Browsing 2011/2 by Issue Date

Now showing items 1-20 of 28

  • Attenuation in Rectangular Waveguides with Finite Conductivity Walls 

    Yeap, Kim Ho; Tham, Choy Yoong; Yassin, Ghassan; Yeong, Kee Choon (Společnost pro radioelektronické inženýrství, 2011-06)
    We present a fundamental and accurate approach to compute the attenuation of electromagnetic waves propagating in rectangular waveguides with finite conductivity walls. The wavenumbers kx and ky in the x and y directions ...

  • Utilization of Selected Data Mining Methods for Communication Network Analysis 

    Vranova, Zuzana; Ondryhal, Vojtech (Společnost pro radioelektronické inženýrství, 2011-06)
    The aim of the project was to analyze the behavior of military communication networks based on work with real data collected continuously since 2005. With regard to the nature and amount of the data, data mining methods ...

  • Modeling Deterministic Chaos Using Electronic Circuits 

    Petrzela, Jiri; Hrubos, Zdenek; Gotthans, Tomas (Společnost pro radioelektronické inženýrství, 2011-06)
    This paper brings a note on systematic circuit synthesis methods for modeling the dynamical systems given by mathematical model. Both classical synthesis and integrator based method is demonstrated via the relatively ...

  • Design, Fabrication and Properties of Rib Poly(methylmethacrylimide) Optical Waveguides 

    Prajzler, Vaclav; Klapuch, Jan; Lyutakov, Oleksiy; Huettel, Ivan; Spirkova, Jarmila; Nekvindova, Pavla; Jerabek, Vitezslav (Společnost pro radioelektronické inženýrství, 2011-06)
    We report about design, fabrication and properties of the polymer optical waveguides deposited on silica-on-silicon substrate. The design of the waveguides is based on a concept that geometric dimensions of the single mode ...

  • Photovoltaic Panel Modeling in MATLAB® Environment 

    Zaplatilek, Karel; Leuchter, Jan (Společnost pro radioelektronické inženýrství, 2011-06)
    This article is focused on the original photovoltaic panel model identification method. The method is based on the measured characteristics for given irradiation. The system can automatically create a mathematical model ...

  • RF and THz Identification Using a New Generation of Chipless RFID Tags 

    Perret, Etienne; Hamdi, Maher; Vena, Arnaud; Garet, Frederic; Bernier, Maxime; Duvillaret, Lionel; Tedjini, Smail (Společnost pro radioelektronické inženýrství, 2011-06)
    This article presents two chipless RFID approaches where data are reading using electromagnetic waves and where the medium encoding the data is completely passive. The former approach rests on the use of RF waves (more ...

  • Wireless Power Transmission for Power Supply: State of Art 

    Kracek, Jan; Mazanek, Milos (Společnost pro radioelektronické inženýrství, 2011-06)
    The wireless power supply is motivated by simple and comfortable use of many small electric appliances with low power input. This paper reviews the concepts which are suitable for wireless power transmission with respect ...

  • A Compact Printed Monopole Antenna for Dual-band RFID and WLAN Applications 

    Panda, Jyoti Ranjan; Saladi, Aditya Sri Ram; Kshetrimayum, Rakhesh Singh (Společnost pro radioelektronické inženýrství, 2011-06)
    Design of a simple and compact microstrip-fed printed monopole antenna (PMA) for applications in wireless local area network (WLAN) and radio frequency identification (RFID) is presented. The dual-band operation is achieved ...

  • Estimation of Outage Capacity for Free Space Optical Links Over I-K and K Turbulent Channels 

    Nistazakis, Hector E.; Tsigopoulos, Andreas D.; Hanias, Michalis P.; Psychogios, Christos. D.; Marinos, Dimitris; Aidinis, Costas; Tombras, George S. (Společnost pro radioelektronické inženýrství, 2011-06)
    The free space optical communication systems are attracting great research and commercial interest due to their capability of transferring data, over short distances, with high rate and security, low cost demands and without ...

  • A Sequential Circuit-Based IP Watermarking Algorithm for Multiple Scan Chains in Design-for-Test 

    Liang, Wei; Sun, Xingming; Ruan, Zhiqiang; Long, Jing; Wu, Chengtao (Společnost pro radioelektronické inženýrství, 2011-06)
    In Very Large Scale Integrated Circuits (VLSI) design, the existing Design-for-Test(DFT) based watermarking techniques usually insert watermark through reordering scan cells, which causes large resource overhead, low ...

