2009/2
Browse
Recent Submissions
Now showing 1 - 5 of 22
- ItemCurrent and Future Research Trends in Substrate Integrated Waveguide Technology(Společnost pro radioelektronické inženýrství, 2009-06) Bozzi, Maurizio; Perregrini, Luca; Wu, Ke; Arcioni, PaoloSubstrate Integrated Waveguide (SIW) technology is the most promising candidate for the implementation of millimeter-wave (mm-wave) integrated circuits and systems for the next decade. Based on planar dielectric substrates with top and bottom metal layers perforated with metalized holes, SIW structures offer a compact, low loss, flexible, and cost-effective solution for integrating active circuits, passive components and radiating elements on the same substrate. This paper presents an overview of the current status and future trends of academic and industrial research on SIW technology. The historical development of SIW components and circuits is briefly outlined, and the current research topics are discussed: they include the development of numerical techniques for the modeling and design of SIW components, the investigation of novel compact and broadband interconnects, the determination of design solutions for loss minimization. Future research trends are also discussed: they mainly aim at the implementation of SIW components at higher frequency (60-350 GHz) and the integration of complete Systems-on-Substrate (SoS).
- ItemUsing Digital Filtration for Hurst Parameter Estimation(Společnost pro radioelektronické inženýrství, 2009-06) Prochaska, Jan; Vargic, RadoslavWe present a new method to estimate the Hurst parameter. The method exploits the form of the autocorrelation function for second-order self-similar processes and is based on one-pass digital filtration. We compare the performance and properties of the new method with that of the most common methods.
- ItemWireless Sensor Networks: VAN-Project Perspectives(Společnost pro radioelektronické inženýrství, 2009-06) Lakkundi, Vishwas; Kraetzig, MarkoThe emergence of wireless sensor networks and their potential for a multitude of novel applications, especially in the industrial automation domain, are noteworthy. This paper presents research and development perspectives on wireless sensor networks from the Virtual Automation Networks project in terms of prototype development and coexistence with other chosen wireless technologies. The project-specific design and specification aspects, implementation and integration issues, and coexistence tests, measurements and results are covered in detail. The paper illustrates the successful integration of wireless sensor networks into the overall prototype and shows that they can coexist with other wireless technologies.
- ItemSPICE Model of Memristor with Nonlinear Dopant Drift(Společnost pro radioelektronické inženýrství, 2009-06) Biolek, Zdenek; Biolek, Dalibor; Biolkova, VieraA mathematical model of the prototype of memristor, manufactured in 2008 in Hewlett-Packard Labs, is described in the paper. It is shown that the hitherto published approaches to the modeling of boundary conditions need not conform with the requirements for the behavior of a practical circuit element. The described SPICE model of the memristor is thus constructed as an open model, enabling additional modifications of non-linear boundary conditions. Its functionality is illustrated on computer simulations.
- ItemUWB System Performance Improvement Using Smart Interference Rejection Filter(Společnost pro radioelektronické inženýrství, 2009-06) Dimitrijevic, Bojan; Milosevic, Nenad; Nikolic, Zorica; Petrovic, PredragIn this paper we proposed a smart interference rejection filter in TH-PPM UWB system, which improves the system\'s error probability for an order of magnitude in case of high power OFDM interference. The smart filter is based on an adaptive transversal filter. Based on the fulfillment of certain conditions, the filter activates or deactivates some parts of it.