Now showing items 1-20 of 71

  • Study of Adjustable Gains for Control of Oscillation Frequency and Oscillation Condition in 3R-2C Oscillator 

    Sotner, R.; Jerabek, J.; Herencsar, N.; Hrubos, Z.; Dostal, T.; Vrba, K. (Společnost pro radioelektronické inženýrství, 2012-04)
    An idea of adjustable gain in order to obtain controllable features is very useful for design of tuneable oscillators. Several active elements with adjustable properties (current and voltage gain) are discussed in this ...
  • Testing QoE in Different 3D HDTV Technologies 

    Slanina, M.; Kratochvil, T.; Ricny, V.; Bolecek, L.; Kaller, O.; Polak, L. (Společnost pro radioelektronické inženýrství, 2012-04)
    The three dimensional (3D) display technology has started flooding the consumer television market. There is a number of different systems available with different marketing strategies and different advertised advantages. ...
  • Overview of Parallel Platforms for Common High Performance Computing 

    Fryza, T.; Svobodova, J.; Adamec, F.; Marsalek, R.; Prokopec, J. (Společnost pro radioelektronické inženýrství, 2012-04)
    The paper deals with various parallel platforms used for high performance computing in the signal processing domain. More precisely, the methods exploiting the multicores central processing units such as message passing ...
  • Electromagnetic Band Gap Structures: Practical Tips and Advice for Antenna Engineers 

    Kovacs, P.; Urbanec, T. (Společnost pro radioelektronické inženýrství, 2012-04)
    In this paper we discuss the use of electromagnetic band gap (EBG) structures in antenna engineering from a practical point of view. Our aim is to point out the most common mistakes and myths related to design, analysis ...
  • Application of Iterative Fourier Method in Cylindrical Phaseless Antenna Measurement Technique 

    Puskely, J. (Společnost pro radioelektronické inženýrství, 2012-04)
    The Fourier iterative algorithm (FIA) is a well-known planar phase retrieval method. The algorithm uses conventional amplitude measurements on two surfaces placed in different distances from the measured antenna. In this ...
  • In-system Jitter Measurement Based on Blind Oversampling Data Recovery 

    Kubicek, M.; Kolka, Zdeněk (Společnost pro radioelektronické inženýrství, 2012-04)
    The paper describes a novel method for simple estimation of jitter contained in a received digital signal. The main objective of our research was to enable a non-invasive measurement of data link properties during a regular ...
  • Band-monitoring Payload for a CubeSat Satellite 

    Vagner, P.; Urbanec, T.; Kasal, M. (Společnost pro radioelektronické inženýrství, 2012-04)
    During changing sun activity, the ionosphere is responding accordingly and therefore it is interesting to observe the propagation behavior of shortwave bands. For the above mentioned purpose we have designed a band-monitoring ...
  • Variance based OFDM frame synchronization 

    Fedra, Z.; Dimitrijevic, B.; Milosevic, N.; Antic, D.; Nikolic, Z. (Společnost pro radioelektronické inženýrství, 2012-04)
    The paper deals with a new frame synchronization scheme for OFDM systems and calculates the complexity of this scheme. The scheme is based on the computing of the detection window variance. The variance is computed in two ...
  • Measurement of the Structure Constant of Refractivity at Optical Wavelengths Using a Scintillometer 

    Grabner, M.; Kvicera, V. (Společnost pro radioelektronické inženýrství, 2012-04)
    The structure constant of the atmospheric refractive index is used for characterizing the turbulence strength and for predicting the scintillation of electromagnetic waves in atmosphere. It is measured continuously in ...
  • Reliable and Efficient Procedure for Steady-State Analysis of Nonautonomous and Autonomous Systems 

    Dobes, J.; Biolková, Viera (Společnost pro radioelektronické inženýrství, 2012-04)
    The majority of contemporary design tools do not still contain steady-state algorithms, especially for the autonomous systems. This is mainly caused by insufficient accuracy of the algorithm for numerical integration, but ...
  • Design and Characterization of CMOS On-Chip Antennas for 60 GHz Communications 

