Planar Elliptical Nonresonant Array for Airborne Radar Applications

Abstract

This paper describes the work carried out at Electronics and Radar Development Establishment towards the design and development of the airborne ultra-low sidelobe level antenna for radar applications. This elliptical contoured antenna employs longitudinal offset radiating slots on the broadwall of rectangular waveguide and is of travelling wave type. Studies have been made on the effect of slot width on the bandwidth of the nonresonant array. The radiating elements are fed by a compact waveguide power divider network. The design aspects of the power divider and the phase compensation network have been outlined. The details of the elliptical planar array antenna with the measured far-field results have been presented.

Additional information

Notes on contributors

S Christopher

S Christopher received his BE (Hons) in Electronics and Communication from the University of Madras in 1978, MTech from Indian Institute of Technology, Kharagpur in 1980 and his PhD in 1985 from the Indian Institute of Technology, Madras. He worked from 1980 to 1985 as project associate at the Indian Institute of Technology, Madras and from 1985 to 1988 as senior engineer at Bharat Electronics Limited. Ghaziabad. He joined Electronics and Radar Development Establishment, Bangalore in 1988. He is presently Additional Director in LRDE. Bangalore and is heading C-Radar, division in LRDE. He is heading various defense projects for the Government of India. He has over 75 publications in national and international journals and symposiums. His fields of interest are microwave antenna design and measurements. He is a fellow of the Institution of Electronics and Telecommunication Engineers, India and a member of IEEE.

V V S Prakash

V V S Prakash received his BTech in Electronics and Communication Engineering from Nagarjuna University in 1991 and his MTech in Microwave Engineering from the Indian Institute of Technology, Kharagpur in 1993. He joined Electronics and Radar Development Establishment. Bangalore as a scientist where he is currently employed. He is pursuing PhD at Indian Institute of Science. Bangalore. His fields of interest are computational electromagnetics, slotted antennas, antenna measurements and radar signal processing, where he has over 15 publications in national and international journals and conferences. He is a member of the Institution of Electronics and Telecommunication Engineers, India.

V A Abid Hussain

V A Abid Hussain received his BTech in Electronics and Communication Engineering from Mangalore University in 1988 and his MTech in Electronics from Cochin University in 1990. He joined Electronics and Radar Development Establishment, Bangalore as a scientist where he is currently employed. He is pursuing PhD at Indian Institute of Science, Bangalore. His fields of interest are radar antennas, microwave CAD, microwave measurements and networks, where he has several publications in national and international journals and conferences. He is a member of the Institution of Electronics and Telecommunication Engineers, India.