  • Experimental Research of Harmonic Spectrum of Currents at Traction Drive with PMSM 

    Dolecek, Radovan; Novak, Jaroslav; Cerny, Ondrej (Společnost pro radioelektronické inženýrství, 2011-06)
    The paper deals with the significant results of the experimental research of current harmonic spectrum of traction drive with permanent magnet synchronous motor. The experiments were done on a special workplace with a real ...

  • Theoretical Findings and Measurements on Planning a UHF RFID System inside a Room 

    Dimitriou, Antonis G.; Bletsas, Aggelos; Polycarpou, Anastasis C.; Sahalos, John N. (Společnost pro radioelektronické inženýrství, 2011-06)
    This paper investigates the problem of improving the identification performance of a UHF RFID system inside a room. We assume static reader, passive tags and availability of commodity antennas. A ray-tracing propagation ...

  • 3D UWB Magnitude-Combined Tomographic Imaging for Biomedical Applications. Algorithm Validation 

    Guardiola, Marta; Jofre, Lluis; Capdevila, Santiago; Blanch, Sebastian; Romeu, Jordi (Společnost pro radioelektronické inženýrství, 2011-06)
    Biomedical microwave imaging is a topic of continuous research for its potential in different areas especially in breast cancer detection. In this paper, 3D UWB Magnitude-Combined tomographic algorithm is assessed for this ...

  • Resolution Capabilities of Future THz Cameras 

    Lizarraga, Juan; Del-Rio, Carlos (Společnost pro radioelektronické inženýrství, 2011-06)
    THz technology for developing imaging systems has recently aroused great interest, mainly due to the large number of applications in which these frequencies can be used: security, vision in hard environments, etc. In this ...

  • A Robust Image Watermarking Based on Image Restoration Using SIFT 

    Luo, Haijun; Sun, Xingming; Yang, Hengfu; Xia, Zhihua (Společnost pro radioelektronické inženýrství, 2011-06)
    This paper introduces a novel robust watermarking scheme for digital images, which is robust against common signal processing and geometric distortion attacks. In order to be resistant to geometric distortion attacks, the ...

  • Guest Editorial Special Issue towards EuCAP 2012 “Emerging Materials, Methods, and Technologies in Antenna & Propagation” 

    Mosig, Juan R.; Mazanek, Milos; Polivka, Milan (Společnost pro radioelektronické inženýrství, 2011-06)

  • Statistical Channel Model for 60 GHz WLAN Systems in Conference Room Environment 

    Maltsev, Alexander; Maslennikov, Roman; Lomayev, Artyom; Sevastyanov, Alexey; Khoryaev, Alexey (Společnost pro radioelektronické inženýrství, 2011-06)
    In this work, a methodology of statistical channel modeling for 60 GHz WLAN systems is proposed and a channel model for the office conference room environment is developed. The proposed methodology takes into account the ...

  • Intelligent Ray Launching Algorithm for Indoor Scenarios 

    Lai, Zhihua; De La Roche, Guillaume; Bessis, Nik; Kuonen, Pierre; Clapworthy, Gordon; Zhou, Dibin; Zhang, Jie (Společnost pro radioelektronické inženýrství, 2011-06)
    This article describes the indoor IRLA (Intelligent Ray Launching Algorithm), which originates from an efficient outdoor propagation prediction model. Implementation and validation are given in detail. An indoor office ...

  • Supplementary First-Order All-Pass Filters with Two Grounded Passive Elements Using FDCCII 

    Metin, Bilgin; Herencsar, Norbert; Pal, Kirat (Společnost pro radioelektronické inženýrství, 2011-06)
    In this study, two novel first-order all-pass filters are proposed using only one grounded resistor and one grounded capacitor along with a fully differential current conveyor (FDCCII). There is no element-matching ...

  • Analysis and Synthesis of the Digital Structures by the Matrix Method 

    Psenicka, Bohumil; Hospodka, Jiri (Společnost pro radioelektronické inženýrství, 2011-06)
    This paper presents a general matrix algorithm for analysis of digital filters. The method proposed in this paper allows not only the analysis of the digital filters, but also the construction of new structures of the ...