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This paper presents a washing reliability study of passive UHF RFID textile tags with three different coating materials. The tag antennas were fabricated by brush-painting silver ink on a 100 % cotton fabric. After attaching the ICs, the ready RFID tags were fully coated with three different protective coating materials: regular textile glue, epoxy coating, and silicone rubber. The coated tags were...
In this paper, we present environmentally friendly UHF RFID tag antennas that are manufactured by inkjet printing silver nanoparticle ink on a plain paper substrate after finding the most efficient manufacturing parameters and the optimal number of printed layers. The RFID ICs in this work are attached with environmental-friendly and cost-effective conductive adhesive, and the ready RFID tags are...
Wearable passive UHF RFID tags have enormous potential in future body-centric wireless communication and sensing systems, which have countless applications for example in the welfare and health care sectors. Antenna-IC joints in these wireless components are usually the critical parts from the reliability point of view and they operate in an extremely challenging environment. In this study, we demonstrate...
In this paper, we study the wireless response and reliability of graphene-based passive UHF RFID tags in high humidity conditions. The functional graphene ink is deposited directly on cardboard substrate to fabricate the RFID tag and the tag performance is evaluated through wireless tag measurements before and after high humidity conditions. Initially the peak read range of the tag is about 2.7 meters,...
This paper presents a novel architecture of inkjet-printed passive UHF RFID based sensor tag for wireless gas (CO2) sensing. An RFID tag made with Silver (Ag) ink is loaded with carbon nanotube (CNT) ink for sensing purpose. A switch in its structure provides two modes of operation, sensor on (SON) mode and sensor off (SOFF) mode. In SON mode, the sensor tag modifies its backscatter properties in...
We outline the possibilities of 3D direct write dispensing in the manufacturing of UHF RFID tags on textile materials and present considerations regarding the process parameters to achieve high-performance tags when the antenna is deposited directly on the rough and porous textile material. We also show that it is possible to use the dispensing to form the antenna-microchip connection using conductive...
In this study, green and flexible materials (cardboard, fabric, and paper) were utilized as substrates for brush-painted silver passive UHF RFID tag antennas. These novel environmental-friendly and flexible tags achieved maximum read ranges of 8.5–12 meters, suggesting good suitability of brush-painting for the manufacturing of future green wireless devices.
Electrically conductive textiles are an enabling technology for the future wearable healthcare. In this work, we investigate the impact of antenna-fiber alignment and recurrent stretching on the performance of passive UHF RFID tags based on screen printed and conductive-fabric antennas. Our results show that on the non-uniform fibrous textiles, the antenna-fiber alignment is an important factor for...
In the rapidly evolving world of innovations and development, there is a growing need to have efficient and reliable communication systems. Wireless communication has gained great importance in recent years [1]. It has enabled the development of new wireless technologies such as auto-identification, mobile communications, global positioning, satellite, and other digital communication systems for various...
This paper presents an overview of various radio frequency identification (RFID) tag fabrication methods and briefly describes the advantages and disadvantages of each method. The purpose of this paper is to provide readers with the RFID fabrication techniques that can be applied in laboratory scale experiments. The performance results of laboratory made RFID tags based on two fabrication methods...
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