Begell House Inc.
Telecommunications and Radio Engineering
TRE
0040-2508
71
14
2012
RESONANCE SYSTEM FOR ANALYZING CYLINDRICAL SAMPLES IN MILLIMETER WAVE BAND
1247-1257
10.1615/TelecomRadEng.v71.i14.10
A. Yu.
Popkov
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine, 12, Academician Proskura St., Kharkiv 61085, Ukraine
I. K.
Kuzmichev
O.Ya. Usikov Institute for Radio Physics and Electronics, National Academy of Sciences of Ukraine, 12 Academician Proskura St., Kharkiv 61085, Ukraine
cavity
open resonator
permittivity
The paper is devoted to a theoretical analysis of a resonance system of cylindrical, conical and spherical geometry. A cylindrical sample is placed inside all along this cavity. The resonator spectrum has been analyzed, and the relations between the eigen oscillation frequencies and permittivity of samples of various diameter have been determined. The expeimental research validated the applicability of a hemispherical open resonator, containing a segment of a circular super-dimensional waveguide appropriate to the considered cavity, for the purpose of measuring electrophysical parameters of oblong samples.
ECCENTRIC CYLINDRICAL DIODE WITH SPACE-CHARGE LIMITED CURRENT
1259-1270
10.1615/TelecomRadEng.v71.i14.20
G. A.
Alexeev
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine
L. V.
Stulova
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine, 12, Academician Proskura St., Kharkov 61085, Ukraine
eccentric cylindrical diode
angular dependence of anode eccentric cylindrical diode
angular dependence of anode current density
The paper theoretically analyzes the relation between the asymmetric arrangement of the emitter in a cylindrical diode and the angular dependence of the anode current.
PARAMETERS OF SECONDARY ELECTRON PROCESSES IN HOMOGENEOUS HF-SHF ELECTRIC FIELDS OF RESONANCE STRUCTURES
1271-1282
10.1615/TelecomRadEng.v71.i14.30
L. D.
Lobzov
National Scientific Center "Kharkiv Physical and Technological Institute", 1, Academicheskaya St., Kharkiv, 61108
diode gap
alternating voltages and electrical fields
secondary-electron processes
It is shown that the energy of electrons emitted from the surfaces of electrodes of the diode gap of the unit resonance cell, are spotted not only amplitude and a phase of the voltage enclosed at this moment, but also the dynamic quality factor of cell Q. At Q >> 1. In an initial part of a half-period when the instantaneous values of the voltage amplitudes are small, terminating energies of the accelerated primary electrons incidented on an electrode, are small as well. Thus its secondary electron emission properties caused by specified quantities of energies are characterized by the coefficient of secondary electron emission δ as maximal (δ > 1). In the subsequent part of a half-period of a voltage, the instantaneous values of its amplitudes and, accordingly, energies of the accelerated primary electrons, are more than the initial ones. And its secondary electron emission properties are characterized by the coefficient δ, like usual ones with δ < 1. The drop in the quality factor to Q ∼ 10...1 leads to essential narrowing in an interval of phases and a range of small energies of primary electrons in the initial part of a half-period of time. Thus the energies transmitted inner electrons of the opposite electrode during the half-period of time, characterize its secondary electron emission properties as common ones with δ < 1.
INTERFERENCE RESISTANCE OF A CHANNEL OF INFORMATION TRANSMISSION BETWEEN DATABASES IN A CHANNEL WITH CONCENTRATED INTERFERENCES
1283-1291
10.1615/TelecomRadEng.v71.i14.40
V. A.
Minakov
Federal State Research Testing Institute of Problems of Technical Protection of Information, Federal Service on Technical and Export Control, Voronezh, Russian Federation
V. I.
Tupota
State Scientific-Research Testing Institute of Problems of Technical Protection of Information, Federal Service on Technical and Export Control, Voronezh, Russian Federation
discrete information transmission
feedback systems
interference resistance of transmitted information
channel with concentrated interferences
A method for transmission of discrete information in feedback systems, ensuring interference resistance of transmitted information due to introduction of redundancy to the transmitted message, as well as protection of information transmitted via a channel with concentrated interferences, is described.
