Now showing items 11-28 of 28

  • 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 ...
  • Generalized Propagation Channel Model for 2GHz Low Elevation Links Using a Ray-tracing Method 

    Zeleny, J.; Perez-Fontan, F.; Pechač, Pavel (Společnost pro radioelektronické inženýrství, 2015-12)
    Unmanned Aerial Vehicles (UAV) will increasingly be used for responding to emergencies or for law enforcement in civil surveillance applications. Transferring the enormous amounts of information from UAV-mounted cameras ...
  • 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 ...
  • Interference Suppression Performance of Automotive UWB Radars Using Pseudo Random Sequences 

    Pasya, I.; Kato, H.; Kobayashi, T. (Společnost pro radioelektronické inženýrství, 2015-12)
    Ultra wideband (UWB) automotive radars have attracted attention from the viewpoint of reducing traffic accidents. The performance of automotive radars may be degraded by interference from nearby radars using the same ...
  • Ku Band Rotary Joint Design for SNG Vehicles 

    Torpi,H.; Bostan, S. M. (Společnost pro radioelektronické inženýrství, 2015-12)
    A wideband I-type rectangular waveguide rotary joint (RJ) is designed, simulated and built. It has an excellent performance over the whole Ku Band (10.7-14.5 GHz) where the return loss is less than -23 dB at its highest ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • A Novel Diversity Receiver Structure for Severe Fading and Frequency Offset Conditions 

    Dimitrijevic, B.; Krstic, V.; Nikolic, B. (Společnost pro radioelektronické inženýrství, 2015-12)
    This paper presents a novel diversity receiver of MPSK signal in fading channel in the presence of the carrier frequency offset. As a part of this receiver, a new algorithm for the estimation of the combining coefficients ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • A Robust Color Image Watermarking Scheme Using Entropy and QR Decomposition 

    Laur, L.; Rasti, P.; Agoyi, M.; Anbarjafari, G. (Společnost pro radioelektronické inženýrství, 2015-12)
    Internet has affected our everyday life drastically. Expansive volumes of information are exchanged over the Internet consistently which causes numerous security concerns. Issues like content identification, document and ...
  • 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 ...
  • 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 ...