Title page
title.pdf
Contents
contents.pdf
Beamforming Features of the Grounded Dielectric
Substrate Based X-Band Monopole Antenna
I.V. Ivanchenko, Senior Member, IEEE, N.A. Popenko, Senior Member, IEEE,
M.M. Khruslov, Student Member, IEEE, R.E. Chernobrovkin, Student Member, IEEE
pp. 4-11
ri_2008_4_1.pdf
Computational modelling of the cylindrical monopole antenna with the grounded dielectric layer is carried out. Notice that the near-field distributions in the inductive region of the given class of antennas are similar to the spatial periodical lattice with different number of variations along the ground radius and with the amplitude decrease to the antenna edge. The calculated antenna characteristics are validated by measurements on the antenna prototypes. The basic regularities of the radiation pattern formation are analyzed.
Mobile X-band Direction Finder
I. Ivanchenko, Senior Member, IEEE, D. Ivanchenko, A. Korolev,
N. Popenko, Senior Member, IEEE, and S. Rądionov
pp. 11-16
ri_2008_1_2.pdf
A compact X-band direction finder is presented in this paper. Algorithm of the system operation using the null-amplitude technique is described in detail. Based on the results of model experiments the resolving capacity of the direction finder prototype are determined.
Some Hypotheses in the Theory of the Azimuthally
Magnetized Circular Ferrite Waveguides
Georgi Nikolov Georgiev and Mariana Nikolova Georgieva-Grosse
pp. 16-25
ri_2008_1_3.pdf
Hypotheses for the eigenvalue spectrum, phase characteristics and differential phase shift of the circular waveguides that comprise azimuthally magnetized ferrite are advanced, generalizing results from the theory of these transmission lines, worked out in terms of the confluent hypergeometric functions. Some corollaries of the proposed statements are considered. Numerical substantiation of the assumptions is made for two configurations, using iterative methods. Computational problems which arise in the analysis are discussed.
Multi-version Digital Systems Evolved with Genetic
Algorithms: Designing and Estimating Fault Tolerance
Vyacheslav Kharchenko, Nataliya Yakymets
pp. 25-31
ri_2008_1_4.pdf
The paper discusses the main challenges in multi- version system design. Most of the current techniques for design diversity rely on a system life cycle within a single design concept, so it is not possible to make a system robust to the defects that are common to each version since widely used Computer Aided Design (CAD) tools usually have only standard algorithms and conventional logic implemented. In this work, we give a solution to the problem of achieving the least correlation level within the multi-version projects by using different approaches to system design. Focusing on the non-classical design based on the genetic algorithms (GAs), we represent the metrics to assess a diversity level in multi- version digital systems and suggest several methods to estimate the reliability of such systems. We prove those by an example of heating controller for AN-70 plane as well.
Optimal Memory Tests Coding
for Programmable BIST Architecture
Alexander A. Ivaniuk
pp. 32-37
ri_2008_1_5.pdf
Programmable memory BIST architecture is becoming a necessity for embedded memory cores. Classical memory BIST architectures use fixed algorithmic tests during the whole live of digital device. To improve the flexibility of memory BIST the programmable solution, based on finite state machine with microcode control, was invented. The requirement to use such flexibility is dictated by reason to use newest test for memory cores. In this paper a new Programmable Memory BIST architecture with small microcode memory is proposed. The analysis of existing March tests allows to code them into the optimal binary format, which cause not only small hardware overhead but also may speed-up the transferring of new test over the serial interfaces like IEEE 1149.1 and P1500.
About One Class of Vector Random Processes
With Infinite Rank of Nonstationarity
Artem A. Yantsevitch, Member, IEEE, Anzhela Y. Petrova, Member, IEEE
pp. 38-43
ri_2008_1_6.pdf
One class of nonstationary vector random processes is investigated in the article. On the basis of triangle models of quasiunitary operators the structure of corresponding correlation matrix was investigated, representations for special matrix were got, by which the correlation matrix is retrieved after solving the Darboux- Goursat problem.
State Machines Synthesis and Implementation
into FPGAs with Multiple Encoding of States
Arkadiusz Bukowiec, Alexander Barkalov, and Larysa Titarenko
pp. 43-49
ri_2008_1_7.pdf
The method of synthesis and implementation into FPGAs (Field Programmable Gate Arrays) of Mealy FSMs (Finite State Machines) is proposed. Synthesis is based on the architectural decomposition and the multiple encoding. A set of states is divided into subsets based on a current state or a executed microinstruction. Then, states are encoded separately in each subset. The state is decoded in the second-level circuit based on the multiple code and the code of a current state or the code of a executed microinstruction. It leads to implementation of an FSM in double-level structure where utilization of both, LUTs (Look-Up Tables) and embedded memory blocks, is applied. It leads to balanced usage of hardware resources of an FPGA device.
Spectral Analysis in Problems of
Electromagnetic Sources Detection and
Multilayer Structures Identification
Andriy Synyavskyy, Volodymyr Antonyuk, Mykhajlo Lobur,Yevgenij Klepfer
pp. 49-57
ri_2008_1_8.pdf
The principles of spectral estimation are investigated in this paper to develop a common approach to the solution of both localization problem of spatially- distributed electromagnetic sources and identification problem of multilayer structures. The process of experimental data registration in a linear antenna array and multi-frequency means of multilayer structure non-destructive evaluation is described by proposed identical models. The order and parameters of the models are determined by mean of stochastic approach to the spectral estimation, which allows to obtain higher spectral resolution and accuracy in case of low signal to noise ratio.
Preparation of Papers for IEEE TRANSACTIONS
and JOURNALS (May 2007)
First A. Author, Second B. Author, Jr., and Third C. Author, Member, IEEE
pp. 57-63
ri_2008_1_9.pdf
These instructions give you guidelines for preparing papers for IEEE TRANSACTIONS and JOURNALS. Use this document as a template if you are using Microsoft Word 6.0 or later. Otherwise, use this document as an instruction set. The electronic file of your paper will be formatted further at IEEE. Define all symbols used in the abstract. Do not cite references in the abstract. Do not delete the blank line immediately above the abstract; it sets the footnote at the bottom of this column.