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Author: search.filters.author.Supramongkonset, JatupornSubject: search.filters.subject.RFID

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    Path Loss Analysis of RFID Channles Measurement in Library with Metal Bookshelves
    (2023-01-01)
    Supramongkonset, Jatuporn
    ;
    Promwong, Sathaporn
    The radio frequency identification (RFID) library management system has gained popularity in libraries due to its convenience and improved efficiency. Accurate channel modeling is crucial for predicting system performance and received power. This paper focuses on modeling the channel characteristics of metal bookshelves in RFID library management systems operating at a frequency of 2.45 GHz. We employ microstrip patch antennas as both transmitter (Tx) and receiver (Rx) antennas, considering both vertical-vertical (V-V) and horizontal-horizontal (H-H) polarizations. Linear regression analysis models the path loss characteristic, allowing us to establish a mathematical relationship that accurately represents the path loss between the antennas. Furthermore, statistical models based on cumulative distribution function (CDF) are employed to characterize multipath fading, providing insights into the distribution of signal variations caused by multipath propagation. The experimental results indicate that metal bookshelves with V-V and H-H polarizations are suitable for the performance of RFID library management systems. The path loss models generated through linear regression analysis enable accurate prediction of received power, while the statistical models based on CDF contribute to a comprehensive understanding of multipath fading and its impact on system performance. This study provides valuable insights for librarians and system designers seeking to implement efficient and reliable RFID technology in library management systems. By examining and modeling the channel characteristics of metal bookshelves, our findings support the optimal use of V-V and H-H polarizations, ensuring the effective operation of RFID systems in library environments.
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    Evaluation of RFID Propagation Channels with Wooden and Metal Bookshelves Based on Measurement Data
    (2023-01-01)
    Supramongkonset, Jatuporn
    ;
    Rattasuwan, Kotchakorn
    ;
    Promwong, Sathaporn
    This paper studies the propagation that occurs in Radio Frequency Identification (RFID). The purpose of this study is to establish a model to study the energy and efficiency of the system. Experimenting with two model of bookshelf models. Wood and metal bookshelves are used as models to measure data. Microstrip antenna are used as a transmitter (Tx antenna) and a receiver (Rx antenna) at frequency of 2.45 GHz channels in co-polarization. From the data of this measurement result, we can observe the tendency of path loss arising from the change in distance and the effect of the signal in both wood and metal bookshelf by the contouring of the path loss signal. The results showed that the co-polarization had higher path loss at increased distances. By path loss modeling using contour method it was found that at measuring point near the edge of the bookshelf There is path loss in the edge of metal bookshelf higher than the edges of wooden bookshelf.
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    Quantitative Experimental Evaluation of RFID Propagation Loss with Wooden and Metal Bookshelves
    (2023-01-01)
    Supramongkonset, Jatuporn
    ;
    Promwong, Sathaporn
    Radio frequency identification (RFID) is wireless multimedia applications for bookshelves experimental system to replace the barcodes media technology. The RFID propagation channel characteristics and environment effect should be known. In this study to evaluate the RFID propagation loss with wooden and metal bookshelves based on data of measurement. Experimental study evaluation of RFID multimedia system with bookshelves is using vector network analyzer (VNA) and the microstrip patch antennas of transmitter (Tx) and receiver (Rx) antennas at a frequency range from 2.4 GHz to 2.5 GHz. The results of experiment are considering the path loss, received signal strength (RSS), and comparison the path loss differences with cumulative distribution function (CDF) to evaluated, respectively. In this research work are necessary for RFID antenna design and evaluate the RFID multimedia systems.