![Sample our Engineering & Technology journals, sign in here to start your access, latest two full volumes FREE to you for 14 days]({"type":"image" , "src" : "/sda/5933/TOC-Subject-Sample-2021-Engineering-Tech.jpg"})
Abstract
ECIL has established a full-fledged outdoor test range facility for testing microwave and VHF antennae working in the frequency band of 500 MHz to 12 GHz. The distance between the receiving tower and the transmitting tower is approximately 1 km and the primary reflecting area is fully levelled and made free of any undesirable obstructions. The range is equipped with complete test range equipment from M/s Scientific Atlanta, USA. The range has been fully evaluated at different frequencies and results are presented to show the perfectness of measurements and tolerance on accuracy at these frequencies. Measurements on various parameters of antennae have been carried out on 800 MHz, 1.5 GHz, 2 GHz, 6 GHz and 7 GHz frequencies on parabolic antennae of different diameters using several types of feeds and shroud arrangements. It is shown that the range is capable of measuring all essential parameters of a microwave antenna to a great accuracy.
Indexing Terms:
Additional information
Notes on contributors
V. C. Ananthan
ANANTHAN, V C: Obtained MSc degree in Physics with specialization in Electronics from Osmania University in Dec. 1969. From November, 1970 to April. 1973 he worked in the Microwave Laboratory, ECE Deptt., Indian Institute of Science Bangalore as Senior Technical Assistant in the PL-480 research project on Surfance Waveguides. Joined Electronics Corporation of India as Technical Officer in April, 1973 and since then he is engaged in the feed systems design for reflector antennas used in communication systems. He was also responsible for the planning, design and installation of outdoor Antenna Test Facility at ECIL
S. V. Raghavan
RAGHAVAN, S V (Dr): Age: 32, obtained his ME and PhD, specializing in Microwave Engineering. For 3 years, undertook teaching undergraduate and post-graduate classes in Microwave Electronics and Electromagnetic Theory at the University of Roorkee. For two years, carried out applied research at TIFR, Bombay, and was also engaged in the field of research for waveguide slot array antennas used in radar systems. He was also associated in the indigenous development and fabrication of microwave and tropo-scatter antenna feeds for various stypes of parabolic reflectors used in the communication field and shaped structures used in search radar systems.
Presently, co-ordinating the activities related to the project involving high efficiency antenna systems. Has been responsible for organizing a team of experienced microwave engineers in the testing and integration of system work for meeting stringent performance specification before and after erection at different sites in the country.
R. K. Gupta
GUPTA, R K (Dr): Obained his Master and Doctrate Degree from University of Rajasthan. Obtained PhD Degree on his work on satellite antennas from the University of Sheffield, UK.
Dr. Gupta has a vast experience of teaching and has published 42 papers. Worked as staff member in the Department of Electronics and Electrical Engineering, University of Sheffield for over 3 years Worked in Overseas Communication Services for 3 years.
Joined ECIL in 1972 and since then he has designed and installed an Antenna Test Range capable of operating in both the ground-reflection and the elevated mode to an accuracy of better than 0.2 dB. He is acssociated with the design, development and production of high-performance feeds for various types of communication systems. At present, Dr. Gupta is Production Manager, Microwave Division, ECIL.
S. P. Luthra
LUTHRA, SURAJ PRAKASH (Dr): After graduating from India, obtained Master's Degree in Engineering with Microwave as a special subject from Queen Mary College, London, UK. Obtained PhD Degree from University of London UK in 1962.
Was one of the Chief Systems Engineers with the Canadian Overseas Telecommunication for their Earth Station at Mill Village, Canada. He came to India as an Officer on Special Duty and was in-charge of Arvi Satellite Communication Earth Station Project of OCS, Bombay. Was responsible for the complete system engineering of Arvi Earth Station Project. He was also the Chief Inspection Officer for Arvi North Station Project.
Joined ECIL in 1968 as Head of the Microwave Division. Designed and developed indigenously various types of instruments, components and systems for various types of antennae designed for Satellite Earth Station, Tropo-scatter and Microwave Line-of-Sight. He has formed a highly experienced team of Microwave Engineers who are now in the process of designing, developing and testing of high and ultra-high performance communication antennae for the microwave communication system of Defence and P&T.
Dr. Luthra has to his credit number of technical papers published in the Journals of the IEEE.