2013/4
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Recent Submissions
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The Design of Polymer Planar Optical Triplexer with MMI Filter and Directional Coupler
(Společnost pro radioelektronické inženýrství, 2013-12)Optical bidirectional WDM transceiver is a key component of the Passive Optical Network of the Fiber to the Home topology. Essential parts of such transceivers are filters that combine multiplexing and demultiplexing ... -
Closed-Form Approximation for Parallel-Plate Waveguide Coefficients
(Společnost pro radioelektronické inženýrství, 2013-12)Simple closed-form formulas for calculating coefficients of modes excited in a parallel-plate waveguide illuminated by a planar wave are presented. The mode-matching technique and Green’s formula are used to arrive at a ... -
Broadband RCS Reduction of Microstrip Patch Antenna Using Bandstop Frequency Selective Surface
(Společnost pro radioelektronické inženýrství, 2013-12)In this article, a simple and effective approach is presented to reduce the Radar Cross Section (RCS) of microstrip patch antenna in ultra broad frequency band. This approach substitutes a metallic ground plane of a ... -
Prague's Emission Fourier Transform Microwave Spectrometer - Design and Preliminary Results
(Společnost pro radioelektronické inženýrství, 2013-12)The design, performance and operation of the high resolution microwave spectrometer are described. The spectrometer is based on the Fabry-Perot resonator supplemented by a pulsed supersonic nozzle for adiabatic cooling of ... -
IR Thermometer with Automatic Emissivity Correction
(Společnost pro radioelektronické inženýrství, 2013-12)The paper describes the design and implementation of an infrared (IR) thermometer with automatic emissivity correction. The temperature measurement is carried out by the simple digital thermopile sensor MLX90614. The ... -
Temperature and Frequency Dependent Empirical Models of Dielectric Properties of Sunflower and Olive Oil
(Společnost pro radioelektronické inženýrství, 2013-12)In this article, a known concept and measurement probe geometry for the estimation of the dielectric properties of oils have been adapted. The new probe enables the~measurement in the frequency range of 1 to 3000 MHz. ... -
Novel Empirical Equations to Calculate the Impedance of a Strip Dipole Antenna
(Společnost pro radioelektronické inženýrství, 2013-12)This paper investigates the input impedance of strip dipoles since they are the basic elements of folded strip dipole antennas. A novel, simple and accurate design algorithm is presented. Compared to state-of-the art design ... -
A Novel Planar Fractal Antenna with CPW-Feed for Multiband applications
(Společnost pro radioelektronické inženýrství, 2013-12)In this paper, a multiband antenna using a novel fractal design is presented. The antenna structure is formed by inscribing a hexagonal slot within a circle. This base structure is then scaled and arranged within the hexagon ... -
Reflected Power Measurement of Antennas between 0 and 4 GHz Using Optical Mixing of Distributed Feedback Lasers
(Společnost pro radioelektronické inženýrství, 2013-12)Reflected power measurement of antennas by using an alternative microwave photonic system is presented in this paper. The proposed experimental setup is based on optical mixing of two distributed feedback (DFB) lasers, ... -
Circuital and Numerical Models for Calculation of Shielding Effectiveness of Enclosure with Apertures and Monitoring Dipole Antenna Inside
(Společnost pro radioelektronické inženýrství, 2013-12)In this paper, circuital and numerical models of metal In this paper, circuital and numerical models of metal enclosure with apertures are considered for the purpose of accurate shielding effectiveness calculation. An ... -
Design and Investigation of Photonic Remote Antenna Units for Bidirectional Transmission in the Last Mile Wireless over Fiber System
(Společnost pro radioelektronické inženýrství, 2013-12)In the article three different photonic Remote Antenna Units (RAU) in the last mile Wireless over Fiber links are presented. For construction of RAU commercially available optoelectronic devices were used. The solutions ... -
Design of a Compact Wideband Antenna Array for Microwave Imaging Applications
(Společnost pro radioelektronické inženýrství, 2013-12)In the paper, wideband antenna arrays aimed at microwave imaging applications and SAR applications operating at Ka band were designed. The antenna array feeding network is realized by a low-loss SIW technology. Moreover, ... -
Software Defined DCF77 Receiver
(Společnost pro radioelektronické inženýrství, 2013-12)This paper shows the solution of time stamp software defined receiver integration into low cost com-mercial devices. The receiver is based on a general pur-pose processor and its analog to digital converter. The amplified ... -
A Tri-band-notched UWB Antenna with Low Mutual Coupling between the Band-notched Structures
(Společnost pro radioelektronické inženýrství, 2013-12)A compact printed U-shape ultra-wideband (UWB) antenna with triple band-notched characteristics is presented. The proposed antenna, with compact size of 24×33 mm2, yields an impedance bandwidth of 2.8-12GHz for VSWR<2, ... -
Design of Compact BPF and Planar Diplexer for UMTS using Embedded-scheme Resonator
(Společnost pro radioelektronické inženýrství, 2013-12)A compact planar diplexer utilizing embedded-scheme resonator (ESR) is designed for universal mobile telecommunications system (UMTS). The ESR is formed by embedding interdigital resonators into an open loop resonator. ... -
An Efficient Method for GPS Multipath Mitigation Using the Teager-Kaiser-Operator-based MEDLL
(Společnost pro radioelektronické inženýrství, 2013-12)An efficient method for GPS multipath mitigation is proposed. The motivation for this proposed method is to integrate the Teager-Kaiser Operator (TKO) with the Multipath Estimating Delay Lock Loop (MEDLL) module to mitigate ... -
Route Selection Problem Based on Hopfield Neural Network
(Společnost pro radioelektronické inženýrství, 2013-12)Transport network is a key factor of economic, social and every other form of development in the region and the state itself. One of the main conditions for transport network development is the construction of new routes. ... -
Independent Component Analysis of Complex Valued Signals Based on First-order Statistics
(Společnost pro radioelektronické inženýrství, 2013-12)This paper proposes a novel method based on first-order statistics, aims to solve the problem of the independent component extraction of complex valued signals in instantaneous linear mixtures. Single-step and iterative ... -
Performance Analysis of Selection Combining Over Correlated Nakagami-m Fading Channels with Constant Correlation Model for Desired Signal and Cochannel Interference
(Společnost pro radioelektronické inženýrství, 2013-12)A very efficient technique that reduces fading and channel interference influence is selection diversity based on the signal to interference ratio (SIR). In this pa¬per, system performances of selection combiner (SC) over ... -
Effect of Location Accuracy and Shadowing on the Probability of Non-Interfering Concurrent Transmissions in Cognitive Ad Hoc Networks
(Společnost pro radioelektronické inženýrství, 2013-12)Cognitive radio ad hoc systems can coexist with a primary network in a scanning-free region, which can be dimensioned by location awareness. This coexistence of networks improves system throughput and increases the efficiency ...
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