Now showing items 1-20 of 55

  • Planar Millimeter-Wave Antennas: A Comparative Study 

    Pítra, Kamil; Raida, Zbyněk (Společnost pro radioelektronické inženýrství, 2011-04)
    The paper describes the design and the experimental verification of three types of wideband antennas. Attention is turned to the bow-tie antenna, the Vivaldi antenna and the spiral antenna designed for the operation at ...
  • Topology Reduction for Approximate Symbolic Analysis 

    Kolka, Zdeněk; Vlk, Martin; Horák, 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 ...
  • Behavioral Modeling of Memcapacitor 

    Biolek, Dalibor; Biolek, Zdeněk; Biolková, 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 ...
  • Current-Mode CCII+ Based Oscillator Circuits using a Conventional and a Modified Wien-Bridge with All Capacitors Grounded 

    Bajer, J.; Lahiri, A.; Biolek, Dalibor (Společnost pro radioelektronické inženýrství, 2011-04)
    The paper deals with a pair of current-mode sine-wave oscillator circuits. Both these circuits are implemented using positive second-generation current conveyors (CCII+). The principle of the first oscillator is based on ...
  • Four-Phase Oscillators Employing Two Active Elements 

    Biolková, Viera; Bajer, J.; Biolek, Dalibor (Společnost pro radioelektronické inženýrství, 2011-04)
    Two novel four-phase voltage-output oscillators are proposed. These circuits can also be utilized as quadrature oscillators with floating outputs. Each oscillator employs two DO-CIBA (Differential Output- Current Inverter ...
  • Rural Optical-Propagation Measurements 

    Epple, B.; Henniger, H.; Kurz, S.; Haan, H. (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 ...
  • Modern Microelectronic Technologies in Fabrication of RFID Tags 

    Dziedzic, A.; Slobodzian, P. (Společnost pro radioelektronické inženýrství, 2011-04)
    This paper presents fabrication of RFID tags, especially antennas for HF band (13.56 MHz), on cheap flexible substrates. The physicochemical, geometrical, DC and AC electrical properties as well as long-term stability ...
  • All-Pass Sections with High Gain Opportunity 

    Ibrahim, M. A.; Minaei, S.; Yuce, E. (Společnost pro radioelektronické inženýrství, 2011-04)
    In this paper, two new circuits for realizing firstorder voltage-mode (VM) all-pass section (APS) with variable gain are presented. The first proposed filter uses a single differential difference current conveyor (DDCC), ...
  • Voltage-Mode All-Pass Filters Using Universal Voltage Conveyor and MOSFET-Based Electronic Resistors 

    Herencsar, N.; Koton, J.; Jerabek, J.; Vrba, K.; Cicekoglu, O. (Společnost pro radioelektronické inženýrství, 2011-04)
    The paper presents two novel realizations of voltage-mode first-order all-pass filters. Both circuits use single universal voltage conveyor (UVC), single capacitor, and two grounded resistors. Using the two NMOS transistors-based ...
  • A Location Privacy Extension for DVB-RCS 

    Aggelis, A.; Sarris, E. T.; Katos, V. (Společnost pro radioelektronické inženýrství, 2011-04)
    In this paper we studied the DVB-RCS (Return Channel through Satellite) standard from a privacy perspective and proposed an approach to incorporate a location privacy enhancing mechanism into the standard. Offering location ...
  • Microwave Impedance Measurement for Nanoelectronics 

    Randus, M.; Hoffmann, K. (Společnost pro radioelektronické inženýrství, 2011-04)
    The rapid progress in nanoelectronics showed an urgent need for microwave measurement of impedances extremely different from the 50Ω reference impedance of measurement instruments. In commonly used methods input impedance ...
  • 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 ...
  • Novel Designed CSRRs and Its Application in Tunable Tri-Band Bandpass Filter Based on Fractal Geometry 

    He-Xiu Xu; Guang-Ming Wang; Jian-Gang Liang (Společnost pro radioelektronické inženýrství, 2011-04)
    In this paper, we propose and research a novel miniaturized composite right/left handed transmission line (CRLH TL) cell based on revised complementary split ring resonators (CSRRs) for the first time. Novel CRLH TL cell ...
  • Analysis and Design Procedure of LVLP Sub-bandgap Reference - Development and Results 

    Urban, T.; Subrt, O.; Martinek, P. (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 ...
  • 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 ...
  • Elliptic and Hyperbolic Dielectric Lens Antennas in mm-Waves 

    Piksa, P.; Zvanovec, S.; Cerny, P. (Společnost pro radioelektronické inženýrství, 2011-04)
    Dielectric lenses can substantially improve antenna parameters, especially the planarity of radiated waves and the antenna gain. The paper deals with their application in millimeter-wave band. The main goal concerns the ...
  • Design of Discrete Frequency Coded Sequences using PSOCM for Target Detection with CAF 

    Rao, M. V. N.; Rajeswari, K. R. (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, J.; Pollak, P. (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 ...
  • Wavelet Transform Based Classification of Invasive Brain Computer Interface Data 

    Aydemir, O.; Kayikcioglu, T. (Společnost pro radioelektronické inženýrství, 2011-04)
    The input signals of brain computer interfaces may be either electroencephalogram recorded from scalp or electrocorticogram recorded with subdural electrodes. It is very important that the classifiers have the ability for ...
  • Improved Reception Schemes for Digital Video Broadcasting Based on Hierarchical Modulation 

    Sadough, S. M. S. (Společnost pro radioelektronické inženýrství, 2011-04)
    In this paper, we first provide an overview of Hierarchical Modulation (HM) along with the opportunities offered by this modulation in the context of the recent Digital Video Broadcasting standard for Satellite to Handheld ...