Development of compact inductive coupled meander line RFID tag for near-field applications (original) (raw)

2016, International Journal of Microwave and Wireless Technologies

The development of compact radio frequency identification (RFID) tag is the key requirement for wireless tracking of precious small size goods/packages in transport. A design of compact meander line tag antenna having inductive coupling feed is presented for RFID system operating at ultra high frequency band of865–867 MHz. The size of the proposed tag antenna is43 mm × 10 mm, and is designed using Higgs 4 IC chip (made Alien Technology, USA) having impedance of20.55− j191.45 Ωat centre frequency866 MHz.The antenna characteristics such as impedance, radiation pattern, bandwidth, and effect of ground on gain and tag size are analyzed and found to closely match with the simulated values. The observed value of reading range varies from87.5 to 35 cmsdepending on mounting on non-metal and metal packages, respectively.

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A Compact Meander Line Uhf Rfid Antenna for Passive Tag Applications

Progress In Electromagnetics Research M

In this article, a meander line dipole antenna for radio frequency identification (RFID) tag is presented. The loaded meander antenna has a simple meander line structure with a spiral inductor at the end for size miniaturization, a T-match structure, and an inductively coupled parasitic element for impedance matching with the tag IC. The antenna is designed to operate in North American UHF RFID frequency band of 915 MHz. The size of the proposed tag antenna is 50 mm × 12 mm and has good impedance matching with Alien Higgs IC chip of 13.5 − j111Ω at the desired frequency band. The proposed tag antenna provides omnidirectional radiation pattern with a maximum read range of 3.5 m at an effective isotropic radiated power of 4 W. Simulation results are in good agreement with measurement results.

Electromagnetic analysis of UHF near-field RFID tag antenna

General Assembly and Scientific Symposium, 2011

In this paper, the performance of Near-Field UHF RFID systems is investigated by means of electromagnetic analyses. A novel antenna is presented for ultra high frequency (UHF) near-field radio frequency identification (RFID) applications. The reactance component of tag antenna considered chip impedance (-193j) is conjugated and matched for maximum power transmission. The antenna is fabricated by using Polyester (PET) dielectric

Radio Frequency Identification (RFID) Tag Antenna Design at Ultra High Frequency (UHF) Band

Indian Journal of Science and Technology, 2017

This project is to design a Radio Frequency Identification (RFID) high sensitivity tag antenna which operates at UHF frequency band in Malaysia between 919 MHz to 923 MHz. RFID is a type of wireless and radio wave technology that allows for a small RFID chip to be embedded in certain physical object and uniquely identified by an RFID reader. The major contempilation is that the tag antennas will have longer read ranges but in small sizes. While reducing the size of these antennas cause gain decrease will cause reduction in the read range. Another challenge in designing passive RFID tags antennas is to have the highest impedance matching to achieve high efficiency and low effects of the electromagnetic environment. This project was providing two methods to overcome those problems. Firstly, construct meander line structure to reduce the antenna size and design proposed tag antenna with T-match circuit to achieve conjugate matching with the application-specific integrated circuit so that the reading range of the RFID tag is greatly enhanced. On the other hand, the result show the tag directivity and gain was meets the RFID tag design requirements. This project is useful to be implemented in the RFID industry based on today's technology.

RFID tag antenna with a meandered dipole and inductively coupled feed

This paper presents tag antennas with an inductively coupled feed structure for the RFID application in the UHF band. The designed antennas consist of the rectangular loop for feeding and meandered dipole. We estimate the maximum bandwidth of the designed antenna using the approximate calculation and the calculated results are verified by measuring the read range of the tag antennas as a function of frequency. The read range of the designed RFID tag is approximately from 2.5m to 4m in air.

