2010/1
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Recent Submissions
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New Grounded and Floating Simulated Inductance Circuits using Current Differencing Transconductance Amplifiers
(Společnost pro radioelektronické inženýrství, 2010-04)Current differencing transconductance amplifier (CDTA) is receiving considerable attention as a building block for current-mode (CM) analog signal processing / signal generation. In this paper, new CDTA based lossless ... -
Systematic Design of Fully Balanced Differential Current-Mode Multiple-Loop Feedback Filters Using CFBCCII
(Společnost pro radioelektronické inženýrství, 2010-04)In this paper, a systematic design method producing balanced current-mode filters is proposed, using current controlled fully balanced second-generation current conveyor circuit (CFBCCII). In this method, many kind of ... -
FMCW Radar Performance for Atmospheric Measurements
(Společnost pro radioelektronické inženýrství, 2010-04)Frequency-modulated continuous-wave radars (FMCW) have been used in the investigation of the atmosphere since the late 1960’s. FMCW radars provide tremendous sensitivity and spatial resolution compared to their pulsed ... -
Multicriteria Optimization of Antennas in Time-Domain
(Společnost pro radioelektronické inženýrství, 2010-04)An original approach to the time-domain multicriteria optimization of antennas is presented. For a given excitation pulse, the time-domain objective function takes the “time-domain impedance matching”, distortion of responses ... -
Optical Fiber Distributed Sensing System Applied in Cement Concrete Commixture Research
(Společnost pro radioelektronické inženýrství, 2010-04)DTS are unique optical-fiber distributed systems for measuring of temperature or mechanical tension. These systems use non-linear properties of optical fibers. Optical fiber can therefore be used not only for telecommunication ... -
Feedback Compensation Algorithm for BPSK/QPSK Carrier Synchronization
(Společnost pro radioelektronické inženýrství, 2010-04)This paper deals with carrier synchronization problem in coherent communication system, such as BPSK and QPSK. First, this paper surveys and analyzes currently existing carrier synchronization algorithms and relevant ... -
Modeling of the Phase Noise in Space Communication Systems
(Společnost pro radioelektronické inženýrství, 2010-04)Our work is focused on the investigation of an influence of an additive thermal noise and a multiplicative phase noise in space communication chains. The most important properties of both noise types are summarized. The ... -
Minimum Configuration Insensitive Multifunctional Current-Mode Biquad Using Current Conveyors and All-Grounded Passive Components
(Společnost pro radioelektronické inženýrství, 2010-04)This paper proposes a new current conveyorbased high-output impedance single-input three-output current mode filter with minimum configuration. It contains two dual output second generation current conveyors, one third ... -
Calculation and Comparison of Turbulence Attenuation by Different Methods
(Společnost pro radioelektronické inženýrství, 2010-04)This paper is focused on the effect of turbulence in atmospheric transmission media. A short introduction of the origin of turbulent atmosphere is given. Two classical methods for the calculation of turbulence attenuation ... -
Simulation and Evaluation of CTP and Secure-CTP Protocols
(Společnost pro radioelektronické inženýrství, 2010-04)The paper discusses characteristics and qualities of two routing protocols – Collection Tree Protocol and its secure modification. The original protocol, as well as other protocols for wireless sensors, solves only problems ... -
Electromagnetic Cylindrical Transparent Devices with Irregular Cross Section
(Společnost pro radioelektronické inženýrství, 2010-04)Electromagnetic transparent device is very important for antenna protection. In this paper, the material parameters for the cylindrical transparent devices with arbitrary cross section are developed based on the coordinate ... -
New Channel Coding Methods for Satellite Communication
(Společnost pro radioelektronické inženýrství, 2010-04)This paper deals with the new progressive channel coding methods for short message transmission via satellite transponder using predetermined length of frame. The key benefits of this contribution are modification and ... -
Analysis for Design and Transformation of Autosynchronous State Machines
(Společnost pro radioelektronické inženýrství, 2010-04)The paper deals with design and transformation methodology of autosynchronous state machines. The result is the design methodology for autosynchronous state machines with one-hot and Gray encodings. On the basis of their ... -
Circularly Polarized Aperture Coupled Microstrip Antenna with Resonant Slots and a Screen
(Společnost pro radioelektronické inženýrství, 2010-04)A broadband circularly polarized (CP) Aperture Coupled Microstrip Antenna (ACMSA) is described herein. In order to decrease the back radiation of the antenna due to resonant coupling slots (a cross-slot) in the ground ... -
Global Evolutionary Algorithms in the Design of Electromagnetic Band Gap Structures with Suppressed Surface Waves Propagation
(Společnost pro radioelektronické inženýrství, 2010-04)The paper is focused on the automated design and optimization of electromagnetic band gap structures suppressing the propagation of surface waves. For the optimization, we use different global evolutionary algorithms like ... -
Electrical Analogy to an Atomic Force Microscope
(Společnost pro radioelektronické inženýrství, 2010-04)Several applications of the atomic force microscopy (AFM), such as measurement of soft samples, manipulation with molecules, etc., require mechanical analysis of the AFM probe behavior. In this article we suggest the ... -
A Terrestrial Multiple-Receiver Radio Link Experiment at 10.7 GHz - Comparisons of Results with Parabolic Equation Calculations
(Společnost pro radioelektronické inženýrství, 2010-04)This work presents the results of a terrestrial multiple-receiver radio link experiment at 10.7 GHz. Results are shown in the form of the power levels recorded at several antennas attached to a receiving mast. Comparisons ... -
Comparison of Fuzzy Logic and Genetic Algorithm Based Admission Control Strategies for UMTS System
(Společnost pro radioelektronické inženýrství, 2010-04)CDMA systems have so-called soft capacity, so the total number of possible sessions has not an exact value. The capacity of CDMA system depends on the interference level in the system. There are therefore RRM (Radio Resources ... -
Blind Oversampling Data Recovery with Low Hardware Complexity
(Společnost pro radioelektronické inženýrství, 2010-04)The paper is focused on the optimization and implementation of fully digital feed-forward blind oversampling CDR (BO-CDR). Two new phase-decision algorithms are proposed. Their complexity is very low, enabling a very simple ... -
Modeling of Human Head Surface by Using Triangular B-Splines
(Společnost pro radioelektronické inženýrství, 2010-04)The paper deals with modeling of human head surface on the basis of quadratic triangular B-splines for the standard videocodec MPEG-4 SNHC. First, we define a triangular B-spline surface of any degree and then we present ...
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