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Journal of the Korea Institute of Military Science and Technology 2008;11(3):138-145.
Design of Dual-Polarized Waveguide Slot Array Antenna for Synthetic Aperture Radar
Dong-Woo Yi
영상레이더용 이중편파 도파관 슬롯 안테나 설계
이동우
국방과학연구소
Abstract
In this paper, the waveguide slot array antenna which is capable of wide beam steering and dual polarization is designed for an X band synthetic aperture radar. In order to improve the restriction of beam steering range and to remove the butterfly lobes, a typical waveguide slot array antenna has been modified. To implement dual polarization, rod excited waveguide slot elements and ridge waveguide slot elements are alternately arranged. Location of slots, inclination of rod and offset distance of slots are determined on using array characteristic and conductance constant with radiating power on slots. The designed antenna is manufactured and measured with Near-filed measurement method.


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