Now showing items 1-20 of 28

  • Electronically Tunable Current-mode High-order Ladder Low-pass Filters Based on CMOS Technology 

    Kunto, T.; Prommee, P.; Abuelma'atti, M. T. (Společnost pro radioelektronické inženýrství, 2015-12)
    This paper describes the design of current mode low-pass ladder filters based on CMOS technology. The filters are derived from passive RLC ladder filter prototypes using new CMOS lossy and lossless integrators. The all-pole ...
  • Envelope Factorization with Partial Elimination and Recombination, EF-PER, a New Linear RF Architecture 

    Diet, A.; Baudoin, G.; Lasaulce, S. (Společnost pro radioelektronické inženýrství, 2015-12)
    In this paper, a new architecture for efficient linear radio frequency transmitters is proposed; it includes envelope-tracking (ET) and envelope-elimination-and-restoration (EER) architectures as special instances. The ...
  • Large Core Three Branch Polymer Power Splitters 

    Prajzler, V.; Mastera, R.; Spirkova, J. (Společnost pro radioelektronické inženýrství, 2015-12)
    We report about three branch large core polymer power splitters optimized for connecting standard plastic optical fibers. A new point of the design is insertion of a rectangle-shaped spacing between the input and the central ...
  • Multi-Core DSP Based Parallel Architecture for FMCW SAR Real-Time Imaging 

    Gu, C. F.; Chang, W. G.; Li, X. Y.; Liu, Z. H. (Společnost pro radioelektronické inženýrství, 2015-12)
    This paper presents an efficient parallel processing architecture using multi-core Digital Signal Processor (DSP) to improve the capability of real-time imaging for Frequency Modulated Continuous Wave Synthetic Aperture ...
  • Low-profile Circularly Polarized Antenna Exploiting Fabry-Perot Resonator Principle 

    Pítra, Kamil; Raida, Zbyněk; Lacik, J. (Společnost pro radioelektronické inženýrství, 2015-12)
    We designed a patch antenna surrounded by a mushroom-like electromagnetic band-gap (EBG) structure and completed it by a partially reflective surface (PRS). EBG suppresses surface waves and creates the bottom wall of the ...
  • Quasi-Coherent Noise Jamming to LFM Radar Based on Pseudo-random Sequence Phase-modulation 

    Tai, N.; Pan, Y. J.; Yuan, N. C. (Společnost pro radioelektronické inženýrství, 2015-12)
    A novel quasi-coherent noise jamming method is proposed against linear frequency modulation (LFM) signal and pulse compression radar. Based on the structure of digital radio frequency memory (DRFM), the jamming signal is ...
  • Research of the Defects in Anesthetic Masks 

    Laucka, A.; Andriukaitis, D. (Společnost pro radioelektronické inženýrství, 2015-12)
    The article concerns the computer-assisted vision system created for the detection of the disposable anesthetic respiratory masks. This article provides the classification of defects which may be common to both rubber and ...
  • Pascal-Interpolation-Based Noninteger Delay Filter and Low-Complexity Realization 

    Soontornwong, P.; Chivapreecha, S. (Společnost pro radioelektronické inženýrství, 2015-12)
    This paper proposes a new method for designing the polynomial-interpolation-type noninteger-delay filter with a new structure formulation. Since the design formulation and the new realization structure are based on the ...
  • Optimization of Far-Field Antenna Range 

    Cerny, O.; Dolecek, R.; Kopecky, P.; Schejbal, V.; Zavodny, V. (Společnost pro radioelektronické inženýrství, 2015-12)
    Measurements of test antennas are performed on antenna ranges. The operated microwave far-field outdoor range was built-up in 1970’s and therefore it was not appropriate for the today measurements. Thus, it was decided to ...
  • Video Tracking for Visual Degraded Aerial Vehicle with H-PMHT 

    Pakfiliz, A. G. (Společnost pro radioelektronické inženýrství, 2015-12)
    The work presented in this paper describes a novel approach for automatic video tracking of visual degraded air vehicles in daylight with sky background. The offered and applied video object tracking method is based on ...
  • Energy Efficient Power Allocation for Distributed Antenna System over Shadowed Nakagami Fading Channel 

