Research and modeling of Ku-band parabolic antenna
A portable wireless device for recharging batteries of vehicles, phones, and another apparatus is offered and described in this paper. Application of novel antennas, formed by sections of coupled radial spirals with dimensions significantly less than the operating wavelength in free space, makes it possible effective transmission RF energy from one object to another without radiation into surrounding medium.
AMT 2013 is the most comprehensive conference focused on the various aspects of advances in Advanced Measurement and Test. The conference provides a chance for academic and industry professionals to discuss recent progress in the area of Advanced Measurement and Test. The goal of AMT2013 is to bring together the researchers from academia and industry as well as practitioners to share ideas, problems and solutions relating to the multifaceted aspects of Advanced Measurement and Test.
In article relevance of application of computer modeling on the example of subsystems of ASONIKA-T, ASONIKA-M-3D and ASONIKA-TM of the ASONIKA software product for the analysis of standard and nonstandard designs of radio-electronic funds for influence of thermal and mechanical factors is considered. Possibilities of these subsystems are described. The technique of preparation of model to calculation on mechanical influences in ASONIKA-M-3D subsystem is presented. Modeling examples are given.
The monograph presents results by professor Dr. A. Shalumov’s Research School of Modeling, Information Technology and Automated Systems (Russia). The program, ASONIKA, developed by the school is reviewed here regarding reliability and quality of devices for simulation of electronics and chips during harmonic and random vibration, single and multiple impacts, linear acceleration and acoustic noise, and steady-state and transient thermal effects. Calculations are done for thermal stress during changes in temperature and power in time. Calculations are done for number of cycles to fatigue failure under mechanical loads as well as under cyclic thermal effects. Simulation results for reliability analysis are taken into account. Models, software interface, and simulation examples are presented.
For engineers and scientists involved in design automation of electronics.
IX International students’conference: INNOVATIONS IN SCIENCE AND TECHNOLOGY Allowed languages: English, German, French, Spanish. List of the sections possible: 1. Engineering Innovations 2. Modern Information Technologies 3. Electronics 4. Natural Sciences 5. Social Sciences
The project of laboratory practical works for studying of different electronic devices based on microcircuits of operational amplifiers was developed.
A portable wireless device for recharging batteries of vehicles is described in this paper. Application of novel, based on coupled radial spirals antennas with dimensions significantly less than the operating wavelength in free space, makes it possible effective pumping of RF energy without radiation into surrounding medium.
Based on the above-described method of the electronic structures synthesis, an automated subsystem ASONIKA-V has been developed. This subsystem is designed to analyze the mechanical characteristics and synthesis of cabinets structures, racks and blocks electronics, mounted on vibration isolators, under the influence of harmonic vibration, random vibration, shock loads, linear acceleration, under the influence of acoustic noise, as well as complex mechanical influences and decision-making on the basis of the mechanical characteristics in order to ensure structures stability of electronic to mechanical stress.
The influence oа the eccentricity and the position of the load on the radar mast is studied. The mast is a statically determinate truss, consisting of three identical plane trusses connected to the regular truncated pyramid. Vertical truss is divided into n zones of equal height. The load is reduced to the nodes of the upper boom of the mast. The analytical solution for the forces in the spatial truss rods for an arbitrary number of horizontal contours, and the expression for the deflection under the assumption that the angles of deviation from the vertical of struts are small, are given. The resulting approximate and exact analytical solutions for the deflection under the action of horizontal load allow optimization of the construction. One of the possibilities for optimization is the redistribution of the material between the elements of the construction. An analytical solution of this problem is found. The inductive method with the support of a computer algebra system Maple is used.
Generalized error-locating codes are discussed. An algorithm for calculation of the upper bound of the probability of erroneous decoding for known code parameters and the input error probability is given. Based on this algorithm, an algorithm for selection of the code parameters for a specified design and input and output error probabilities is constructed. The lower bound of the probability of erroneous decoding is given. Examples of the dependence of the probability of erroneous decoding on the input error probability are given and the behavior of the obtained curves is explained.
The dynamics of a two-component Davydov-Scott (DS) soliton with a small mismatch of the initial location or velocity of the high-frequency (HF) component was investigated within the framework of the Zakharov-type system of two coupled equations for the HF and low-frequency (LF) fields. In this system, the HF field is described by the linear Schrödinger equation with the potential generated by the LF component varying in time and space. The LF component in this system is described by the Korteweg-de Vries equation with a term of quadratic influence of the HF field on the LF field. The frequency of the DS soliton`s component oscillation was found analytically using the balance equation. The perturbed DS soliton was shown to be stable. The analytical results were confirmed by numerical simulations.
Radiation conditions are described for various space regions, radiation-induced effects in spacecraft materials and equipment components are considered and information on theoretical, computational, and experimental methods for studying radiation effects are presented. The peculiarities of radiation effects on nanostructures and some problems related to modeling and radiation testing of such structures are considered.