scholarly journals An UHF RFID Reader Antenna with Multitag Identification for Extremely Low-Temperature Medical Systems

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Ji S. Jung ◽  
Jung N. Lee ◽  
Joung M. Kim ◽  
Jong K. Park
Keyword(s):  
Radio Frequency Identification ◽  
Symmetric Design ◽  
Uhf Rfid ◽  
Medical Systems ◽  
Power Dividers ◽  
High Isolation ◽  
The North ◽  
Reader Antenna ◽  
Frequency Identification ◽  
Two Hybrid

A radio frequency identification reader antenna having multitag identification for medical systems is presented, which consists of four PIFAs, two hybrid couplers, and four power dividers. The high isolation is achieved by the symmetric design of the antenna geometry and four power dividers, which are fed by two hybrid couplers. The experimental results show an isolation of more than 40 dB in the North American (902–928 MHz), Korean (917–923.5 MHz), and Japanese (916.7–923.5 MHz) RFID frequency bands.

scholarly journals Localization of passive UHF RFID Labels with Kalman Filter

2012 ◽  
Vol 10 ◽  
pp. 119-125 ◽  
Author(s):  
T. Nick ◽  
J. Götze
Keyword(s):  
Kalman Filter ◽  
Radio Frequency Identification ◽  
Unscented Kalman Filter ◽  
Uhf Rfid ◽  
Received Signal Strength Indicator ◽  
Localization Accuracy ◽  
Passive Uhf Rfid ◽  
Reader Antenna ◽  
Reference Tags ◽  
Frequency Identification

Abstract. Localization via Radio Frequency Identification (RFID) is frequently used in different applications nowadays. It has the advantage that next to its ostensible purpose of identifying objects via their unique IDs it can simultaneously be used for the localization of these objects. In this work it is shown how Received Signal Strength Indicator (RSSI) measurements at different antennae of a passive UHF RFID label can be combined for localization. The localization is only done based on the RSSI measurements and a Kalman Filter (KF). Because of non-linearities in the measurement function it is necessary to incorporate an Extended Kalman Filter (EKF) or an Unscented Kalman Filter (UKF) where simulations have shown that the UKF performs better than the EKF. Additionally to the selection of the filter there are different possibilities to increase the localization accuracy of the UKF: The advantages of using Reference Tags (RT) or more than one tag per trolley (relative positioning) in combination with an Unscented Kalman Filter are discussed and simulations results show that the localization error can be decreased significantly via these methods. Another possibility to increase the localization accuracy and in addition to achieve a more realistic simulation is the consideration of the angle between reader antenna and tag. Simulation results with the incorporation of different numbers of fixed antennae lead to the conclusion that this is a useful surplus in the localization.

scholarly journals Read Range Performance of Microstrip Patch Reader Antenna for UHF RFID Applications

2019 ◽  
Vol 9 (1) ◽  
pp. 3515-3519
Keyword(s):  
Radio Frequency Identification ◽  
Axial Ratio ◽  
Antenna Design ◽  
Uhf Rfid ◽  
Microstrip Patch ◽  
Rectangular Patch ◽  
Reader Antenna ◽  
Frequency Identification ◽  
Rfid Applications ◽  
Read Range

This study conducted to compare a read range performance of microstrip patch reader antenna for UHF Radio Frequency Identification (RFID) applications. The circularly polarized reader antenna described in this study are designed to be affixed the polarization mismatch problem between reader antenna and tag antenna. Two truncated at the corner of the ordinary rectangular patch antenna is designed for UHF band (919-923 MHz) which destined for Malaysian systems. Measured results show that the antenna with size of 115*115*1.6 mm have gain antenna of 5.3 dBi, satisfactory 3-dB axial-ratio and reading range of 2m. Read range measurement results of the reader antenna design and tags antenna with the reader are observed and analysed to validate the practical performance. The reader antenna design delivered in this study areappropriate to UHF RFID applications.

scholarly journals An Action Classification Method for Forklift Monitoring in Industry 4.0 Scenarios

Sensors ◽  
2021 ◽  
Vol 21 (15) ◽  
pp. 5183
Author(s):  
Andrea Motroni ◽  
Alice Buffi ◽  
Paolo Nepa ◽  
Mario Pesi ◽  
Antonio Congi
Keyword(s):  
Radio Frequency Identification ◽  
Classification Method ◽  
Rfid Tags ◽  
Cyber Physical System ◽  
Rfid Technology ◽  
Uhf Rfid ◽  
Action Classification ◽  
Efficient Management ◽  
Reader Antenna ◽  
Frequency Identification