A Miniature RFID Antenna at UHF Band using Meander-Line Technique

International Journal of Electrical and Computer Engineering (IJECE), 2018

This paper displays a new design of a small antenna proposed for radio-frequency identification (RFID) applications in the UHF band (ultra-high frequency). Our antenna is constituted of two rectangular patches linked together with a meander line. Using this technique reduction in antenna size of equal to 62% with respect to the conventional antenna was achieved. The antenna has a simple structure and small antenna size of 60 x 74mm 2 or 0.184 λ0 x 0.226 λ0. It has been fabricated on a low-cost FR4 substrate and measured to validate the simulation performances. The measured bandwidth is around 54.4 MHz (889.3-943.7 MHz) with reflection coefficient less than 10 dB, which covers all of the American RFID band (902-928 MHz), Chinese RFID band (920.5-924.5 MHz), Korea Republic and Japan RFID band (917-923.5 MHz). The design and simulations have been effected by electromagnetic simulators HFSS and CST microwave studio. A good accord is getting between the simulated and measured results. This antenna is intended for the reader of RFID applications. 1. INTRODUCTION Radio-frequency identification, well known as RFID, is an intelligent technology system that is highly efficient, flexible and well appropriate for operations automatic. RFID is an identification method that employs radio frequency waves to capture data held in gadgets titled RFID tags. It presents various advantages compared with other identification technologies for instance barcodes. It is a contactless technology, which makes the automatic interchange of information rapid and extra efficient. It can operate under a diversity of environmental conditions, allows storing a quantity of encrypted and secured data. RFID technology employs electromagnetic fields to identify, monitor and trail objects, animals or people remotely utilize radio waves [1], [2]. An RFID radio frequency identification system typically comprises of two entities that communicate together, a smart tag and a reader. The tag linked with the element to be identified who is able to respond to a request from a reader. The latter has the task of identifying the label. It sends an electromagnetic wave to the element to be recognized. As a response, the reader obtains the information sent back by the tag. RFID systems can be designed to operate in low-frequency (BF) to the super-high-frequency band (SHF). This operation has been standardized to keep away from any interference with another electromagnetic device [3]. The frequency bands allocated to RFID applications are a low-frequency band

A High-Gain Passive UHF-RFID Tag with Increased Read Range

Sensors, 2016

In this work, a passive ultra-high frequency radio-frequency identification UHF-RFID tag based on a 1.25 wavelengths thin dipole antenna is presented for the first time. The length of the antenna is properly chosen in order to maximize the tag read range, while maintaining a reasonable tag size and radiation pattern. The antenna is matched to the RFID chip by means of a very simple matching network based on a shunt inductance. A tag prototype, based on the Alien Higgs-3 chip, is designed and fabricated. The overall dimensions are 400 mmˆ14.6 mm, but the tag width for most of its length is delimited by the wire diameter (0.8 mm). The measured read range exhibits a maximum value of 17.5 m at the 902-928 MHz frequency band. This represents an important improvement over state-of-the-art passive UHF-RFID tags.

Loop feed meander-line Antenna RFID tag design for UHF band

2014 XXXIth URSI General Assembly and Scientific Symposium (URSI GASS), 2014

A loop feed meander-line Antenna (LFMLA) RFID tag on a relatively low dielectric constant substrate operates on the European UHF band 865-868 MHz is presented. The tag modeling is analyzed using two different electromagnetic simulator HFSS and CST. A prototype tag antenna is constructed and measured for validation .The input impedance of the proposed antenna is verified against the simulated data results, the measured and simulated results are found to be in good agreement. The compact size tag antenna shows excellent impedance matching to the typical input impedance of a RFID integrated circuit chip and a significant improvement in reading range up to 5 meters.

IRJET- Design of Antenna for Near-Field and Far-Field UHF RFID Applications

IRJET, 2021

Radio Frequency Identification (RFID) is the wireless non-contact use of radio frequency waves to transfer data. Tagging items with RFID tags allows users to automatically and uniquely identify and track inventory and assets. This work deals with the design construction of a compact Microstrip antenna which has a high Gain along with a sufficient Return Loss (S11) and Impedance bandwidth that will work for India RFID band (860 MHz-960 MHz) ISM band RFID Applications. The antenna has been designed and simulated on a Fire Resistant FR4 Epoxy substrate. The antenna has overall dimensions of 34 x 46 x 1.5 mm3 and has a Microstrip line feed matched to 50Ω. The impedance bandwidth achieved by the final design is about 49 MHz at the 857MHz-1000MHz ISM band and has an S11 about-32 dB. The final design has a very good radiation pattern. The antenna has been designed using Ansoft High Frequency Simulation Software (HFSS). Software and hardware results are similar.

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