Now showing items 1-20 of 22

  • SPICE Model of Memristor with Nonlinear Dopant Drift 

    Biolek, Zdeněk; Biolek, Dalibor; Biolková, Viera (Společnost pro radioelektronické inženýrství, 2009-06)
    A mathematical model of the prototype of memristor, manufactured in 2008 in Hewlett-Packard Labs, is described in the paper. It is shown that the hitherto published approaches to the modeling of boundary conditions need ...
  • Comparative Analysis of Guided Modal Properties of Double-Positive and Double-Negative Metamaterial Slab Waveguides 

    Kim, K. Y. (Společnost pro radioelektronické inženýrství, 2009-06)
    The guided modal properties of double-positive and double-negative metamaterial slab waveguides are numerically analyzed and compared when varying the dielectric and magnetic constants. As the cutoff frequencies of both ...
  • 3D Metamaterial Based on a Regular Array of Resonant Dielectric Inclusions 

    Vendik, I.; Odit, M.; Kozlov, D. (Společnost pro radioelektronické inženýrství, 2009-06)
    The 3D regular lattice of bi-spherical dielectric resonant inclusions arranged in a cubic lattice as two sets of spheres made from the same dielectric material having different radii and embedded in a host dielectric ...
  • Miniaturization of Planar Microwave Devices by Means of Complementary Spiral Resonators (CSRs): Design of Quadrature Phase Shifters 

    Siso, G.; Gil, M.; Aranda, M.; Bonache, J.; Martin, F. (Společnost pro radioelektronické inženýrství, 2009-06)
    In this work, two compact quadrature phase shifters based on metamaterial transmission lines implemented by means of complementary spiral resonators (CSRs) have been designed, fabricated and measured. The structures consist ...
  • UWB System Performance Improvement Using Smart Interference Rejection Filter 

    Dimitrijevic, B.; Milosevic, N.; Nikolic, Z.; Petrovic, P. (Společnost pro radioelektronické inženýrství, 2009-06)
    In this paper we proposed a smart interference rejection filter in TH-PPM UWB system, which improves the system\'s error probability for an order of magnitude in case of high power OFDM interference. The smart filter is ...
  • Synthetic Aperture Radar - Hardware Development 

    Rosner, V.; Seller, R.; Dudas, L.; Kazi, K.; Miko, G. (Společnost pro radioelektronické inženýrství, 2009-06)
    Experimental real and synthetic aperture radar are developed from the base-band digital unit to the analogue RF parts, based on solid state units, using pulse compression for radar imaging. Proper QPSK code is found for ...
  • Directive Emission Obtained by Mu and Epsilon-Near-Zero Metamaterials 

    Yang, J.; Huang, M.; Peng, J. (Společnost pro radioelektronické inženýrství, 2009-06)
    In this work, we use Mu and Epsilon-Near-Zero (MENZ) metamaterials to realize the substrates that can modify the emission of an embedded line source. Simulation results show that the cylindrical waves emitted from the line ...
  • Multifrequency Printed Antennas Loaded with Metamaterial Particles 

    Segovia-Vargas, D.; Herraiz-Martinez, F. J.; Ugarte-Munoz, E.; Montero-De-Paz, J.; Gonzalez-Posadas, V.; Garcia-Munoz, L. E. (Společnost pro radioelektronické inženýrství, 2009-06)
    This paper provides a review of printed antennas loaded with metamaterial particles. This novel technique allows developing printed antennas with interesting features such as multifrequency (simultaneous operation over two ...
  • Analog Signal Processing in Transmission Line Metamaterial Structures 

    Gupta, S.; Caloz, C. (Společnost pro radioelektronické inženýrství, 2009-06)
    Several novel dispersion-engineered CRLH TL metamaterial analog signal processing systems, exploiting the broadband dispersive characteristics and design flexibility of CRLH TLs, are presented. These systems are either ...
  • An Efficient CS-CPWL Based Predistorter 

