2009/2
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Recent Submissions
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Compensation of Wall Effect for Through Wall Tracking of Moving Targets
(Společnost pro radioelektronické inženýrství, 2009-06)Through wall tracking of moving targets is of interest for rescue, surveillance and security operations. A useful method applies an ultra-wideband radar approach for this purpose since electromagnetic waves in the lower ... -
SPICE Model of Memristor with Nonlinear Dopant Drift
(Společnost pro radioelektronické inženýrství, 2009-06)A 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 ... -
A Simple Signal Shaper for GMSK/GFSK and MSK Modulator Based on Sigma-Delta Look-up Table
(Společnost pro radioelektronické inženýrství, 2009-06)Due to wide power spectrums of rectangular data streams, it is important for base-band signals to be heavily band limited before modulation. That can be achieved by pulse shaping of rectangular bits. Some of the most common ... -
Synthetic Aperture Radar - Hardware Development
(Společnost pro radioelektronické inženýrství, 2009-06)Experimental real and synthetic aperture radar are developed from the base-band digital unit to the analogue RF parts, based on solid state units, using pulse compression for radar imaging. Proper QPSK code is found for ... -
Wireless Sensor Networks: VAN-Project Perspectives
(Společnost pro radioelektronické inženýrství, 2009-06)The 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 ... -
Influence of EBG Structures on the Far-Field Pattern of Patch Antennas
(Společnost pro radioelektronické inženýrství, 2009-06)In this paper, the influence of the EBG structures on the far-field pattern of patch antennas is investigated. As a reference model, a conventional rectangular patch antenna on a high-permittivity substrate is used. The ... -
Using Digital Filtration for Hurst Parameter Estimation
(Společnost pro radioelektronické inženýrství, 2009-06)We 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 ... -
Distribution of Video-on-Demand Service over Cable Television Networks
(Společnost pro radioelektronické inženýrství, 2009-06)The paper deals with investigations carried out to increase the effectiveness of video-on-demand (VoD) systems when cable television networks are used. A comparative analysis of the existing VoD architectures is made with ... -
UWB System Performance Improvement Using Smart Interference Rejection Filter
(Společnost pro radioelektronické inženýrství, 2009-06)In 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 ... -
Current and Future Research Trends in Substrate Integrated Waveguide Technology
(Společnost pro radioelektronické inženýrství, 2009-06)Substrate 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 ... -
An Efficient CS-CPWL Based Predistorter
(Společnost pro radioelektronické inženýrství, 2009-06)We study the performance of Hammerstein predistorters (PD) to model and compensate nonlinear effects produced by a high power amplifier with memory. A novel Hammerstein model is introduced that includes, as the basic static ... -
Comparative Analysis of Guided Modal Properties of Double-Positive and Double-Negative Metamaterial Slab Waveguides
(Společnost pro radioelektronické inženýrství, 2009-06)The guided modal properties of double-positive and double-negative metamaterial slab waveguides are numerically analyzed and compared when varying the dielectric and magnetic constants. As the cutoff frequencies of both ... -
Miniaturization of Planar Microwave Devices by Means of Complementary Spiral Resonators (CSRs): Design of Quadrature Phase Shifters
(Společnost pro radioelektronické inženýrství, 2009-06)In this work, two compact quadrature phase shifters based on metamaterial transmission lines implemented by means of complementary spiral resonators (CSRs) have been designed, fabricated and measured. The structures consist ... -
Superconductor Microwave Kinetic Inductance Detectors: System Model of the Readout Electronics
(Společnost pro radioelektronické inženýrství, 2009-06)This paper deals with the readout electronics needed by superconductor Microwave Kinetic Inductance Detectors (MKIDs). MKIDs are typically implemented in the form of cryogenic-cooled high quality factor microwave resonator. ... -
Multifrequency Printed Antennas Loaded with Metamaterial Particles
(Společnost pro radioelektronické inženýrství, 2009-06)This paper provides a review of printed antennas loaded with metamaterial particles. This novel technique allows developing printed antennas with interesting features such as multifrequency (simultaneous operation over two ... -
Modeling of Modified Split-Ring Type Defected Ground Structure and Its Application as Bandstop Filter
(Společnost pro radioelektronické inženýrství, 2009-06)The shape of a popular split-ring defected ground structure (DGS) is modified by selecting different width of the sides with respect to microstrip line. The frequency characteristics of proposed DGS unit show an attenuation ... -
Analog Signal Processing in Transmission Line Metamaterial Structures
(Společnost pro radioelektronické inženýrství, 2009-06)Several novel dispersion-engineered CRLH TL metamaterial analog signal processing systems, exploiting the broadband dispersive characteristics and design flexibility of CRLH TLs, are presented. These systems are either ... -
Directive Emission Obtained by Mu and Epsilon-Near-Zero Metamaterials
(Společnost pro radioelektronické inženýrství, 2009-06)In this work, we use Mu and Epsilon-Near-Zero (MENZ) metamaterials to realize the substrates that can modify the emission of an embedded line source. Simulation results show that the cylindrical waves emitted from the line ... -
3D Metamaterial Based on a Regular Array of Resonant Dielectric Inclusions
(Společnost pro radioelektronické inženýrství, 2009-06)The 3D regular lattice of bi-spherical dielectric resonant inclusions arranged in a cubic lattice as two sets of spheres made from the same dielectric material having different radii and embedded in a host dielectric ... -
Some Advances in the Circuit Modeling of Extraordinary Optical Transmission
(Společnost pro radioelektronické inženýrství, 2009-06)The phenomenon of extraordinary optical transmission (EOT) through electrically small holes perforated on opaque metal screens has been a hot topic in the optics community for more than one decade. This experimentally ...
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