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Publications
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Publications - Publications

Complex qualifying of meshes of the UHF active phased array 

M.V.Markosyan A.A.Hovhannisyan, V.G. Avetisyan

Proceedings of International Scientific Conference “Radiation and dispersion of electromagnetic waves” ИРЭМВ-2009./Taganrog – Divnomorskoye, Russia, 27th June - 1st July, 2009 – p.285-289.

 Questions of complex qualifying of transmitter meshes (TM) of UHF of the active phased array, including testing of TM for functionality, testing of the polarization performances of waves radiated by meshes, qualifying of TM on conformity with demanded parameters for exclusion of defective TM from processes of mounting and assemblage of more integrated unit –module are considered. The designed technique of certification of assembled modules is given.

 
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Publications - Publications

Active phased array modules testing

 V.H. Avetisyan, M.V. Markosyan, A.A. Hovhannisyan, S.G. Eyramjyan

Experiment // Reports of National Academy and the State Engineering University of Armenia. Series of Technical Sciences,- 2008y. – Vol.61, №4, - Page 577-583.

 Description of measurement stand of active phased array (APA) trial module, which consist of four elementary transmit-receive cells, and experimental research results are suggested. Measurement system, which permits measurement automation, is briefly described. 

 
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Publications - Publications

Active phased array modules testing. Report

 V.H. Avetisyan, M.V. Markosyan, A.A. Hovhannisyan, S.G. Eyramjyan

1. Testing methodology // Reports of National Academy and the State Engineering University of Armenia. Series of Technical Sciences,- 2007y. – Vol.60, №3, - Page 516-522.

The methodology of active phased array module testing is suggested. The module consists of four elementary receiving-transmitting cells, each of which contains an electronically controlled attenuator and phase shifter, power amplifiers, low-noise amplifiers and radiator, parameters of which are tested sufficiently simply by the suggested methodology.

 
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Publications - Publications

Problems of  automation of water systems management

  M.Markosyan

Bulletin, - YSUAC, - 2007,- №2

 The article examines issues of management of water systems, study  and interpretation of the existing problems, as well as  issues of automation of management. Issues of operation of water systems are viewed and the necessity of automation of the counting of  water  consumption are demonstrated as basis for organization of operation of the systems. Whit the help of simple calculations, the procedure of detection of places damages and leakages. Requirements for engineering systems of provision of automation of the water system management are brought in. A solution of the issue of automation through up-to-date communication systems is offered.

 
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Publications - Publications

 Patent №2022A2, Republic of Armenia, 2007

Active Phased array transmit-receive module testing device  

M.Markosyan, S.Eyramjyan, A.Hovhannisyan, V.Avetisyan

Invention concerning to antenna technique and may be used for full testing of transmit-receive modules, which include in active phase array antenna AAPA of radiotechnical systems of different functions. Goal of invention - increasing of testing level of AAPA transmit-receive module. Device determines attenuation discrete and intervals inserted by controlled attenuators of each transmit - receive element of module, discrete and intervals of phase shifts inserted by the same phase -shifters, dispersions of complex transmitter element characteristics in signal receive and transmit modes, and polarization characteristics of waves radiated by module elements.

 
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Publications - Publications

The complex near-field antenna radio-measurements in the short millimeter waveband. Radio-system designing

M.V. Markosyan, V.H.Avetisyan

Radiotechnika, - 2006, - №12, - p.59-64 (in Russian).

 A designing of radio-measurement circuits, which are the parts of the antenna complex near-field automatic measurement systems of short millimeter waveband, are discussed. In the offered circuits the quadrature processing of a useful signal is used with account of an analysis   of centimeter waveband similar radio-measurement circuits.

 
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Publications - Publications

Apparatus Complex for Active Phased Array Module Testing

Suren Eyramjyan

Mediterranean Microwave Symposium ,14-16 May 2007, Budapest, Hungary  

 

An active phased array (APA) module testing methodology and corresponding construction of apparatus complex for its realization are suggested. The complex permits to test module's cells parameters, including testing of APA radiation elements polarization characteristics.

 
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