The I-READ 4.0 project is aimed at developing an integrated and autonomous Cyber-Physical System for automatic management of very large warehouses with a high-stock rotation index. Thanks to a network of Radio Frequency Identification (RFID) readers operating in the Ultra-High-Frequency (UHF) band, both fixed and mobile, it is possible to implement an efficient management of assets and forklifts operating in an indoor scenario. A key component to accomplish this goal is the UHF-RFID Smart Gate, which consists of a checkpoint infrastructure based on RFID technology to identify forklifts and their direction of transit. This paper presents the implementation of a UHF-RFID Smart Gate with a single reader antenna with asymmetrical deployment, thus allowing the correct action classification with reduced infrastructure complexity and cost. The action classification method exploits the signal phase backscattered by RFID tags placed on the forklifts. The performance and the method capabilities are demonstrated through an on-site demonstrator in a real warehouse.

scholarly journals A Compact RFID Reader Antenna for UHF Near-Field and Far-Field Operations

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Lai Xiao zheng ◽  
Xie Zeming ◽  
Cen Xuanliang
Keyword(s):  
Radio Frequency Identification ◽  
Near Field ◽  
Split Ring Resonator ◽  
Impedance Bandwidth ◽  
Far Field ◽  
Uhf Rfid ◽  
Linearly Polarized ◽  
Reader Antenna ◽  
Frequency Identification ◽  
Linearly Polarized Radiation

A compact loop antenna is presented for mobile ultrahigh frequency (UHF) radio frequency identification (RFID) application. This antenna, printed on a 0.8 mm thick FR4 substrate with a small size of 31 mm × 31 mm, achieves good impedance bandwidth from 897 to 928 MHz, which covers USA RFID Band (902–928 MHz). The proposed loop configuration, with a split-ring resonator (SRR) coupled inside it, demonstrates strong and uniform magnetic field distribution in the near-field antenna region. Its linearly polarized radiation pattern provides available far-field gain. Finally, the reading capabilities of antenna are up to 56 mm for near-field and 1.05 m for far-field UHF RFID operations, respectively.

scholarly journals Near Field UHF RFID Antenna System Enabling the Tracking of Small Laboratory Animals

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Luca Catarinucci ◽  
Riccardo Colella ◽  
Luca Mainetti ◽  
Vincenzo Mighali ◽  
Luigi Patrono ◽  
...  
Keyword(s):  
Radio Frequency Identification ◽  
Tracking System ◽  
Near Field ◽  
Antenna System ◽  
Laboratory Animals ◽  
Uhf Rfid ◽  
Wide Range ◽  
Reader Antenna ◽  
Frequency Identification ◽  
Received Signal Strength Indication

Radio frequency identification (RFID) technology is more and more adopted in a wide range of applicative scenarios. In many cases, such as the tracking of small-size living animals for behaviour analysis purposes, the straightforward use of commercial solutions does not ensure adequate performance. Consequently, both RFID hardware and the control software should be tailored for the particular application. In this work, a novel RFID-based approach enabling an effective localization and tracking of small-sized laboratory animals is proposed. It is mainly based on a UHF Near Field RFID multiantenna system, to be placed under the animals’ cage, and able to rigorously identify the NF RFID tags implanted in laboratory animals (e.g., mice). Once the requirements of the reader antenna have been individuated, the antenna system has been designed and realized. Moreover, an algorithm based on the measured Received Signal Strength Indication (RSSI) aiming at removing potential ambiguities in data captured by the multiantenna system has been developed and integrated. The animal tracking system has been largely tested on phantom mice in order to verify its ability to precisely localize each subject and to reconstruct its path. The achieved and discussed results demonstrate the effectiveness of the proposed tracking system.

scholarly journals Longest-Range UHF RFID Sensor Tag Antenna for IoT Applied for Metal and Non-Metal Objects

Sensors ◽  
2019 ◽  
Vol 19 (24) ◽  
pp. 5460 ◽  
Author(s):  
Franck Kimetya Byondi ◽  
Youchung Chung
Keyword(s):  
Wireless Sensor Networks ◽  
Radio Frequency Identification ◽  
High Frequency ◽  
Wireless Sensor ◽  
The Internet ◽  
Uhf Rfid ◽  
Rfid Tag ◽  
Frequency Identification ◽  
The Internet Of Things ◽  
Read Range

This paper presents a passive cavity type Ultra High Frequency (UHF) Radio Frequency Identification (RFID) tag antenna having the longest read-range, and compares it with existing long-range UHF RFID tag antenna. The study also demonstrates mathematically and experimentally that our proposed longest-range UHF RFID cavity type tag antenna has a longer read-range than existing passive tag antennas. Our tag antenna was designed with 140 × 60 × 10 mm3 size, and reached 26 m measured read-range and 36.3 m mathematically calculated read-range. This UHF tag antenna can be applied to metal and non-metal objects. By adding a further sensing capability, it can have a great benefit for the Internet of Things (IoT) and wireless sensor networks (WSN).