    Bruno, M.; Cousseau, J.; Werner, S.; Figueroa, J.; Cheong, M.; Wichman, R. (Společnost pro radioelektronické inženýrství, 2009-06)
    We study the performance of Hammerstein predistorters (PD) to model and compensate nonlinear effects produced by a high power amplifier with memory. A novel Hammerstein model is introduced that includes, as the basic static ...
  • Compensation of Wall Effect for Through Wall Tracking of Moving Targets 

    Rovnakova, J.; Kocur, D. (Společnost pro radioelektronické inženýrství, 2009-06)
    Through wall tracking of moving targets is of interest for rescue, surveillance and security operations. A useful method applies an ultra-wideband radar approach for this purpose since electromagnetic waves in the lower ...
  • Superconductor Microwave Kinetic Inductance Detectors: System Model of the Readout Electronics 

    Alimenti, F.; Ercoli, M.; Palazzari, V.; Roselli, L. (Společnost pro radioelektronické inženýrství, 2009-06)
    This paper deals with the readout electronics needed by superconductor Microwave Kinetic Inductance Detectors (MKIDs). MKIDs are typically implemented in the form of cryogenic-cooled high quality factor microwave resonator. ...
  • Influence of EBG Structures on the Far-Field Pattern of Patch Antennas 

    Horak, J.; Raida, Zbyněk (Společnost pro radioelektronické inženýrství, 2009-06)
    In this paper, the influence of the EBG structures on the far-field pattern of patch antennas is investigated. As a reference model, a conventional rectangular patch antenna on a high-permittivity substrate is used. The ...
  • Distribution of Video-on-Demand Service over Cable Television Networks 

    Jordanova, L. T.; Nenkov, J. I. (Společnost pro radioelektronické inženýrství, 2009-06)
    The paper deals with investigations carried out to increase the effectiveness of video-on-demand (VoD) systems when cable television networks are used. A comparative analysis of the existing VoD architectures is made with ...
  • A Simple Signal Shaper for GMSK/GFSK and MSK Modulator Based on Sigma-Delta Look-up Table 

    Svedek, T.; Herceg, M.; Matic, T. (Společnost pro radioelektronické inženýrství, 2009-06)
    Due to wide power spectrums of rectangular data streams, it is important for base-band signals to be heavily band limited before modulation. That can be achieved by pulse shaping of rectangular bits. Some of the most common ...
  • Using Digital Filtration for Hurst Parameter Estimation 

    Prochaska, J.; Vargic, R. (Společnost pro radioelektronické inženýrství, 2009-06)
    We present a new method to estimate the Hurst parameter. The method exploits the form of the autocorrelation function for second-order self-similar processes and is based on one-pass digital filtration. We compare the ...
  • Some Advances in the Circuit Modeling of Extraordinary Optical Transmission 

    Medina, F.; Mesa, F.; Rodriguez-Berral, R. (Společnost pro radioelektronické inženýrství, 2009-06)
    The phenomenon of extraordinary optical transmission (EOT) through electrically small holes perforated on opaque metal screens has been a hot topic in the optics community for more than one decade. This experimentally ...
  • Current and Future Research Trends in Substrate Integrated Waveguide Technology 

    M. Bozzi, L. Perregrini, K. Wu, P. Arcioni (Společnost pro radioelektronické inženýrství, 2009-06)
    Substrate Integrated Waveguide (SIW) technology is the most promising candidate for the implementation of millimeter-wave (mm-wave) integrated circuits and systems for the next decade. Based on planar dielectric substrates ...
  • Design of the Square Loop Frequency Selective Surfaces with Particle Swarm Optimization via the Equivalent Circuit Model 

    Yilmaz, A. E.; Kuzuoglu, M. (Společnost pro radioelektronické inženýrství, 2009-06)
    In this study, Particle Swarm Optimization is applied for the design of Square Loop Frequency Selective Surfaces (the conventional Square Loop, Gridded Square Loop, and Double Square Loop) via their equivalent circuits. ...
  • Metamaterials: A Personal View 

    Sihvola, A. (Společnost pro radioelektronické inženýrství, 2009-06)
    This article discusses fundamental properties of metamaterials. Firstly, it is argued that the defining property of metamaterials is emergence and not that they should display properties not observable in nature. In addition, ...