Now showing items 1-20 of 28

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

    Guardiola, M.; Jofre, L.; Capdevila, S.; Blanch, S.; Romeu, J. (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 ...
  • Analysis and Synthesis of the Digital Structures by the Matrix Method 

    Psenicka, B.; Hospodka, J. (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 ...
  • Attenuation in Rectangular Waveguides with Finite Conductivity Walls 

    Yeap, K. H.; Tham, C. Y.; Yassin, G.; Yeong, K. C. (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 ...
  • Compact and Sharp-Rejection Bandstop Filter Using Uniplanar Double Spiral Resonant Cells 

    Ke Lu; Guang-Ming Wang; He-Xiu Xu (Společnost pro radioelektronické inženýrství, 2011-06)
    A novel compact bandstop filter composed of three cascaded uniplanar double spiral resonant cells (UDSRCs) for high attenuation rates is presented. Through the equivalent circuit prediction and parametric analysis, it is ...
  • A Compact Printed Monopole Antenna for Dual-band RFID and WLAN Applications 

    Panda, J. R.; Saladi, A. S. R.; Kshetrimayum, R. S. (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 ...
  • Current-Mode Dual-Phase Precision Full-Wave Rectifier Using Current-Mode Two-Cell Winner-Takes-All (WTA) Circuit 

    Koton, J.; Lahiri, A.; Herencsar, N.; Vrba, K. (Společnost pro radioelektronické inženýrství, 2011-06)
    In addition to the recently proposed full-wave rectifier by Prommee et al. using voltage-mode (VM)two-cell winner-takes-all (WTA) circuit, we present current-mode (CM) precision full-wave rectifier using CM two-cell WTA ...
  • Design, Fabrication and Properties of Rib Poly(methylmethacrylimide) Optical Waveguides 

    Prajzler, V.; Klapuch, J.; Lyutakov, O.; Huttel, I.; Spirkova, J.; Nekvindova, P.; Jerabek, V. (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 ...
  • Edge Detection with Sub-pixel Accuracy Based on Approximation of Edge with Erf Function 

    Hagara, M.; Kulla, P. (Společnost pro radioelektronické inženýrství, 2011-06)
    Edge detection is an often used procedure in digital image processing. For some practical applications is desirable to detect edges with sub-pixel accuracy. In this paper we present edge detection method for 1-D images ...
  • Effects of Imperfect Reference Signal Recovery on Performance of SC and SSC Receivers over Generalized Fading Channels 

    Nikolic, B. Z.; Djordjevic, G. T.; Milosevic, N. D. (Společnost pro radioelektronické inženýrství, 2011-06)
    This paper presents the study of the effects of imperfect reference signal recovery on the bit error rate (BER) performance of dual-branch switch-and-stay combining (SSC) and multibranch selection combining (SC) receivers ...
  • Estimation of Outage Capacity for Free Space Optical Links Over I-K and K Turbulent Channels 

    Nistazakis, H. E.; Tsigopoulos, A. D.; Hanias, M. P.; Psychogios, C. D.; Marinos, D.; Aidinis, C.; Tombras, G. 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 ...
  • Evaluation and Investigation of the Delay in VoIP Networks 

    Kyrbashov, B.; Baronak, I.; Kovacik, M.; Janata, V. (Společnost pro radioelektronické inženýrství, 2011-06)
    The paper is focused mainly on the delay problems, which considerably influence the final quality of connections in VoIP (Voice over IP) networks. The paper provides a detailed exploration of the nature and mechanisms of ...
  • Experimental Research of Harmonic Spectrum of Currents at Traction Drive with PMSM 

    Dolecek, R.; Novak, J.; Cerny, O. (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 ...
  • Guest Editorial Special Issue towards EuCAP 2012 “Emerging Materials, Methods, and Technologies in Antenna & Propagation” 

    Mosig, J. R.; Mazanek, M.; Polivka, M. (Společnost pro radioelektronické inženýrství, 2011-06)
  • Intelligent Ray Launching Algorithm for Indoor Scenarios 

    Lai, Z.; De La Roche, G.; Bessis, N.; Kuonen, P.; Clapworthy, G.; Zhou, D.; Zhang, J. (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 ...
  • An Issue of Boundary Value for Velocity and Training Overhead Using Cooperative MIMO Technique in Wireless Sensor Network 

    Islam, M. R. (Společnost pro radioelektronické inženýrství, 2011-06)
    A boundary value of velocity of data gathering node (DGN) and a critical value for training overhead beyond which the cooperative communication in wireless sensor network will not be feasible is proposed in this paper. ...
  • Modeling Deterministic Chaos Using Electronic Circuits 

    Petrzela, J.; Hrubos, Z.; Gotthans, T. (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 ...
  • New chopper modulators using differential voltage current conveyor 

    Kumngern, M. (Společnost pro radioelektronické inženýrství, 2011-06)
    This paper presents new chopper modulators which can enable to assign three modulators in one circuit. Full amplitude modulators as Cowan and Ring modulators are kinds of the amplitude modulators as well. The proposed ...
  • Photovoltaic Panel Modeling in MATLAB® Environment 

    Zaplatilek, K.; Leuchter, J. (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 ...
  • Resolution Capabilities of Future THz Cameras 

    Lizarraga, J.; del-Rio, C. (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 ...
  • RF and THz Identification Using a New Generation of Chipless RFID Tags 

    Perret, E.; Hamdi, M.; Vena, A.; Garet, F.; Bernier, M.; Duvillaret, L.; Tedjini, S. (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 ...