Poslední příspěvky

  • Novel CMOS Bulk-driven Charge Pump for Ultra Low Input Voltage 

    Nagy, G.; Arbet, D.; Stopjakova, V.; Kovac, M. (Společnost pro radioelektronické inženýrství, 2016-06)
    In this paper, a novel bulk-driven cross-coupled charge pump designed in standard 90 nm CMOS technology is presented. The proposed charge pump is based on a dynamic threshold voltage inverter and is suitable for integrated ...
  • A Low-Dropout Voltage Regulator with a Fractional-Order Control 

    Kadlcik, L.; Horsky, P. (Společnost pro radioelektronické inženýrství, 2016-06)
    This paper presents a 5 V / 50 mA low-dropout voltage regulator (LDO). The LDO uses a fractional-order control for its regulation loop to achieve a high DC gain (for a tight DC regulation) while avoiding (for a good ...
  • k-Nearest Neighbors Algorithm in Profiling Power Analysis Attacks 

    Martinasek, Z.; Zeman, V.; Malina, L.; Martinasek, J. (Společnost pro radioelektronické inženýrství, 2016-06)
    Power analysis presents the typical example of successful attacks against trusted cryptographic devices such as RFID (Radio-Frequency IDentifications) and contact smart cards. In recent years, the cryptographic community ...
  • Segmentation of Moving Object Using Background Subtraction Method in Complex Environments 

    Kumar, S.; Yadav, J. S. (Společnost pro radioelektronické inženýrství, 2016-06)
    Background subtraction is an extensively used approach to localize the moving object in a video sequence. However, detecting an object under the spatiotemporal behavior of background such as rippling of water, moving curtain ...
  • A Geometric Approach to Group Delay Network Synthesis 

    Osuch, P. J.; Stander, T. (Společnost pro radioelektronické inženýrství, 2016-06)
    All-pass networks with prescribed group delay are used for analog signal processing and equalisation of transmission channels. The state-of-the-art methods for synthesising quasi-arbitrary group delay functions using ...
  • Analysis of Intermodulation Distortion in OFDM Based Transmitter Using EER Technique 

    Matejka, S. (Společnost pro radioelektronické inženýrství, 2016-06)
    During the last two decades, new digital modulation systems have appeared in the audio broadcasting. Such broadcasting systems require new transmitters’ concepts to enable the transmission of digitally modulated signals. ...
  • Efficient Design of Digital FIR Differentiator using $L_1$-Method 

    Aggarwal, A.; Rawat, T. K.; Kumar, M.; Upadhyay, D. K. (Společnost pro radioelektronické inženýrství, 2016-06)
    In this paper, an efficient design of FIR digital differentiator using the L1-optimality criterion is proposed. We present a technique based on the modified Newton method to solve the design problem so that the optimal ...
  • Triangle/Square Waveform Generator Using Area Efficient Hysteresis Comparator 

    Drinovsky, M.; Hospodka, J. (Společnost pro radioelektronické inženýrství, 2016-06)
    A function generator generating both square and triangle waveforms is proposed. The generator employs only one low area comparator with accurate hysteresis set by a bias current and a resistor. Oscillation frequency and ...
  • Design of 12-phase, 2-stage Harmonic Rejection Mixer for TV Tuners 

    Lee, D.; Jeong, H.; Lee, M. (Společnost pro radioelektronické inženýrství, 2016-06)
    A two-stage 12-phase harmonic rejection mixer (HRM) for TV tuners is proposed in order to reject the local oscillator (LO) harmonics up to the ninth order. The proposed weighing scheme for 12-phase, 2-stage harmonic mixing ...
  • High-Precision CMOS Analog Computational Circuits Based on a New Linearly Tunable OTA 

    Naderi Saatlo, A. (Společnost pro radioelektronické inženýrství, 2016-06)
    Implementation of CMOS current-mode analog computational circuits are presented in this paper. A new Linearly Tunable OTA is employed in a modified structure as a basic building block for implementation of the circuits ...
  • Grey Box Non-Linearities Modeling and Characterization of a BandPass BAW Filter 