    Ying Wang; Xiangbin Yu; Yang Li; Binbin Wu (Společnost pro radioelektronické inženýrství, 2015-12)
    In this paper, the energy efficiency (EE) of downlink distributed antenna system (DAS) with multiple receive antennas is investigated over composite fading channel that takes the path loss, shadow fading and Nakagami-m ...
  • Space-Time-Frequency Diversity for OFDM-Based Indoor Power Line Communication 

    Hacioglu, G. (Společnost pro radioelektronické inženýrství, 2015-12)
    In this paper, full rate space-time-frequency coding applied to orthogonal frequency division multiplexing based power line communication systems. The proposed systems yield both time and frequency diversity and keep ...
  • Development of a Symmetric Ring Junction as a Four-Port Reflectometer for Complex Reflection Coefficient Measurements 

    Lee, K.Y.; Chung, B. K.; You, K. Y.; Cheng, E. M.; Abbas, Z. (Společnost pro radioelektronické inženýrství, 2015-12)
    Six-port reflectometer is well-known for its ability to measure magnitude and phase-shift of microwave signal using four power detectors that perform magnitude-only measurements. This paper presents the development of an ...
  • A Microwave Metamaterial Inspired Sensor for Non-Invasive Blood Glucose Monitoring 

    Vrba, J.; Vrba, D. (Společnost pro radioelektronické inženýrství, 2015-12)
    In this paper, a microwave sensor based on an artificial transmission line is proposed for non-invasive blood glucose monitoring. A corresponding numerical model of the sensor implemented in microstrip technology is created ...
  • Power Dissipation of Memristor-Based Relaxation Oscillators 

    Fouda, M. E.; Radwan, A. G. (Společnost pro radioelektronické inženýrství, 2015-12)
    Recently, many reactance-less memristive relaxation oscillators were introduced, where the charging and discharging processes depend on memristors. In this paper, we investigate the power dissipation in different memristor ...
  • High Voltage Coil Current Sensor for DC-DC Converters Employing DDCC 

    Drinovsky, M.; Hospodka, J. (Společnost pro radioelektronické inženýrství, 2015-12)
    Current sensor is an integral part of every switching converter. It is used for over-current protection, regulation and in case of multiphase converters for balancing. A new high voltage current sensor for coil-based current ...
  • Cross-Layer Combining of Adaptive Modulation and Truncated ARQ in Multichannel Beamforming MIMO Systems 

    Ivanis, P.; Drajic, D.; Brkic, S. (Společnost pro radioelektronické inženýrství, 2015-12)
    In this study the authors provide a cross-layer design of multiple-input-multiple-output (MIMO) systems, with the aim to maximize spectral efficiency. We consider MIMO systems based on a multichannel beamforming technique ...
  • Analysis of Coexistence of DRM Plus and FM Broadcasting Systems 

    Ulovec, K. (Společnost pro radioelektronické inženýrství, 2015-12)
    This paper deals with DRM (Digital Radio Mondiale) Plus and FM (Frequency Modulation) radio broadcasting systems coexistence. It brings results based on measurement of mutual interferences of each to other. Minimal necessary ...
  • Efficient Simulation for Fixed-Receiver Bistatic SAR with Time and Frequency Synchronization Errors 

    Feifei Yan; Wenge Chang; Xiangyang Li (Společnost pro radioelektronické inženýrství, 2015-12)
    Time and frequency synchronization is the key technique of bistatic synthetic aperture radar (BiSAR) system, and raw data simulation is an effective tool for verifying the time and frequency synchronization techniques. ...
  • Generalized Analysis Method for a Class of Novel Wideband Loaded-Stub Phase Shifters 

    Sensong An; Badar Muneer; Qi Zhu (Společnost pro radioelektronické inženýrství, 2015-12)
    In this paper, an analysis method of wideband loaded-stub phase shifters and a fast designing procedure is presented. These kinds of phase shifters use a transmission line loaded with one or two open stubs and a reference ...