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A Ground-Folded Slot Antenna for Imaging Radar Applications

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3 Author(s)
Woong Kang ; Gwangju Institute of Science and Technology, ; Seokjae Lee ; Kangwook Kim

A ground-folded slot antenna (GFSA) is presented. The antenna geometry is formed by folding the ground of a slot antenna along the slot length to enhance the gain and reduce the backward radiation. Two feeding methods are investigated for use with the GFSA: center feeding and edge feeding. The backward radiation is further reduced by placing a microwave absorber in the backside. The antennas are implemented and measured to show that the antennas operate over a wide bandwidth and have a higher gain and lower backward radiation than a conventional slot antenna. The performance of the proposed antenna as a sensor for an imaging radar is then investigated through a synthetic aperture radar experiment.

Published in:

IEEE Antennas and Wireless Propagation Letters  (Volume:10 )