    Titz, D.; Ben Abdeljelil, F.; Jan, S.; Ferrero, F.; Luxey, C.; Brachat, P.; Jacquemod, G. (Společnost pro radioelektronické inženýrství, 2012-04)
    In this paper, we present the design and the measurement of two antennas realized on a 130nm CMOS process. They both radiate in the 60 GHz band and are dedicated to Wireless Personal Area Network (WPAN) applications. The ...
  • Economic Galileo E5 Receiver 

    Kovar, P.; Kacmarik, P.; Vejrazka, F. (Společnost pro radioelektronické inženýrství, 2012-04)
    The Galileo system introduces an extremely wideband civil E5 signal for high precision navigation. The structure of the receiver for the E5 signal is complicated due to the signal complexity and the large bandwidth. It is ...
  • A 0.8 V T Network-Based 2.6 GHz Downconverter RFIC 

    Wu, J.-M.; Liou, C.-K.; Chuang, C.-J.; Kuo, Y. (Společnost pro radioelektronické inženýrství, 2012-04)
    A 2.6 GHz downconverter RFIC is designed and implemented using a 0.18 μm CMOS standard process. An important goal of the design is to achieve the high linearity that is required in WiMAX systems with a low supply voltage. ...
  • Two-port Network Transfer Function for Power Line Topology Modeling 

    Mlynek, P.; Misurec, J.; Koutny, M.; Silhavy, P. (Společnost pro radioelektronické inženýrství, 2012-04)
    This paper deals with modeling of power line communication. A two-port network model is theoretically described and compared with measurement. A substantial part is focused on the mathematical description of distri¬bution ...
  • Immediate Analysis of Periodic Steady States in Switched DC-DC Converters via SPICE 

    Biolek, Dalibor; Biolková, Viera; Kolka, Zdeněk (Společnost pro radioelektronické inženýrství, 2012-04)
    The method of immediate analysis of periodic steady states in switched DC-DC converters operating in the continuous current mode is described. The initial conditions, which correspond to the periodic steady state, are found ...
  • New CMOS Realization of Voltage Differencing Buffered Amplifier and Its Biquad Filter Applications 

    Kaçar, F.; Yeşil, A.; Noori, A. (Společnost pro radioelektronické inženýrství, 2012-04)
    In this paper, new biquad filter configuration using a recently introduced active element, namely Voltage Differencing Buffered Amplifier (VDBA), is proposed. This block has high impedance input terminals and low impedance ...
  • Investigation of Accurate Far-End Crosstalk Modeling in Metallic Cables 

    Lafata, P. (Společnost pro radioelektronické inženýrství, 2012-04)
    Crosstalk and especially far-end crosstalk (FEXT) represents the most serious source of disturbance in today’s digital transmission systems. It mostly limits the information capacity of current xDSL digital subscriber lines ...
  • Determination of More Realistic Target 95% Values of Post Selection Delay in Modern Telephone Networks 

    Matić, V.; Lebl, A.; Mitić, D.; Markov, Z. (Společnost pro radioelektronické inženýrství, 2012-04)
    In this paper we present the telephone network and the recommendations, dealing with the greatest target values of Post Selection Delay. It is shown that the Post Selection Delay is the sum of the delays between the network ...
  • Realization of Resistorless Lossless Positive and Negative Grounded Inductor Simulators Using Single ZC-CCCITA 

    Herencsar, N.; Lahiri, A.; Koton, J.; Vrba, K.; Metin, B. (Společnost pro radioelektronické inženýrství, 2012-04)
    This paper is in continuation with the very recent work of Prasad et al. [14], wherein new realizations of grounded and floating positive inductor simulator using current differencing transconductance amplifier (CDTA) are ...
  • Catalog of Realizations for DXCCII using Commercially Available ICs and Applications 

    Maheshwari, S.; Ansari, M. S. (Společnost pro radioelektronické inženýrství, 2012-04)
    This paper presents fifteen distinct practical realizations for dual-X second generation current conveyor (DXCCII) using commercially available integrated circuits. Detailed comparisons and results are presented to verify ...