Now showing items 1-20 of 27

  • Applications of Graphene at Microwave Frequencies 

    Bozzi, M.; Pierantoni, L.; Bellucci, S. (Společnost pro radioelektronické inženýrství, 2015-09)
    In view to the epochal scenarios that nanotechnology discloses, nano-electronics has the potential to introduce a paradigm shift in electronic systems design similar to that of the transition from vacuum tubes to semiconductor ...
  • A Compact 1:4 Lossless T-Junction Power Divider Using Open Complementary Split Ring Resonator 

    Phani Kumar, K. V.; Karthikeyan, S. S. (Společnost pro radioelektronické inženýrství, 2015-09)
    This paper presents the size miniaturized and harmonic suppressed lossless 1:4 T-junction unequal power divider using an open complementary split ring resonator (OCSRR). By embedding the OCSRR structure in the microstrip ...
  • A Lowpass Filter with Sharp Roll - off and High Relative Stopband Bandwidth Using Asymmetric High - Low Impedance Patches 

    Abdipour, As.; Abdipour, Ar.; Lotfi, S. (Společnost pro radioelektronické inženýrství, 2015-09)
    In this letter, a microstrip lowpass filter with -3 dB cut-off frequency at 1.286 GHz is proposed. By using two main resonators which are placed symmetrically around Y axis a sharp roll-off rate (250 dB/GHz) is obtained. ...
  • Antenna Design for Semi-Passive UHF RFID Transponder with Energy Harvester 

    Jankowski-Mihulowicz, P.; Kawalec, D.; Weglarski, M. (Společnost pro radioelektronické inženýrství, 2015-09)
    A novel microstrip antenna which is dedicated to UHF semi-passive RFID transponders with an energy harvester is presented in this paper. The antenna structure designed and simulated by using Mentor Graphics HyperLynx 3D ...
  • A Quasi-Lumped Element Series Array Resonator Antenna 

    Olokede, S. S. (Společnost pro radioelektronické inženýrství, 2015-09)
    This paper presents a 6-element series array quasi-lumped element resonator antenna. The proposed antenna employs an interdigital capacitor in parallel with a straight strip conductor whose centre finger is shorted across ...
  • A Three-Pole Substrate Integrated Waveguide Bandpass Filter Using New Coupling Scheme 

    Guan, X.; Yuan, Y.; Liu, H.; Huang, W. (Společnost pro radioelektronické inženýrství, 2015-09)
    A novel three-pole substrate integrated waveguide (SIW) bandpass filter (BPF) using new coupling scheme is proposed in this paper. Two high order degenerate modes (TE102 and TE201) of a square SIW cavity and a dominant ...
  • Precise Characterization and Multiobjective Optimization of Low Noise Amplifiers 

    Dobes, J.; Michal, J.; Popp, J.; Cerny, D.; Grabner, M.; Vejrazka, F.; Kakona, J.; Matejka, S. (Společnost pro radioelektronické inženýrství, 2015-09)
    Although practically all function blocks of the satellite navigation receivers are realized using the CMOS digital integrated circuits, it is appropriate to create a separate low noise antenna preamplifier based on a low ...
  • Textile Diamond Dipole and Artificial Magnetic Conductor Performance under Bending, Wetness and Specific Absorption Rate Measurements 

    Kamardin, K.; Rahim, M. K. A.; Hall, P. S.; Samsuri, N. A.; Jalil, M. E.; Abd Malek, M. F. (Společnost pro radioelektronické inženýrství, 2015-09)
    Textile diamond dipole and Artificial Magnetic Conductor (AMC) have been proposed and tested under wearable and body centric measurements. The proposed antenna and AMC sheet are entirely made of textiles for both the ...
  • Compact and Wide Stopband Lowpass Filter Using Open Complementary Split Ring Resonator and Defected Ground Structure 

    Karthikeyan, S. S.; Kshetrimayum, R. S. (Společnost pro radioelektronické inženýrství, 2015-09)
    A compact (0.16 λg x 0.08 λg) and wide stop¬band lowpass filter design using open complementary split ring resonator (OCSRR) and defected ground structure (DGS) is presented in this paper. Low pass filter is con-structed ...
  • New Concept of PLC Modems: Multi-Carrier System for Frequency Selective Slow-Fading Channels Based on Layered SCCC Turbocodes 

