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Abstract
The paper discusses the design details of a practical antenna problem under stringent mechanical restrictions and adverse environments for an airborne system where the solution has been found in a linear non-resonant array of resonant shunt slots on a dielectric-loaded rectangular waveguide. The antenna deviates from a normally-used non-resonant array in its excitation and terminations where both ends are shorted and excitation achieved through an ingenuous coaxial-waveguide adaptor to achieve a tunability to 1.08 SWR at a spot frequency in a given band of frequencies. The non-resonant array has been designed, under the short termination, taking into account the internal interaction between individual slot radiators at the principle wave through the individual wave amplitude matrices for the equivalent network representing the complete array. The antenna has been found to possess an excellent repeatability, repeatability and flight worthiness.
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Notes on contributors
B.K. Mukhopadhyay
B.K. Mukhopadhyay (b. 1949 November 5, Calcutta) A national scholar (1966), he received BTech (Hons) in Electronics and Electrical Comm Engg and MTech in Microwave & Radar Engg degrees in 1971 and 1973 respectively. Joined DRDL as a Senior Scientific Officer in November 1973. As a Project Manager, presently he is engaged in design and development of Microwave antennas and their feed systems for missile applications.
K.N. Pandey
K.N. Pandey (b. 1943 July 1, Varanasi) Received MSc Tech (Electronics and Radio Engg) and MTech (Gold Medallist in Rada Systems Engg) degrees from University of Allahabad and IIT, Kharagpur in 1965 and 1973 respectively. Joined DRDL in 1965 as Senior Scientific Officer. Presently he is the Head of the Electromagnetics Division and Deputy Project Director. His field of interest is microwave systems and subsystems for missile applications.