Poslední příspěvky

  • Numerical Modeling of Magnetic Field Deformation as Related to Susceptibility Measured with an MR System 

    Bartusek, K.; Fiala, P.; Mikulka, J. (Společnost pro radioelektronické inženýrství, 2008-12)
    The possibility is studied of numerical modeling of magnetic field deformations in the environment of measured diamagnetic and paramagnetic samples for the purposes of studying magnetic resonance (MR) image deformations ...
  • Slotted PIFA for Mobile Communication Devices 

    Bonefacic, D.; Rapinac, B.; Bartolic, J. (Společnost pro radioelektronické inženýrství, 2008-12)
    Slotted PIFA with capacitive loading for operation in the 880 / 960 MHz band is presented. The PIFA is intended for mobile terminals in GSM mobile communication network. The antenna is placed on a ground plane with dimensions ...
  • Enhancement of Optical Coherence Tomography Images of the Retina by Normalization and Fusion 

    Rossant, F.; Amiel, F.; Ea, T.; Martinez, C. M.; Paques, M. (Společnost pro radioelektronické inženýrství, 2008-12)
    This paper describes an image processing method applied to Optical Coherence Tomography (OCT) images of the retina. The aim is to achieve improved OCT images from the fusion of sequential OCT scans obtained at identical ...
  • Design of Microstrip Band Pass Fractal Filter for Suppression of Spurious Band 

    Baral, R. N.; Singhal, P. K. (Společnost pro radioelektronické inženýrství, 2008-12)
    In this paper, the design and subsequent fabrication of a hairpin-line band pass filter has been proposed. This filter exhibits periodic frequency response. By proper design, the spurious bands are being suppressed ...
  • A New CAC Method Using Queuing Theory 

    Baronak, I.; Kvackaj, P. (Společnost pro radioelektronické inženýrství, 2008-12)
    The CAC (Connection Admission Control) method plays an important role in the ATM (Asynchronous Transfer Mode) network environment. The CAC is the first step in the prevention of congested states in the network topology, ...
  • Shielding Effectiveness of Laminated Shields 

    P. V. Y. Jayasree, V. S. S. N. S. Baba, B. P. Rao (Společnost pro radioelektronické inženýrství, 2008-12)
    Shielding prevents coupling of undesired radiated electromagnetic energy into equipment otherwise susceptible to it. In view of this, some studies on shielding effectiveness of laminated shields with conductors and conductive ...
  • Implementation and Evaluation of Power Consumption of an Iris Pre-processing Algorithm on Modern FPGA 

    Blasinsky, H.; Amiel, F.; Ea, T.; Rossant, F.; Mikovicova, B. (Společnost pro radioelektronické inženýrství, 2008-12)
    In this article, the efficiency and applicability of several power reduction techniques applied on a modern 65nm FPGA is described. For image erosion and dilation algorithms, two major solutions were tested and compared ...
  • Utilization of Faraday Mirror in Fiber Optic Current Sensors 

    Drexler, P.; Fiala, P. (Společnost pro radioelektronické inženýrství, 2008-12)
    Fiber optic sensors dispose of some advantages in the field of electrical current and magnetic field measurement, like large bandwidth, linearity, light transmission possibilities. Unfortunately, they suffer from some ...
  • Eyelid Localization for Iris Identification 

    Adam, M.; Rossant, F.; Amiel, F.; Mikovikova, B.; Ea, T. (Společnost pro radioelektronické inženýrství, 2008-12)
    This article presents a new eyelid localization algorithm based on a parabolic curve fitting. To deal with eyelashes, low contrast or false detection due to iris texture, we propose a two steps algorithm. First, possible ...
  • An Efficient Finger Allocation Method for the Maximum Likelihood RAKE Receiver 

    Baltzis, K. B. (Společnost pro radioelektronické inženýrství, 2008-12)
    In wideband wireless communication systems the RAKE receiver is commonly used to collect the resolvable multipath energy and counter the effects of fading through diversity. However, in channels with large delay and energy ...
  • The Time Difference of Arrival Estimation of Wi-Fi Signals 