MECHANISM OF ANTISPAM POLICY DEVELOPMENT AND IMPLEMENTATION
1293-1301
10.1615/TelecomRadEng.v71.i14.50
Rasim Magamed ogly
Alguliev
Institute of Information Technologies of National Academy of Sciences of Azerbaijan, Baku, Azerbaijan
S. A.
Nazirova
National Academy of Sciences of Azerbaijan, Institute of Information Technologies, Baku, Azerbaijan
spam
spam patterns base
service providers
e-mail filtering
human rights
antispam policy
multilevel architecture
account age
An approach, including a mechanism of antispam policy development and implementation by means of a two-way exchange of information between units of a multilevel hierarchical system of undesirable correspondence filtering, is proposed. It takes into account the right to access the required information. Another advantage of the proposed mechanism is minimized traffic in e-mail delivery to end users, effective identification of spam and prevention of false operations of spam filters. The proposed system algorithm enables the real-time recovery of the dynamic system (during the actual process), using input information about the system at discrete time moments.
A TECHNICAL SOLUTION TO ENHANCE THE STABILITY OF DATA TRANSMISSION NETWORKS IN CONDITIONS OF INFORMATION ATTACKS
1303-1308
10.1615/TelecomRadEng.v71.i14.60
A. N.
Zbinyakov
The Academy of Federal Security Guard Service of the Russian Federation, Orel, Russia
S. V.
Grebnev
Academy of the RF Federal Security Service, Orel, Russia
V. A.
Lyubimov
Academy of Federal Security Service, Orel, Russian Federation
R. N.
Shulgin
The Academy of Federal Security Guard Service of the Russian Federation, Orel, Russia
R. V.
Shpakovskii
Academy of the Russian Federal Security Service, Orel, Russian Federation
A. V.
Zorin
Academy of the Russian Federal Security Service, Orel, Russian Federation
data transmission network
TCP/IP protocol
network attack
parameters in TCP/IP header formats
A solution for expanding the capacities of the existing information search devices through protocol analysis and accounting the communication session establishment and management rules ensuring stable operation of automated systems in conditions of information attacks is discussed.
THE SPECIFIED NONLINEAR DIFFERENTIAL SELF-EXCITED OSCILLATORY EQUATION
1309-1329
10.1615/TelecomRadEng.v71.i14.70
V. I.
Gomozov
Kharkov National University of Radio Engineering and Electronics, 14, Lenin Ave, Kharkov, 61166, Ukraine
oscillatory equation
exact solution oscillator
The condition of self-excited oscillatory frequency setting theory as well as the necessity of its development have been shown. More accurate nonlinear differential equation which describes, contrary to the traditional mathematical Van-der-Pol model, not only the amplitude balance, energy correlations and amplitude setting but the phase balance, self-excited oscillatory frequency setting,. The latter have been confirmed experimentally.
OPTICAL RETUNING OF SPECTRAL CHARACTERISRICS OF QUANTUM- CASCADE STRUCTURES USING FOR SPECTROSCOPIC DETECTION OF EXPLOSIVES
1331-1340
10.1615/TelecomRadEng.v71.i14.80
S. I.
Petrov
Kharkiv National University of Radio Engineering and Electronics, 14, Lenin Ave, Kharkiv, 61166, Ukraine
M. V.
Klimenko
Kharkiv National University of Radio Engineering and Electronics, 14, Lenin Ave, Kharkiv, 61166, Ukraine
A. V.
Shulika
Kharkiv National University of Radio Engineering and Electronics, 14, Lenin Ave, Kharkiv, 61166, Ukraine
quantum cascade structure
spectral absorption characteristics
density matrix
interband transitions
optical retuning
space phase filling effect
In this paper we come up with a new approach to retuning the spectral characteristics of quantum-cascade structure amplification. The process of retuning proceeds using the continuous-wave optical pumping and it is strongly dependent upon the phase space filling effect. As suggested by the results from the mathematical simulation of the quantum-cascade structure optical properties, this particular method allows the spectral amplification characteristics to be retuned within the limits of 1.1 meV with no substantial change in the plan gain magnitude. The results thus obtained is of certain interest for spectroscopic detection of explosive.