Now showing items 1-20 of 52

  • A Box-Counting Method with Adaptable Box Height for Measuring the Fractal Feature of Images 

    Long, Min; Peng, Fei (Společnost pro radioelektronické inženýrství, 2013-04)
    Most of the existing box-counting methods for measuring fractal features are only applicable to square images or images with each dimension equal to the power of 2 and require that the box at the top of the box stack of ...
  • A Novel Three-Point Modulation Technique for Fractional-N Frequency Synthesizer Applications 

    Peng, Kang-Chun; Lin, Chiu-Chin; Chao, Ching-Hui (Společnost pro radioelektronické inženýrství, 2013-04)
    This paper presents a novel three-point modulation technique for fractional-N frequency synthesizer applications. Convention modulated fractional-N frequency synthesizers suffer from quantization noise, which degrades not ...
  • A Dual-Band Circularly-Polarized Patch Antenna with a Novel Asymmetric Slot for WiMAX Application 

    Noghabaei, S. M.; Rahim, S. K. A.; Soh, P. J.; Abedian, M.; Vandenbosch, G. A. E. (Společnost pro radioelektronické inženýrství, 2013-04)
    A compact design of a circularly-polarized (CP) microstrip antenna to achieve dual-band behavior for WiMAX applications is presented. A single-layered feed is used to excite a single square patch integrated with a novel ...
  • High Current Matching over Full-Swing and Low-Glitch Charge Pump Circuit for PLLs 

    Wang, De-zhi; Zhang, Ke-feng; Zou, Xue-cheng (Společnost pro radioelektronické inženýrství, 2013-04)
    A high current matching over full-swing and low-glitch charge pump (CP) circuit is proposed. The current of the CP is split into two identical branches having one-half the original current. The two branches are connected ...
  • Interest Points as a Focus Measure in Multi-Spectral Imaging 

    Zukal, Martin; Mekyska, Jiri; Cika, Petr; Smekal, Zdenek (Společnost pro radioelektronické inženýrství, 2013-04)
    A novel multi-spectral focus measure that is based on algorithms for interest point detection, particularly on the FAST (Features from Accelerated Segment Test), Fast Hessian and Harris-Laplace detector, is described in ...
  • A Hybrid 3D Learning-and-Interaction-based Segmentation Approach Applied on CT Liver Volumes 

    Danciu, Marius; Gordan, Mihaela; Florea, Camelia; Orghidan, Radu; Sorantin, Erich; Vlaicu, Aurel (Společnost pro radioelektronické inženýrství, 2013-04)
    Medical volume segmentation in various imaging modalities using real 3D approaches (in contrast to slice-by-slice segmentation) represents an actual trend. The increase in the acquisition resolution leads to large amount ...
  • Design and Modeling of Symmetric Three Branch Polymer Planar Optical Power Dividers 

    Prajzler, Vaclav; Tuma, Hynek; Spirkova, Jarmila; Jerabek, Vitezslav (Společnost pro radioelektronické inženýrství, 2013-04)
    Two types of polymer-based three-branch symmetric planar optical power dividers (splitters) were designed, multimode interference (MMI) splitter and triangular shape-spacing splitter. By means of modeling the real structures ...
  • 3D Energy Harvester Evaluation 

    Janicek, Vladimir; Husak, Miroslav (Společnost pro radioelektronické inženýrství, 2013-04)
    This paper discusses the characterization and evaluation of an MEMS based electrostatic generator, a part of the power supply unit of the self-powered microsystem[1,2,3]. The designed generator is based on electrostatic ...
  • Classification of Jaw Bone Cysts and Necrosis via the Processing of Orthopantomograms 

    Mikulka, Jan; Gescheidtova, Eva; Kabrda, Miroslav; Perina, Vojtech (Společnost pro radioelektronické inženýrství, 2013-04)
    The authors analyze the design of a method for automatized evaluation of parameters in orthopantomographic images capturing pathological tissues developed in human jaw bones. The main problem affecting the applied medical ...
  • Comparison of the Intrinsic Characteristics of LTCC and Silicon Pressure Sensors by Means of 1/f Noise Measurements 

    Zarnik, Marina Santo; Belavic, Darko; Sedlakova, Vlasta; Sikula, Josef; Kopecky, Martin; Sedlak, Petr; Majzner, Jiri (Společnost pro radioelektronické inženýrství, 2013-04)
    A pressure sensor with high resolution is of key importance for precise measurements in the low-pressure range. The intrinsic resolution of piezoresistive ceramic pressure sensors (CPSs) mainly depends on their func¬tional ...
  • A Novel Second-Order All-Pass Filter Using Square-Root Domain Blocks 

