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    Wyświetlanie 1-8 z 8
    Tytuł:
    Analysis of a Square Parasitic Antenna by Using Lumped Elements
    Autorzy:
    Ferchichi, A.
    Azizi, M. K.
    Ali, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/227118.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    RFID TAG
    parasitic antenna
    Lumped element
    Opis:
    In this paper, a novel approach to design a parasitic antenna for an RFID application. This approach is based on using a parasite square patch near to a square patch. The square antenna is simulated by using HFSS and ADS and the proposed parasitic antenna is developed by using Lumped elements. This antenna can be integrated in an RFID TAG by using the electrical model of both antenna and IC. The size of antenna is 31mm*31mm*8.5mm.
    Źródło:
    International Journal of Electronics and Telecommunications; 2012, 58, 3; 279-283
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Laboratory tests on e-pellets effectiveness for ore tracking
    Autorzy:
    Błażej, R.
    Kawalec, W.
    Konieczna, M.
    Król, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/88970.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Wrocławska. Wydział Geoinżynierii, Górnictwa i Geologii. Instytut Górnictwa
    Tematy:
    RFID tag
    ore tracking
    DISIRE
    laboratory tests
    belt conveyor
    traceability
    Opis:
    Assigning transported material with a supplementary information is becoming relevant for the needs of improving the efficiency of industrial processes. In the mining industry annotating the mined ore could bring benefits due to expected decrease of the processing energy consumption and increase of productivity. DISIRE project was focused on the implementation of e-pellets for various raw material processing and transportation processes. The paper presents laboratory tests of altern ative RFID equipment for annotating ore with marked tags. Several aspects of tags traceability were investigated for the needs of the industrial tests that were eventually done in the underground mine environment. The laboratory tests results were compared with the similar tests described in the literature, that were done in the different conditions.
    Źródło:
    Mining Science; 2018, 25; 7-17
    2300-9586
    2353-5423
    Pojawia się w:
    Mining Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Antenna Design based on Meander Line Technique to be applied to RFID tag
    Autorzy:
    González, Ricardo Meneses
    Peralta, Laura Montes
    Powiązania:
    https://bibliotekanauki.pl/articles/1190179.pdf
    Data publikacji:
    2016
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    loop antenna
    meander line technique
    resonance frequency
    parasitic elements
    RFID tag antenna
    Opis:
    This work describes the design and implementation of an antenna based on meander line technique and ended in circular structures and two parasitic element acting as reflectors, in order to be applied as 915 MHz UHF RFID tag antenna. In order to determine the performance of varying design parameters on impedance, resonance frequency, radiation pattern, etc., HFSS simulation software has been used and experimental tests under an anechoic chamber have been applied. The achieved results show the feasibility of the designed antenna.
    Źródło:
    World Scientific News; 2016, 44; 35-49
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mixed Pseudo-orthogonal Frequency Coding for SAW RFID Tags
    Autorzy:
    Xu, M.
    Xiao, X.
    Yuan, Q.
    Zong, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/176715.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    SAW RFID tag
    OFC
    POFC
    Mixed-POFC
    mixed pseudo-orthogonal frequency coding
    COMSOL
    Opis:
    A mixed pseudo-orthogonal frequency coding (Mixed-POFC) structure is proposed as a new spreadspectrum technique in this paper, which employs frequency and time diversity to enhance tag properties and balances the spectrum utilization and code diversity. The coding method of SAW RFID tags in this paper uses Mixed-POFC with multi-track chip arrangements. The cross-correlation and auto correlation of Mixed-POFC and POFC are calculated to demonstrate the reduced overlap between the adjacent center frequencies with the Mixed-POFC method. The center frequency of the IDT and Bragg reflectors is calculated by a coupling of modes (COM) module. The combination of the calculation results of the Bragg reflectors shows that compared with a 7-chip POFC, the coding number of a 7-chip Mixed-POFC is increased from 120 to 144 with the same fractional bandwidth of 12%. To demonstrate the validity of Mixed-POFC, finite element analysis (FEA) technology is used to analyze the frequency characteristics of Mixed-POFC chips. The maximum error between designed frequencies and simulation frequencies is only 1.7%, which verifies that the Mixed-POFC method is feasible.
    Źródło:
    Archives of Acoustics; 2018, 43, 4; 681-687
    0137-5075
    Pojawia się w:
    Archives of Acoustics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zabezpieczenie śladów kryminalistycznych z wykorzystaniem najnowocześniejszych technik obrazowania – system oznaczania, ewidencji oraz śledzenia obiegu materiału dowodowego
    Recovery of forensic traces with use of state-of-the-art. imaging techniques – system for marking, tracing and maintaining chain of custody
    Autorzy:
    Frankowski, Adam
    Dębski, Artur
    Powiązania:
    https://bibliotekanauki.pl/articles/1205714.pdf
    Data publikacji:
    2018
    Wydawca:
    Centralne Laboratorium Kryminalistyczne Policji
    Tematy:
    technika 3D
    skanowanie
    obieg materiału dowodowego
    system eRCDŚ
    RCTK
    zdjęcia lotnicze
    tag RFiD
    3D technology
    scanning
    chain of custody
    eRCDŚ system
    aerial photographs
    RFiD tag
    Opis:
    W artykule omówiono wykorzystanie nowoczesnych technik do obrazowania miejsca zdarzenia oraz perspektywy powstającego systemu w zakresie oznaczania, ewidencji oraz śledzenia obiegu materiału dowodowego. W szczególności przedstawiono możliwość odtwarzania miejsca zdarzenia na podstawie zarejestrowanych obrazów i pomiarów wykonanych przy zastosowaniu specjalnych znaczników. Opisano również nadzór nad materiałem dowodowym i automatyzację czynności z wykorzystaniem tagów RFiD.
