Now showing items 1-20 of 55

  • Tag Anti-collision Algorithm for RFID Systems with Minimum Overhead Information in the Identification Process 

    Mohammed, Usama S.; Salah, Mostafa (Společnost pro radioelektronické inženýrství, 2011-04)
    This paper describes a new tree based anti-collision algorithm for Radio Frequency Identification (RFID) systems. The proposed technique is based on fast parallel binary splitting (FPBS) technique. It follows a new ...
  • Development in Electronic Packaging – Moving to 3D System Configuration 

    Szendiuch, I. (Společnost pro radioelektronické inženýrství, 2011-04)
    The electronic industry is reducing package dimensions of components as well as complete electronics systems. Surface mount device passives and semiconductor chips have to be mounted together bringing a functional system ...
  • Recognition of Emotions in Czech Newspaper Headlines 

    Burget, Radim; Karasek, Jan; Smekal, Zdenek (Společnost pro radioelektronické inženýrství, 2011-04)
    With the growth of internet community, many different text-based documents are produced. Emotion detection and classification in text becomes very important in human-machine interaction or in human-to-human internet ...
  • Reduction of Sidelobes by Nonuniform Elements Spacing of a Spherical Antenna Array 

    Rupcic, Slavko; Mandric, Vanja; Zagar, Drago (Společnost pro radioelektronické inženýrství, 2011-04)
    This paper presents a significant sidelobe reduction if nonuniform elevational spacing of antenna elements on the sphere is used. Antenna elements are progressively phased with a uniform amplitude excitation. The calculation ...
  • Voltage-Controlled Floating Resistor Using DDCC 

    Kumngern, Montree; Torteanchai, Usa; Dejhan, Kobchai (Společnost pro radioelektronické inženýrství, 2011-04)
    This paper presents a new simple configuration to realize the voltage-controlled floating resistor, which is suitable for integrated circuit implementation. The proposed resistor is composed of three main components: MOS ...
  • Behavioral Modeling of Memcapacitor 

    Biolek, Dalibor; Biolek, Zdenek; Biolkova, Viera (Společnost pro radioelektronické inženýrství, 2011-04)
    Two behavioral models of memcapacitor are developed and implemented in SPICE-compatible simulators. Both models are related to the charge-controlled memcapacitor, the capacitance of which is controlled by the amount of ...
  • Analysis and Design Procedure of LVLP Sub-bandgap Reference - Development and Results 

    Urban, Tomas; Subrt, Ondrej; Martinek, Pravoslav (Společnost pro radioelektronické inženýrství, 2011-04)
    This work presents an thorough analysis and design of a low-voltage low-power voltage reference circuit with sub-bandgap output voltage. The outcome of the analysis and the resulting design rules are universal and it is ...
  • Current Gain Controlled CCTA and its Application in Quadrature Oscillator and Direct Frequency Modulator 

    Sotner, Roman; Jerabek, Jan; Prokop, Roman; Vrba, Kamil (Společnost pro radioelektronické inženýrství, 2011-04)
    A modified conception of adjustable current conveyor transconductance amplifier (CCTA) and its interesting application in simple quadrature oscillator expandable for direct frequency modulation purposes, employing only ...
  • A New Low-Power CMOS Quadrature VCO with Current Reused Structure 

    Wang, Chunhua; Peng, Guanchao; Ma, Minglin; Li, Zhan (Společnost pro radioelektronické inženýrství, 2011-04)
    A new quadrature voltage controlled oscillator (QVCO) circuit topology is proposed for low-voltage and low-power applications. In the proposed circuit, two oscillators with current-reused structure are coupled to each other ...
  • Topology Reduction for Approximate Symbolic Analysis 

    Kolka, Zdenek; Vlk, Martin; Horak, Martin (Společnost pro radioelektronické inženýrství, 2011-04)
    The paper deals with a procedure for approximate symbolic analysis of linear circuits based on simplifying the circuit model. The procedure consists of two main steps. First, network elements whose influence on the circuit ...
  • Basic Block of Pipelined ADC Design Requirements 