    Zavrtalek, J.; Kekrt, D.; Hrad, J. (Společnost pro radioelektronické inženýrství, 2015-09)
    The article introduces a novel concept of a PLC modem as a complement to the existing G3 and PRIME standards for communications using medium- or high-voltage overhead or cable lines. The proposed concept is based on the ...
  • An Ultra-fast DOA Estimator with Circular Array Interferometer Using Lookup Table Method 

    Pan, Y. J.; Zhang, X. F.; Xie, S. Y.; Huang, J. J.; Yuan, N. C. (Společnost pro radioelektronické inženýrství, 2015-09)
    The time-consuming phase ambiguity resolution makes the uniform circular array (UCA) interferometer not suitable for real-time direction-of-arrival (DOA) estimation. This paper introduces the lookup table (LUT) method to ...
  • Multi-Objective Synthesis of Filtering Dipole Array Based on Tuning-Space Mapping 

    Vsetula, P.; Raida, Zbyněk; Lacik, J. (Společnost pro radioelektronické inženýrství, 2015-09)
    In the paper, we apply tuning-space mapping to multi-objective synthesis of a filtering antenna. The antenna is going to be implemented as a planar dipole array with serial feeding. Thanks to the multi-objective approach, ...
  • Sparse Localization with a Mobile Beacon Based on LU Decomposition in Wireless Sensor Networks 

    Chunhui Zhao; Yunlong Xu; Hui Huang (Společnost pro radioelektronické inženýrství, 2015-09)
    Node localization is the core in wireless sensor network. It can be solved by powerful beacons, which are equipped with global positioning system devices to know their location information. In this article, we present a ...
  • Novel Planar Horn Antenna for 75/85 GHz Experimental Wireless Link 

    Puskely, J.; Urbanec, T.; Mikulasek, T.; Raida, Zbyněk; Rericha, V.; Bartyzal, J. (Společnost pro radioelektronické inženýrství, 2015-09)
    In the paper, we describe a novel H-plane horn antenna for an experi¬mental wireless link operating in frequency bands 71 to 76 GHz and 81 to 86 GHz. The horn antenna was designed considering a substrate integrated waveguide ...
  • Model for Estimation of Bounds in Digital Coding of Seabed Images 

    Samcovic, A. (Společnost pro radioelektronické inženýrství, 2015-09)
    This paper proposes the novel model for estimation of bounds in digital coding of images. Entropy coding of images is exploited to measure the useful information content of the data. The bit rate achieved by reversible ...
  • Unambiguous Acquisition and Tracking Technique for General BOC Signals 

    Shen, F.; Xu, G.; Cheong, J. W.; Feng, H. (Společnost pro radioelektronické inženýrství, 2015-09)
    This article presents a new unambiguous acquisition and tracking technique for general Binary Offset Carrier (BOC) ranging signals, which will be used in modern GPS, European Galileo system and Chinese BeiDou system. The ...
  • Variations of Boundary Surface in Chua’s Circuit 

    Guzan, M. (Společnost pro radioelektronické inženýrství, 2015-09)
    The paper compares the boundary surfaces with help of cross-sections in three projection planes, for the four changes of Chua’s circuit parameters. It is known that due to changing the parameters, the Chua’s circuit can ...
  • Space Alignment Based on Regularized Inversion Precoding in Cognitive Transmission 

    Yao, R.; Li, G.; Xu, J.; Wang, L. (Společnost pro radioelektronické inženýrství, 2015-09)
    For a two-tier Multiple-Input Multiple-Output (MIMO) cognitive network with common receiver, the precoding matrix has a compact relationship with the capacity performance in the unlicensed secondary system. To increase the ...
  • A New Protocol for Cooperative Spectrum Sharing in Mobile Cognitive Radio Networks 

    Hosseini, S. A.; Abolhassani, B.; Sadough, S. M. S. (Společnost pro radioelektronické inženýrství, 2015-09)
    To optimize the usage of limited spectrum resources, cognitive radio (CR) can be used as a viable solution. The main contribution of this article is to propose a new protocol to increase throughput of mobile cooperative ...
  • Split Distributed Computing in Wireless Sensor Networks 

    Kenyeres, M.; Kenyeres, J.; Skorpil, V. (Společnost pro radioelektronické inženýrství, 2015-09)
    We designed a novel method intended to improve the performance of distributed computing in wireless sensor networks. Our proposed method is designed to rapidly increase the speed of distributed computing and decrease the ...