    Nemec, Z.; Bezousek, P. (Společnost pro radioelektronické inženýrství, 2008-12)
    The papers deals with a modeling of a Time- Difference of Arrival system for a subscriber station localization, based on the 802.11 standard wireless network. In the case of severe multipath effects the standard TDOA ...
  • A New Application of Current Conveyors: The Design of Wideband Controllable Low-Noise Amplifiers 

    Godara, B.; Fabre, A. (Společnost pro radioelektronické inženýrství, 2008-12)
    The aim of this paper is three-fold. First, it reviews the low-noise amplifier and its relevance in wireless communications receivers. Then it presents an exhaustive review of the existing topologies. Finally, it introduces ...
  • Application of a Cumulative Method for Car Borders Specification in Image 

    Dobrovolny, M.; Bezousek, P.; Hajek, M. (Společnost pro radioelektronické inženýrství, 2008-12)
    The paper deals with low-level car detection methods in images. The car detection is an integral part of all intelligent car cruise systems. This article describes the method for suppression of the edges produced by classical ...
  • Optimization of Micro Strip Array Antennas Using Hybrid Particle Swarm Optimizer with Breeding and Subpopulation for Maximum Side-Lobe Reduction 

    Chaker, H.; Meriah, S. M.; Bendimerad, F. T. (Společnost pro radioelektronické inženýrství, 2008-12)
    In this paper, a technique based on hybrid particle swarm optimiser with breeding and subpopulation is presented for optimal design of reconfigurable dual-beam linear array antennas and planar arrays. In the amplitudephase ...
  • Synthesizing Sierpinski Antenna by Genetic Algorithm and Swarm Optimization 

    Vidal, B. M.; Raida, Zbyněk (Společnost pro radioelektronické inženýrství, 2008-12)
    The paper discusses the synthesis of the Sierpinski antenna operating at three prescribed frequencies: 0.9 GHz, 1.8 GHz (both GSM) and 2.4 GHz (Bluetooth). In order to synthesize the antenna, a genetic algorithm and a ...
  • Parametric Study of Mushroom-like and Planar Periodic Structures in Terms of Simultaneous AMC and EBG Properties 

    Kovacs, P.; Raida, Zbyněk; Martinez-Vazquez, M. (Společnost pro radioelektronické inženýrství, 2008-12)
    In the paper, the parametric analysis of a mushroom-like and a planar metallo-dielectric periodic structure with square unit cell and metallic patch is presented. First, the angular stability for different unit cell settings ...
  • ACE Strategy with Virtual Channels 

    Vondrasek, M.; Sovka, Pavel; Tichy, T. (Společnost pro radioelektronické inženýrství, 2008-12)
    Cochlear implant is an electronic device, which can mediate hearing sensations to profoundly deaf people. Contemporary cochlear implants are sophisticated electronic devices; however, their performance could still be ...
  • Recent Techniques in Design and Implementation of Microwave Planar Filters 

    Baral, R. N.; Singhal, P. K. (Společnost pro radioelektronické inženýrství, 2008-12)
    This paper details the techniques and initiatives made recently for improved response and simultaneous development of microwave planar filters. Although the objective of all the techniques is to design low cost filters ...
  • Ways to Optimize Analogue Switched Circuits 

    Dolivka, L.; Hospodka, J. (Společnost pro radioelektronické inženýrství, 2008-12)
    This paper describes how analogue switched circuits (switched-capacitor and switched-current circuits) can be optimized by means of a personal computer. The optimization of this kind of circuits is not so common and their ...
  • EMC of Frequency Controlled Electric Drives 

    Novak, J.; Simanek, J.; Cerny, O.; Dolecek, R. (Společnost pro radioelektronické inženýrství, 2008-12)
    The paper deals with solution possibilities of EMC for voltage inverters, which uses PWM (Pulse Width Modulation). The paper offers solution of interference suppression which is raised by operation of frequency controlled ...

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