Structure optimization of an ultrahigh frequency radio frequency identification tag thread based on the normal mode helix dipole antenna

2020 ◽  
pp. 004051752094890
Author(s):  
Yong Zhang ◽  
Jiyong Hu ◽  
Xiong Yan ◽  
Xudong Yang
Keyword(s):  
Resonant Frequency ◽  
Normal Mode ◽  
Radio Frequency Identification ◽  
Dipole Antenna ◽  
Uhf Rfid ◽  
Simulation Experiments ◽  
Rfid Tag ◽  
Helical Pitch ◽  
Frequency Identification ◽  
Linear Dipole

This paper describes the design of a novel ultrahigh frequency radio frequency identification (UHF RFID) tag thread that mainly consisted of the common yarn and the normal mode helix dipole antenna. The linear dipole antenna for the UHF RFID tag thread was too long to miniaturize the tag. In order to maximize the read performance and miniaturize the size of the tag, the basic antenna structure parameters, such as the helical pitch and single arm length, were optimized by analyzing the radiation parameter S11 of the normal mode helix dipole antenna based on simulation experiments. The simulation experiments started with optimizing the single arm length to obtain the minimum of the S11 parameter at resonant frequency, then the helical pitch was further optimized to limit the resonant frequency to the UHF range. The simulation results showed the resonant frequency rises with an increase of helical pitch and declines with an increase of single arm length. Furthermore, a series of UHF RFID tag threads with good performance from the simulation cases were prepared, and the performance of the optimized tag was validated. Generally, the UHF RFID tag thread with optimized helix dipole antenna could reduce the axial length of the tag by 57% and improve the reading range by 500%, and its performance was greatly superior to that of the UHF RFID tag thread with the classical linear dipole antenna.

scholarly journals Performance Evaluation of a Novel Animals Tracking System based on UHF RFID Technology

2013 ◽  
Vol 9 (1) ◽  
pp. 4 ◽  
Author(s):  
Luca Catarinucci ◽  
Luigi Patrono
Keyword(s):  
Radio Frequency Identification ◽  
Tracking System ◽  
Near Field ◽  
Uhf Rfid ◽  
Wide Range ◽  
Frequency Identification ◽  
Set Up ◽  
Received Signal Strength Indication ◽  
Localization And Tracking ◽  
Localization Data

The adoption of solutions based on Radio Frequency IDentification technology in a wide range of contexts is a matter of fact. In many situations, such as the tracking of small-size living animals, the straightforward use of commercial systems does not ensure adequate performance. Consequently, both the RFID hardware and the software control platform should be tailored for the particular application. In this work, the specific requirements of Near Field Ultra High Frequency RFID reader antennas suitable for small-size animal localization and tracking are identified and a control system in a LabVIEW environment is designed. Afterwards, both hardware and software solutions have been implemented and validated. In particular, an algorithm based on the measured Received Signal Strength Indication, in order to obtain precise localization data, was developed and validated. Finally, the set-up of a first working prototype involving built-in-lab reader antennas has been completed and tested. The achieved results prove the effectiveness of the proposed tracking system.

System for the Management of Raw Materials Based on RFID Technology

2013 ◽  
Vol 371 ◽  
pp. 797-801 ◽  
Author(s):  
Octavian Ionescu ◽  
Gabriela Cristina Ionescu
Keyword(s):  
Production Process ◽  
Radio Frequency Identification ◽  
High Frequency ◽  
Raw Materials ◽  
Material Balance ◽  
Storage Tanks ◽  
Rfid Technology ◽  
Uhf Rfid ◽  
Frequency Identification ◽  
Radio Frequency Identification Device

The system presented in this article has been developed in order to solve several problems occurred during uploading raw materials in the storage tanks of a dry mix mortars plant and to keep an accurate material balance of raw materials introduced in the production process. The proposed approach was to implement a UHF, RFID (Ultra High Frequency, Radio Frequency Identification Device) system consisting of tags on the intake of the uploading pipes and outlets of the transportation trucks and a UHF, RFID Writer/Reader with four antennas in the proximity of uploading and to create an associate database for tracking the uploaded materials. The newly developed system has been successfully operationally tested in a dry mix mortar plant nearby Ploiesti.

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