scholarly journals Dual-Band Antenna/AMC Combination for RFID

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
M. E. de Cos ◽  
F. Las-Heras
Keyword(s):  
Radio Frequency ◽  
Radio Frequency Identification ◽  
Return Loss ◽  
Dual Band ◽  
Rfid Tags ◽  
Metallic Plate ◽  
Magnetic Conductor ◽  
Dual Band Antenna ◽  
Radiation Properties ◽  
Frequency Identification

A novel antenna/Artificial Magnetic Conductor (AMC) combination usable in dual-band Radio Frequency Identification (RFID) tags over metallic objects is presented. A compact and low thickness prototype is manufactured and characterized in terms of return loss and radiation properties in an anechoic chamber both alone and on a metallic plate. The performance exhibited by the presented antenna/AMC prototype is proper for RFID tags on both metallic and nonmetallic objects.

scholarly journals Dual-band Dipole Antenna for 2.45 GHz and 5.8 GHz RFID Tag Application

2015 ◽  
Vol 4 (1) ◽  
pp. 31 ◽  
Author(s):  
Y. Yu ◽  
J. Ni ◽  
Z. Xu
Keyword(s):  
Radio Frequency ◽  
Radio Frequency Identification ◽  
Input Impedance ◽  
Return Loss ◽  
Dipole Antenna ◽  
Dual Band ◽  
Radiation Characteristics ◽  
Rfid Tag ◽  
Microstrip Patch ◽  
Frequency Identification

In this paper, a dual-band dipole antenna for passive radio frequency identification (RFID) tag application at 2.45 GHz and 5.8 GHz is designed and optimized using HFSS 13. The proposed antenna is composed of a bent microstrip patch and a coupled rectangular microstrip patch. The optimal results of this antenna are obtained by sweeping antenna parameters. Its return losses reach to -18.7732 dB and -18.2514 dB at 2.45 GHz and 5.8 GHz, respectively. The bandwidths (Return loss <=-10 dB) are 2.42~2.50 GHz and 5.77~5.82 GHz. And the relative bandwidths are 3.3% and 0.9%. It shows good impedance, gain, and radiation characteristics for both bands of interest. Besides, the input impedance of the proposed antenna may be tuned flexibly to conjugate-match to that of the IC chip.

scholarly journals Compact Dual-Band Circularly Polarized Stacked Patch Antenna for Microwave-Radio-Frequency Identification Multiple-Input-Multiple-Output Application

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Enze Zhang ◽  
Andrea Michel ◽  
Paolo Nepa ◽  
Jinghui Qiu
Keyword(s):  
Radio Frequency ◽  
Radio Frequency Identification ◽  
Patch Antenna ◽  
Multiple Input Multiple Output ◽  
Dual Band ◽  
Circularly Polarized ◽  
Multiple Input ◽  
Input Multiple Output ◽  
Frequency Identification ◽  
Stacked Patch Antenna

A compact, low-profile, two-port dual-band circularly polarized (CP) stacked patch antenna for radio-frequency identification (RFID) multiple-input-multiple-output (MIMO) readers is proposed, which employs the shared-aperture technique. The proposed antenna adopts a 1.524 mm thickness Rogers Ro4350b substrate with relative permittivity of 3.48. Two pairs of isolated ports are working at two microwave- (MW-) RFID bands (2.4–2.485 GHz and 5.725–5.875 GHz) with high port isolation of 25 dB and 30 dB, respectively. A shared metal slot layer is designed to separate two feeding structures of the lower band and upper band for port isolation enhancement as well as saving space. Corner-truncated square slot and patch configurations have been designed to obtain CP modes. In the lower and upper MW-RFID bands, the relative impedance bandwidths are 12.2% and 5.7%, and the maximum realized gains are higher than 7.3 dBic. Moreover, two-element configurations have been combined for an RFID MIMO system that occupies a dimension of 119 mm × 119 mm × 12.9 mm. The MIMO antenna performance of envelope correlation coefficient (ECC) is lower than 0.03, and diversity gain is close to 10 dB.