    Mabrouk, M.; Boujemaa, M. A.; Choubani, F. (Společnost pro radioelektronické inženýrství, 2016-06)
    In this work, the non-linearities of a 3G/UMTS geared BandPass Bulk Acoustic Wave ladder filter composed of five resonators were modeled using non-linear modified Butterworth-Van Dyke model. The non-linear characteristics ...
  • Reduction of EMC Emissions in Mixed Signal Integrated Circuits with Embedded LIN Driver 

    Hartl, P.; Kuban, M.; Horsky, P. (Společnost pro radioelektronické inženýrství, 2016-06)
    This paper describes several methods for reduction of electromagnetic emissions (EME) of mixed signal integrated circuits (IC). The focus is on the impact that a LIN bus communication block has on a complex IC which contains ...
  • Improved Asymptotic Capacity Lower Bound for OFDM System with Compressed Sensing Channel Estimation for Bernoulli Gaussian Channel 

    Pejoski, S.; Kafedziski, V. (Společnost pro radioelektronické inženýrství, 2016-06)
    We propose an improved capacity lower bound for OFDM system with compressed sensing channel estimation for Bernoulli-Gaussian channel. We improve the known capacity lower bound which is based on Lasso compressed sensing ...
  • Micro-Doppler Effect of Extended Streamlined Targets Based on Sliding Scattering Centre Model 

    Bo Tang (Společnost pro radioelektronické inženýrství, 2016-06)
    The scattering center of extended streamlined targets can slide when the direction of radiation is changed. The sliding scattering center has influence on the micro-Doppler effect of micro-motion of the extended streamlined ...
  • Ultra-Broad Band Radar Cross Section Reduction of Waveguide Slot Antenna with Metamaterials 

    Qiang Fu; Cheng-Li Fan; Si-Jia Li; Gang Wang; Xiang-Yu Cao (Společnost pro radioelektronické inženýrství, 2016-06)
    To reduce the radar cross section of a waveguide slot antenna, a three-layer metamaterial is presented based on orthogonal double split-ring resonators. The absorption characteristics of three-layer metamaterial are ...
  • Frequency Agile Radial-Shaped Varactor-Loaded Reflectarray Cell 

    Venneri, F.; Costanzo, S.; Di Massa, G.; Borgia, A.; Raffo, A. (Společnost pro radioelektronické inženýrství, 2016-06)
    An equivalent circuit approach is adopted in this paper to analyze a novel varactor loaded phasing line, specifically designed to improve the frequency agility features of reconfigurable aperture-coupled reflectarray cell, ...
  • Reconfigurable Plasma Antenna Array by Using Fluorescent Tube for Wi-Fi Application 

    Ja’afar, H.; Ali, M. T.; Dagang, A. N.; Ibrahim, I. P.; Halili, N. A.; Zali, H. M. (Společnost pro radioelektronické inženýrství, 2016-06)
    This paper presents a new design of reconfigurable plasma antenna array using commercial fluorescent tube. A round shape reconfigurable plasma antenna array is proposed to collimate beam radiated by an omnidirectional ...
  • Performance of a Cognitive Relay Network under AF Relay Selection Scheme with Imperfect Channel Estimation 

    Prasad, B.; Roy, S. D.; Kundu, S. (Společnost pro radioelektronické inženýrství, 2016-06)
    In this paper outage performance of a secondary user (SU) is evaluated under amplify and forward (AF) relay selection scheme with an imperfect channel state information (CSI)while sharing spectrum in an underlay cognitive ...
  • Microwave Diplexer Purely Based on Direct Synchronous and Asynchronous Coupling 

    Nwajana, A. O.; Yeo, K. S. K. (Společnost pro radioelektronické inženýrství, 2016-06)
    A diplexer realized purely based on direct coupling is presented. No cross-coupling is involved in the design process. The microwave diplexer is achieved by coupling a dual-band bandpass filter onto two individual channel ...
  • A Compact Multiband BPF Using Step-impedance Resonators with Interdigital Capacitors 

    Meesomklin, S.; Chomtong, P.; Akkaraekthalin, P. (Společnost pro radioelektronické inženýrství, 2016-06)
    A compact multiband band-pass filter design for applications of GSM, Wi-MAX and WLAN systems is presented. The design is based on the resonant characteristics of step-impedance and interdigital capacitor resonators with ...

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