    Surav Yilmaz, Saziye; Tola, Abdullah T.; Arslanalp, Remzi (Společnost pro radioelektronické inženýrství, 2013-04)
    In this study, a new second order all-pass filter is synthesized in the square-root domain by using the state-space method. The proposed second order all-pass filter is constituted by current mirrors, current sources, ...
  • 0.5V 3rd-order Tunable gm-C Filter 

    Arya, Richa; Souliotis, George; Vlassis, Spyros; Psychalinos, Costas (Společnost pro radioelektronické inženýrství, 2013-04)
    This paper proposes a 3rd-order gm-C filter that operates with the extremely low voltage supply of 0.5V. The employed transconductor is capable for operating in an extremely low voltage power supply environment. A benefit ...
  • A Compact and Wideband Coupled-Line Coupler with High Coupling Level Using Shunt Periodic Stubs 

    Keshavarz, Rasool; Movahhedi, Masoud (Společnost pro radioelektronické inženýrství, 2013-04)
    A wideband microstrip forward-wave coupled-line coupler with high coupling value is presented. Compared with the conventional edge-coupled microstrip forward-wave coupler, this symmetrical structure, consisting periodic ...
  • A New Low Complexity Uniform Filter Bank Based on the Improved Coefficient Decimation Method 

    Ambede, Abhishek; Smitha, Kavallur Gopi; Vinod, Achutavarrier Prasad (Společnost pro radioelektronické inženýrství, 2013-04)
    In this paper, we propose a new uniform filter bank (FB) based on the improved coefficient decimation method (ICDM). In the proposed FB’s design, the ICDM is used to obtain different multi-band frequency responses using a ...
  • Trap-Assisted Tunneling in the Schottky Barrier 

    Racko, Juraj; Pechacek, Juraj; Mikolasek, Miroslav; Benko, Peter; Grmanova, Alena; Harmatha, Ladislav; Breza, Juraj (Společnost pro radioelektronické inženýrství, 2013-04)
    The paper presents a new way how to calculate the currents in a Schottky barrier. The novel phenomeno-logical model extends the Shockley-Read-Hall recombi-nation-generation theory of trap-assisted tunneling. The proposed ...
  • 3D Reconstruction: Novel Method for Finding of Corresponding Points using Pseudo Colors 

    Bolecek, Libor; Ricny, Vaclav; Slanina, Martin (Společnost pro radioelektronické inženýrství, 2013-04)
    This paper deals with the reconstruction of spatial coordinates of an arbitrary point in a scene using two images scanned by a 3D camera or two displaced cameras. Calculations are based on the perspective geom-etry. Accurate ...
  • Operational Trans-Resistance Amplifier Based Tunable Wave Active Filter 

    Bothra, Mayank; Pandey, Rajeshwari; Pandey, Neeta; Paul, Sajal K. (Společnost pro radioelektronické inženýrství, 2013-04)
    In this paper, Operational Trans-Resistance Amplifier (OTRA) based wave active filter structures are presented. They are flexible and modular, making them suitable to implement higher order filters. The circuits implement ...
  • Multiobjective Optimization for Electronic Circuit Design in Time and Frequency Domains 

    Dobes, Josef; Michal, Jan; Biolkova, Viera (Společnost pro radioelektronické inženýrství, 2013-04)
    The multiobjective optimization provides an extraordinary opportunity for the finest design of electronic circuits because it allows to mathematically balance contradictory requirements together with possible constraints. ...
  • Low-Voltage MOS Current Mode Logic Multiplexer 

    Gupta, Kirti; Pandey, Neeta; Gupta, Maneesha (Společnost pro radioelektronické inženýrství, 2013-04)
    In this paper, a new low-voltage MOS current mode logic (MCML) multiplexer based on the triple-tail cell concept is proposed. An analytical model for static parameters is formulated and is applied to develop a design ...
  • Thick-Film and LTCC Passive Components for High-Temperature Electronics 

    Dziedzic, Andrzej; Nowak, Damian (Společnost pro radioelektronické inženýrství, 2013-04)
    At this very moment an increasing interest in the field of high-temperature electronics is observed. This is a result of development in the area of wide-band semiconductors’ engineering but this also generates needs for ...