    Kledrowetz, Vilem; Haze, Jiri (Společnost pro radioelektronické inženýrství, 2011-04)
    The paper describes design requirements of a basic stage (called MDAC - Multiplying Digital-to- Analog Converter) of a pipelined ADC. There exist error sources such as finite DC gain of opamp, capacitor mismatch, thermal ...
  • Rural Optical-Propagation Measurements 

    Epple, Bernhard; Henniger, Hennes; Kurz, Stefan; Haan, Hubertus (Společnost pro radioelektronické inženýrství, 2011-04)
    Compared with traditional communication technologies like wired or radio frequency communications, optical wireless communication has a unique fading behavior of the received signal, that does not allow to use existing ...
  • Current and Voltage Conveyors in Current- and Voltage-Mode Precision Full-Wave Rectifiers 

    Koton, Jarostav; Herencsar, Norbert; Vrba, Kamil (Společnost pro radioelektronické inženýrství, 2011-04)
    In this paper new versatile precision full-wave rectifiers using current and/or voltage conveyors as active elements and two diodes are presented. The performance of these circuit solutions is analysed and compared to the ...
  • Ni and Ni Silicides Ohmic Contacts on N-type 6H-SiC with Medium and Low Doping Level 

    Cichon, Stanislav; Barda, Bohumil; Machac, Petr (Společnost pro radioelektronické inženýrství, 2011-04)
    Ni silicides contacts, which are expected to be advantageous contact materials on SiC, were tested in this work. Prepared contact structures were ohmic with low contact resistivity approximately 8×10-4 Ω cm2 after annealing ...
  • Design of Discrete Frequency Coded Sequences using PSOCM for Target Detection with CAF 

    Rao, M. V. Nageswara; Rajeswari, K. Raja (Společnost pro radioelektronické inženýrství, 2011-04)
    This paper presents the design of Discrete Frequency Coded (DFC) sequences with good auto correlation properties using Particle Swarm Optimization with Cauchy Mutation (PSOCM) technique. The crossambiguity function method ...
  • ASR Systems in Noisy Environment: Analysis and Solutions for Increasing Noise Robustness 

    Rajnoha, Josef; Pollak, Petr (Společnost pro radioelektronické inženýrství, 2011-04)
    This paper deals with the analysis of Automatic Speech Recognition (ASR) suitable for usage within noisy environment and suggests optimum configuration under various noisy conditions. The behavior of standard parameterization ...
  • Arbitrary Shape Electromagnetic Transparent Device Based on Laplace’s Equation 

    Yang, Jing-jing; Huang, Ming; Yang, Cheng-fu; Shi, Ji-hong (Společnost pro radioelektronické inženýrství, 2011-04)
    Transparent device is deliberately-designed electromagnetic structure that is transparent to electromagnetic wave. It can be used as a radome structure which is capable of protection antenna inside without sacrificing its ...
  • Analysis of Broadcast Authentication Mechanism in Selected Network Topologies 

    Vanek, Tomas; Rohlik, Matej (Společnost pro radioelektronické inženýrství, 2011-04)
    This paper deals with simulation of the broadcast authentication protocols using Colored Petri Nets and further optimizations in Matlab environment. Typical application of broadcast authentication protocols can be ...
  • Activation Energy of RTS Noise 

    Pavelka, Jan; Sikula, Josef; Tacano, Munecazu; Toita, Masato (Společnost pro radioelektronické inženýrství, 2011-04)
    Low frequency noise was measured in silicon MOSFET and GaN and InGaAs based HFET devices with special emphasis on the RTS noise. The RTS (Random Telegraph Signal) dependence on the biasing conditions and temperature was ...
  • Optimization of Hierarchical System for Data Acquisition 

    Novotny, Vit (Společnost pro radioelektronické inženýrství, 2011-04)
    Television broadcasting over IP networks (IPTV) is one of a number of network applications that are except of media distribution also interested in data acquisition from group of information resources of variable size. ...