Security of EPC Class-1

2013 ◽  
pp. 34-63 ◽  
Author(s):  
Pablo Picazo-Sanchez ◽  
Lara Ortiz-Martin ◽  
Pedro Peris-Lopez ◽  
Julio C. Hernandez-Castro
Keyword(s):  
Radio Frequency ◽  
Radio Frequency Identification ◽  
Radio Channel ◽  
Rfid Tags ◽  
Main Form ◽  
Electronic Product Code ◽  
Electronic Product ◽  
Class 1 ◽  
Frequency Identification ◽  
Passive Rfid

Radio Frequency Identification (RFID) is a common technology for identifying objects, animals, or people. The main form of barcode-type RFID device is known as an Electronic Product Code (EPC) and the most popular standard for passive RFID tags is Class-1 Generation-2. In this technology, the information transmitted between devices is through the air, therefore adversaries can eavesdrop these messages passed on the insecure radio channel and finally, the security of the system can be compromised. In this chapter, the authors analyze the security of EPC Class-1 Generation-2 standard, showing its security weaknesses and presenting some possible countermeasures.

Management of surgical instruments with radio frequency identification tags

2016 ◽  
Vol 29 (2) ◽  
pp. 236-247 ◽  
Author(s):  
Kaori Kusuda ◽  
Kazuhiko Yamashita ◽  
Akiko Ohnishi ◽  
Kiyohito Tanaka ◽  
Masaru Komino ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Radio Frequency Identification ◽  
Management System ◽  
Surgical Instruments ◽  
Rfid Tags ◽  
Surgical Instrument ◽  
Content Type ◽  
History Of ◽  
Frequency Identification ◽  
Identification Tags

Purpose – To prevent malpractices, medical staff has adopted inventory time-outs and/or checklists. Accurate inventory and maintenance of surgical instruments decreases the risk of operating room miscounting and malfunction. In our previous study, an individual management of surgical instruments was accomplished using Radio Frequency Identification (RFID) tags. The purpose of this paper is to evaluate a new management method of RFID-tagged instruments. Design/methodology/approach – The management system of RFID-tagged surgical instruments was used for 27 months in clinical areas. In total, 13 study participants assembled surgical trays in the central sterile supply department. Findings – While using the management system, trays were assembled 94 times. During this period, no assembly errors occurred. An instrument malfunction had occurred after the 19th, 56th, and 73th uses, no malfunction caused by the RFID tags, and usage history had been recorded. Additionally, the time it took to assemble surgical trays was recorded, and the long-term usability of the management system was evaluated. Originality/value – The system could record the number of uses and the defective history of each surgical instrument. In addition, the history of the frequency of instruments being transferred from one tray to another was recorded. The results suggest that our system can be used to manage instruments safely. Additionally, the management system was acquired of the learning effect and the usability on daily maintenance. This finding suggests that the management system examined here ensures surgical instrument and tray assembly quality.

Innovation in Field of Automatic Identification by Selected Components in the Automobile Industry

2015 ◽  
Vol 803 ◽  
pp. 223-230
Author(s):  
Peter Kolarovszki ◽  
Jiří Tengler
Keyword(s):  
Radio Frequency ◽  
Automotive Industry ◽  
Automobile Industry ◽  
Radio Frequency Identification ◽  
Special Section ◽  
Automatic Identification ◽  
Rfid Tags ◽  
Technical Equipment ◽  
Real Condition ◽  
Frequency Identification

Article provides research in field of automatic identification by selected components through radio-frequency identification technology (RFID) in conjunction with automotive industry. The ambition of our research was to achieve 100 % readability of RFID tags placed on selected component. Measurements were done at company providing signal lights for automotive industry and all results had been measured in real condition. A special section is dedicated to description of the technical equipment, used during measurements as well as their results from MySQL database.

scholarly journals Elegant System for Library Management using RFID

2018 ◽  
Vol 7 (3.1) ◽  
pp. 133
Author(s):  
D Pradeepa ◽  
R Valarmady ◽  
S G Rajasekar
Keyword(s):  
Radio Frequency ◽  
Radio Frequency Identification ◽  
Rfid Tags ◽  
Library Management ◽  
Frequency Identification ◽  
Radio Frequency Waves ◽  
Rfid Readers

Radio Frequency Identification (RFID) implies a system that exchanges the data remotely, utilizing radio frequency waves. It is programmed identification innovation. This paper is about RFID based system for library management that permits quick exchange stream and will make simple to deal with the exercises like issue and return of books from the library absent much manual intercession. This system depends on RFID readers and detached RFID tags that can store the data electronically which can be perused by the RFID readers. This system will influence clients to issue to and return of books through RFID tags simple and furthermore ascertain the comparing fine connected with the timeframe the nonappearance of the book from the library.  

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