coding bit streams are also extracted to show the identification ability of the proposed design. This will motivate the CRFID designers to design small and high-capacity tag- sensors for UWB applications.

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Chipless RFID Sensors Based on Multistate Coupled Line Resonators

Cited by 23 publications

References 44 publications

Analysis of Signal Propagation in Vehicular Communications with RFID Tags

Analysis of Signal Propagation in Vehicular Communications with RFID Tags

Microwave Humidity Sensor for Early Detection of Sweat and Urine Leakage

A Quarter-Circled Multi-Resonator for UWB Re-transmission Based Chipless RFID

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