Browsing 2012/1 by Title

Now showing items 1-20 of 71

  • A 0.8 V T Network-Based 2.6 GHz Downconverter RFIC 

    Wu, Jian-Ming; Liou, Ching-Kuo; Chuang, Ching-Jui; Kuo, Yujin (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. ...

  • Analysis and Simulation of the Transmission Distortions of the Mobile Digital Television DVB-SH Part 2: Satellite Mode DVB-SH-B with TDM; Part 2: Satellite Mode DVB-SH-B with TDM 

    Polak, Ladislav; Kratochvil, Tomas (Společnost pro radioelektronické inženýrství, 2012-04)
    This paper deals with the second part of the latest digital TV standard DVB-SH (Digital Video Broadcasting – Satellite to Handhelds) with focus on utilization of its advantages for the next generation of mobile TV broadcasting. ...

  • Analysis of Temporal Effects in Quality Assessment of High Definition Video 

    Slanina, Martin; Kratochvil, Tomas; Polak, Ladislav; Ricny, Vaclav (Společnost pro radioelektronické inženýrství, 2012-04)
    The paper deals with the temporal properties of a~scoring session when assessing the subjective quality of full HD video sequences using the continuous video quality tests. The performed experiment uses a modification of ...

  • Antenna Miniaturization Based on Supperscattering Effect 

    Yang, Jing-jing; Huang, Ming; Mao, Fu-chun; Sun, Jing (Společnost pro radioelektronické inženýrství, 2012-04)
    Antennas are essential components of all existing radio equipments. The miniaturization of antenna is a key issue of antenna technology. Based on supperscattering effect, we found that when a small horn antenna is located ...

  • Application of Iterative Fourier Method in Cylindrical Phaseless Antenna Measurement Technique 

    Puskely, Jan (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 ...

  • Audible Aliasing Distortion in Digital Audio Synthesis 

    Schimmel, Jiri (Společnost pro radioelektronické inženýrství, 2012-04)
    This paper deals with aliasing distortion in digital audio signal synthesis of classic periodic waveforms with infinite Fourier series, for electronic musical instruments. When these waveforms are generated in the digital ...

  • Band-monitoring Payload for a CubeSat Satellite 

    Vagner, Petr; Urbanec, Tomas; Kasal, Miroslav (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 ...

  • Catalog of Realizations for DXCCII using Commercially Available ICs and Applications 

    Maheshwari, Sudhanshu; Ansari, Mohd. Samar (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 ...

  • Clutter Reduction Based on Principal Component Analysis Technique for Hidden Objects Detection 

    Kabourek, Vaclav; Cerny, Petr; Mazanek, Milos (Společnost pro radioelektronické inženýrství, 2012-04)
    This paper brings a brief overview of the statistical method called Principal Component Analysis (PCA). It is used for clutter reduction in detection of hidden objects, targets hidden behind walls, buried landmines, etc. ...

  • Comments and Remarks over Classic Linear Loop-Gain Method for Oscillator Design and Analysis. New Proposed Method Based on NDF/RRT 

    Luis Jimenez-Martin, Jose; Gonzalez-Posadas, Vicente; Parra-Cerrada, Angel; Enrique Garcia-Munoz, Luis; Segovia-Vargas, Daniel (Společnost pro radioelektronické inženýrství, 2012-04)
    Present paper describes a new method for designing oscillators based on the Normalized Determinant Function (NDF) and Return Relations (RRT ). First a review of the loop-gain method will be performed, showing pros, cons ...

  • Communication and Powering Scheme for Wireless and Battery-Less Measurement 

    Boura, Adam; Husak, Miroslav (Společnost pro radioelektronické inženýrství, 2012-04)
    The paper presents solution for wireless and battery-less measurement in the enclosed areas. The principle is based on passive RFID, nevertheless this paper is focused on high power-demanding applications such as MEMS ...

  • Comparison of Weighted Sum Fitness Functions for PSO Optimization of Wideband Medium-gain Antennas 

    Ma, Zhongkun; Vandenbosch, Guy A. E. (Společnost pro radioelektronické inženýrství, 2012-04)
    In recent years PSO (Particle Swarm Optimization) has been successfully applied in antenna design. It is well-known that the cost function has to be carefully chosen in accordance with the requirements in order to reach ...

  • A Contribution to Nyquist-Rate ADC Modeling - Detailed Algorithm Description 

    Zidek, Jan; Subrt, Ondrej; Valenta, Milan; Martinek, Pravoslav (Společnost pro radioelektronické inženýrství, 2012-04)
    In this article, the innovative ADC modeling algorithm is described. It is well suitable for nyquist-rate ADC error back annotation. This algorithm is the next step of building a support tool for IC design engineers. The ...

  • Correction of Thermal Deviations of Fabry-Perot Resonator Based Measurements of Specific Gases in Millimeter Wave Bands 

    Libich, Jiri; Dvorak, Petr; Piksa, Petr; Zvanovec, Stanislav (Společnost pro radioelektronické inženýrství, 2012-04)
    Due to the thermal expansivity of the material used in the Fabry-Perot resonator mirrors, the resonator cavity length can change and this might therefore have an impact on the resonant frequency during high-resolution ...

  • Current-mode Biquadratic Universal Filter Design with Two Terminal Unity Gain Cells 

    Alpaslan, Halil; Yuce, Erkan (Společnost pro radioelektronické inženýrství, 2012-04)
    A grounded parallel lossy active inductor and two current-mode (CM) universal filters are presented in this paper. All the circuits use two voltage followers (VFs) and a current follower (CF). The parallel lossy active ...

  • Current-Processing Current-Controlled Universal Biquad Filter 

    Singh, Sajai Vir; Maheshwari, Sudhanshu (Společnost pro radioelektronické inženýrství, 2012-04)
    This paper presents a current-processing current-controlled universal biquad filter. The proposed filter employs only two current controlled current conveyor transconductance amplifiers (CCCCTAs) and two grounded capacitors. ...

  • Delay Estimator and Improved Proportionate Multi-Delay Adaptive Filtering Algorithm 

    Verteletskaya, Ekaterina; Sakhnov, Kirill; Simak, Boris (Společnost pro radioelektronické inženýrství, 2012-04)
    This paper pertains to speech and acoustic signal processing, and particularly to a determination of echo path delay and operation of echo cancellers. To cancel long echoes, the number of weights in a conventional adaptive ...

  • Design and Characterization of CMOS On-Chip Antennas for 60 GHz Communications 

    Titz, Diane; Ben Abdeljelil, Fand; Jan, Sebastien; Ferrero, Fabien; Luxey, Cyril; Brachat, Patrice; Jacquemod, Gilles (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 ...

  • Design and Fabrication of 3D Electrostatic Energy Harvester 

    Janicek, Vladimir; Husak, Miroslav; Jakovenko, Jiri; Formanek, Jan (Společnost pro radioelektronické inženýrství, 2012-04)
    This paper discusses the design of an electrostatic generator, power supply component of the self-powered microsystem, which is able to provide enough energy to power smart sensor chains or if necessary also other electronic ...

  • Design of Compact Planar Diplexer Based on Novel Spiral-Based Resonators 

    Lu, Ke; Wang, Guang-Ming; Xu, Hai-yang; Yin, Xiong (Společnost pro radioelektronické inženýrství, 2012-04)
    A miniaturized planar diplexer utilizing the novel spiral-based resonators is proposed. The given cell which is initially proposed in this article is composed of two separated rectangular spirals which are asymmetrical to ...