November 12 2019
  • Accessibility Dropdown
    • A+
    • A 
    • A-
    • A
    • A
  • Social Medias
    • Facebook Page
    • Twitter Page
  • Sitemap
  • हिन्दी

Overview

Overview of Aerospace

ECIL Played a pioneering role in supporting the ambitious programms of ISRO.   ECIL’s Antenna Products Division has its lineage that dates back to 1968, when ARVI Satellite Communication (ASCOM) group was constituted by drawing experts from various organizations to execute the design, develop, manufacture, install, test and commission the country’s 1st INTELSAT Class-A Earth Station Antenna at ARVI, Pune for providing the gateway for overseas communications for the traffic originating around Mumbai region.

ASCOM Group has designed the 97ft Earth Station Antenna  with a king post  Elevation over Azimuth pedestal, servo system and antenna control unit.  The station was installed and commissioned in 1968.  The Feed was imported.  The control and servo system was developed by BARC.   After the completion of the above project, Microwave Antenna System Engineers Group {MASEG (ISRO)} was formed to further the R&D activities on Microwave and satellite earth station antennas for providing communication facilities in the country.

The MASEG group got merged with ECIL in 1972, and Antenna Products Division was formed in ECIL with the aim of taking up commercial production of Microwave and Earth station antennas.

In 1975, ECIL delivered another 97ft Earth Station Antenna with king post pedestal (similar to ARVI Antenna) at Lachhiwala in Dehradun for providing the International gateway to the traffic originating from Delhi region. The expertise gained during the execution of above two projects has firmed up the knowledge base at ECIL to take up design and production of various types of communication antennas.

   

 1. for Terrestrial Communication
          a. Troposcatter antennas
          b. Line of Sight (LoS ) antennas
   2. for Satellite Communication
          c. Ground/Earth Station Antennas

Troposcatter Antennas : 

Large Bill Board antennas focus a high power radio beam at the troposphere mid way between the transmitter and receiver. A certain portion of the signal is refracted and received at a similar antenna at the receiving station. 

 

 Earth Station Antennas :
     
 On the earth station front, ECIL continued its progress and delivered and installed 3 Nos. of 8m earth station antennas at Port Blair, Kavaretti and Aizwal with indigenous design to bring the far flung areas of Northeast into country’s telecom network.
   
 When the INSAT programme was initiated, ECIL developed and delivered 2 Nos. of reflectors required for 14m diameter Antennas for TTC application at MCF, Hassan with control system by jointly working with BARC.  During the same period, ECIL also successfully absorbed the limited know-how from NEC, Japan in productionising medium sized Earth station antennas of diameter 11M, 7.5M and 4.5M.Several of these antennas were delivered to various users like DOT, ONGC, NTPC and MCF.  
   
 In 1987, ECIL successfully designed, developed, manufactured and installed the 11M diameter full motion antenna for TTC application at MCF, Hassan. The 32m diameter Wheel & Track antenna was installed at ARVI, Pune which was executed jointly in collaboration with NEC, Japan. During this period, ECIL acquired know-how for the indigenous realization of a 32M Wheel & Track antenna employing the beam wave guide feed from NEC, Japan.  
   
 A full fledged Design Center exists, where more than 30 engineers work in the Antenna design involving various disciplines of Structural, Mechanical, Microwave and Control systems aspects.  The center is well equipped with various software like NASTRAN, PATRAN, SIMULINK, Auto CAD, CATIA for Structural and Mechanical designs, WASPNET for RF design etc.  to provide cost effective solutions, many pre and post processing support routines for verifying design compliance with regard to surface accuracy, pointing error, system performance predictions, both for structural and RF are available in the design center.