    The article describes the possibility of using modern techniques for crime scene imaging and a perspective of creating a system for denominating, tracing and maintaining the chain of custody of evidence. In particular, it presents the possibility of reproducing a crime scene based on recorded images and measurements performed with use of special markings. The Authors describe the chain of custody over the evidence and automation of procedures thanks to use of RFiD tags.
    Źródło:
    Problemy Kryminalistyki; 2018, 299; 5-9
    0552-2153
    Pojawia się w:
    Problemy Kryminalistyki
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A novel method for 3D measurement of RFID multi-tag network using a machine vision system
    Autorzy:
    Zhuang, X.
    Yu, X.
    Zhao, Z.
    Zhang, W.
    Liu, Z.
    Lu, D.
    Dong, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/221058.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    3D measurement
    RFID multi-tag network
    dual-CCD system
    neural network
    machine vision
    Opis:
    The three-dimensional (3D) coordinate measurement of radio frequency identification (RFID) multi-tag networks is one of the important issues in the field of RFID, which affects the reading performance of RFID multi-tag networks. In this paper, a novel method for 3D coordinate measurement of RFID multi-tag networks is proposed. A dual-CCD system (vertical and horizontal cameras) is used to obtain images of RFID multi-tag networks from different angles. The iterative threshold segmentation and the morphological filtering method are used to process the images. The template matching method is respectively used to determine the two-dimensional (2D) coordinate and the vertical coordinate of each tag. After that, the 3D coordinate of each tag is obtained. Finally, a back-propagation (BP) neural network is used to model the nonlinear relationship between the RFID multi-tag network and the corresponding reading distance. The BP neural network can predict the reading distances of unknown tag groups and find out the optimal distribution structure of the tag groups corresponding to the maximum reading distance. In the future work, the corresponding in-depth research on the neural network to adjust the distribution of tags will be done.
    Źródło:
    Metrology and Measurement Systems; 2018, 25, 3; 475-486
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Improvements of high-voltage trapezoidal waveform edge-rounding circuit
    Autorzy:
    Jankowski, Mariusz
    Powiązania:
    https://bibliotekanauki.pl/articles/397803.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Łódzka. Wydział Mikroelektroniki i Informatyki
    Tematy:
    CMOS integrated circuits
    high-voltage techniques
    wireless communications
    current-mode circuits
    RFID tag
    harmonic distortion
    electromagnetic compatibility
    układy scalone CMOS
    techniki wysokonapięciowe
    komunikacja bezprzewodowa
    obwód prądowy
    zniekształcenie harmoniczne
    kompatybilność elektromagnetyczna
    Opis:
    This paper introduces a solution to a design problem caused by necessity of electromagnetic noise reduction in simple close-range wireless command and control systems, including Radio-frequency identification (RFID) systems. Trade-off between simplicity of data transmission, detection and decoding on one side vs. presence of high frequency harmonics in transmitted signals on the other makes some designers choose approach in which trapezoidal waveforms are used instead of rectangular ones. Moreover, edges of trapezoidal waveforms are additionally rounded to further limit presence of higher harmonics and thus to comply to EMI regulations and requirements. The paper proposes a solution based on a reimplementation of a high-voltage structure already proposed by the author, but implemented with use of different semiconductor technology process. Utilization of this new process and devices available in this technology makes possible significant increase of the circuit operation quality.
    Źródło:
    International Journal of Microelectronics and Computer Science; 2018, 9, 3; 93-100
    2080-8755
    2353-9607
    Pojawia się w:
    International Journal of Microelectronics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    FID-MA XTEA : Cost-Effective RFID-Mutual Authentication Design Using XTEA Security on FPGA Platform
    Autorzy:
    Anusha, R.
    Shastrimath, V. Veena Devi
    Powiązania:
    https://bibliotekanauki.pl/articles/2055271.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    RFID
    mutual authentication
    MA
    XTEA
    FPGA
    NFC
    EPC
    encryption
    reader
    tag
    CBC mode
    Opis:
    RFID systems are one of the essential technologies and used many diverse applications. The security and privacy are the primary concern in RFID systems which are overcome by using suitable authentication protocols. In this manuscript, the cost-effective RFID-Mutual Authentication (MA) using a lightweight Extended Tiny encryption algorithm (XTEA) is designed to overcome the security and privacy issues on Hardware Platform. The proposed design provides two levels of security, which includes secured Tag identification and mutual authentication. The RFID-MA mainly has Reader and Tag along with the backend Server. It establishes the secured authentication between Tag and Reader using XTEA. The XTEA with Cipher block chaining (CBC) is incorporated in RFID for secured MA purposes. The authentication process completed based on the challenge and response between Reader and Tag using XTEA-CBC. The present work is designed using Verilog-HDL on the Xilinx environment and implemented on Artix-7 FPGA. The simulation and synthesis results discussed with hardware constraints like Area, power, and time. The present work is compared with existing similar approaches with hardware constraints improvements.
    Źródło:
    International Journal of Electronics and Telecommunications; 2021, 67, 4; 623--629
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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