• Characterization of Nonlinear Integrated Capacitors 

    Sutory, T.; Kolka, Zdeněk (Společnost pro radioelektronické inženýrství, 2008-12)
    The paper deals with a modified CBCM (Charge-Based Capacitance Measurements) method for nonlinear capacitance characterization. The method is characterized by high resolution although it is based on equipment found in any ...
  • 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 ...
  • 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 ...
  • Active Elements for Analog Signal Processing: Classification, Review, and New Proposals 

    Biolek, Dalibor; Senani, R.; Biolková, Viera; Kolka, Zdeněk (Společnost pro radioelektronické inženýrství, 2008-12)
    In the paper, an analysis of the state-of-the-art of active elements for analog signal processing is presented which support – in contrast to the conventional operational amplifiers – not only the voltage-mode but also the ...
  • 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 ...
  • A Simple Current-Mode Quadrature Oscillator Using Single CDTA 

    Jaikla, W.; Siripruchyanun, M.; Bajer, J.; Biolek, Dalibor (Společnost pro radioelektronické inženýrství, 2008-12)
    This article presents a simple current-mode quadrature oscillator using a single Current Differencing Transconductance Amplifier (CDTA) as the active element. The oscillation condition and oscillation frequency can be ...
  • Coexistence of Terrestrial and HAP 3G Networks during Disaster Scenarios 

    Holis, J.; Pechač, Pavel (Společnost pro radioelektronické inženýrství, 2008-12)
    The aim of this paper is to show the possible coexistence of an HAP and a terrestrial component of 3G networks at a single carrier frequency. The main goal is to compare the basic parameters of terrestrial and HAP com-ponent ...
  • 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 ...
  • Adaptive Compensation of the Nonlinear Distortions in Optical Transmitters Using Predistortion 

    Panagiev, O. (Společnost pro radioelektronické inženýrství, 2008-12)
    The described method refers to compensation of nonlinear distortions, originating in laser diodes, used in wideband SCM-communication systems. Its essence is presenting in forming of a function that is opposite of the ...
  • 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 ...
  • Using Volterra Series for an Estimation of Fundamental Intermodulation Products 

    Dobes, J. (Společnost pro radioelektronické inženýrství, 2008-12)
    The most precise procedure for determining the intermodulation products is to find a steady-state period of the signal first, and then to calculate its spectrum by means of the fast Fourier transform. However, this method ...
  • A Monotonic Precise Current DAC for Sensor Applications 

    Horsky, P. (Společnost pro radioelektronické inženýrství, 2008-12)
    In this paper a 17 bit monotonic precise current DAC for sensor applications is described. It is working in a harsh automotive environment in a wide temperature range with high output voltage swing and low current consumption. ...
  • Universal Generator of Ultra-Wideband Pulses 

    Protiva, P.; Mrkvica, J.; Machac, J. (Společnost pro radioelektronické inženýrství, 2008-12)
    An Ultra-Wideband (UWB) subnanosecond pulse generator is described in this paper. High amplitude Gaussian pulses are generated by a Step Recovery Diode (SRD) included in a novel pulse forming circuit. The pro-posed circuit ...
  • 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 ...
  • EMC Increasing of PWM Rectifier in Comparison with Classical Rectifier 

    Lettl, J.; Dolecek, R. (Společnost pro radioelektronické inženýrství, 2008-12)
    Pulse width modulated rectifier is a very popular topic nowadays. The modern industrial production demands continuous and lossless conversion of electrical energy parameters. This need leads to wide spread of power ...
  • Wideband Phase Retrieval Technique from Amplitude-Only Near-Field Data 

    Costanzo, S.; Massa, G. D. (Společnost pro radioelektronické inženýrství, 2008-12)
    A wideband frequency behavior is demonstrated for a phaseless near-field technique of basically interferometric approach, which uses two identical probes interfering each other through a microstrip circuit and performing ...
  • 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 ...
  • 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 ...
  • Electronically Tunable Multi-Terminal Floating Nullor and Its Applications 

    Tangsrirat, W. (Společnost pro radioelektronické inženýrství, 2008-12)
    A realization scheme of an electronically tun- able multi-terminal floating nullor (ET-MTFN) is de- scribed in this paper. The proposed circuit mainly employs a transconductance amplifier, an improved translinear cell, two ...