Items of № 9, 2010

The Electrosvyaz Magazine is one of the leading science & technical magazines in Russia.

Power-supply systems’ behavior based on hydrogen energetics’ membrane technologies

DMITRIKOV V.F., LIVSHITZ  A.I., DMITRIEV B.F., SHUSHPANOV D.V., NOTKIN M.E., ALIMOV V.N.

Key words: hydrogen power engineering, composite membrane, hydrogen generator (reformer), fuel cell, pulse voltage сonverter, controller.


 

Modeling, designing   and optimizing microwave stripline elliptic  filters  with inverters

KUBALOVA A.R., MAXIMOV A.P., TOMASHEVICH S.V., KUBALOV R.I.

The analysis, simulation and optimization of microwave elliptic filter with inverters, implemented in a symmetrical strip line are presented. The electrical characteristics of elliptic BPF with inverters (attenuation, AFC, PFC, VSWR, group delay, etc.) are calculated. The distributions of the electric field in the insulators and current density on the conductors’ surface are described.

Key words: elliptic filter, inverter, attenuation characteristic, the amplitude-frequency characteristic (AFC), the phase — frequency characteristic (PFC), group delay, current density, electric field, optimization, quarter-wave transmission line, scattering parameters.


 

Usability of RFS for LTE networks’ implementation in Russia

GLUSHKO V.I., URODVLIVCHENKO V.P., KOSTIN A.N.

Possible frequency allocations for LTE networks being planned in Europe, Americas, Pacific Region and Oceania, Middle East and Africa are reviewed. Analysis of possible options to use the frequency bands identified for IMT for the benefit of LTE implementation in Russia is provided.


Spectrum aggregation at frequency channelization in LTE ADVANCED networks

TIKHVINSKY V.O., TERENTJEV S.V., VYSOCHIN V.P.


Prospects of 790-862 MHz frequency bands’use for LTE networks

VYSOCHIN V.P., BOLSHAKOV V.P., DU K.O.


Compatibility analysis of the Russian and international telemetry standards requirements for modulation methods

ANNENKOV A.M.

CCSDS and IRIG international standards are considered. Recommended modulation methods and parameters of spectral efficiency, error-immunity and complexity are examined. Compatibility Recommendations for compatibility of the Russian and international standards requirements on modulation methods are given.

Key words: spectral mask, spectral efficiency, noise immunity, bit error rate, continuous phase modulation, international standards.

 

 

 

 

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