IEICE Transactions on Electronics
Special Section on Microwave and Millimeter-Wave Technology
Side-Lobe Reduced, Circularly Polarized Patch Array Antenna for Synthetic Aperture Radar Imaging
Mohd Zafri BAHARUDDINYuta IZUMIJosaphat Tetuko Sri SUMANTYOYOHANDRI
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Volume E99.C (2016) Issue 10 Pages 1174-1181

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Abstract

Antenna radiation patterns have side-lobes that add to ambiguity in the form of ghosting and object repetition in SAR images. An L-band 1.27GHz, 2×5 element proximity-coupled corner-truncated patch array antenna synthesized using the Dolph-Chebyshev method to reduce side-lobe levels is proposed. The designed antenna was sim-ulated, optimized, and fabricated for antenna performance parameter measurements. Antenna performance characteristics show good agree-ment with simulated results. A set of antennas were fabricated and then used together with a custom synthetic aperture radar system and SAR imaging performed on a point target in an anechoic chamber. Imaging results are also discussed in this paper showing improvement in image output. The antenna and its connected SAR systems developed in this work are different from most previous work in that this work is utilizing circular polarization as opposed to linear polarization.

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© 2016 The Institute of Electronics, Information and Communication Engineers
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