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2019•International Symposium on Antennas and PropagationRequires access

Side Lobe Suppression of Marine-Radar Linear Array Antenna by a Reflectionless Metasurface

Yuto Kato, Yuanfeng She, Satoru Kurokawa, Atsushi Sanada

Open publisher page 1 citations

Abstract

This paper demonstrates a side lobe suppression technique of a marine radar linear slot array antenna by a reflectionless metasurface. The metasurface introduces position-dependent phase shifts so that the phase across the entire aperture can be uniform. It is numerically shown that the metasurface drastically suppresses the maximum side lobe level at 9.41 GHz to be below -24 dB in both the E and H planes, and as a consequence, the peak gain of the main lobe is increased by 1.4 dB.

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What this paper is about

This paper demonstrates a side lobe suppression technique of a marine radar linear slot array antenna by a reflectionless metasurface. The metasurface introduces position-dependent phase shifts so that the phase across the entire aperture can be uniform. It is numerically shown that the metasurface drastically suppresses the maximum side lobe level at 9.41 GHz to be below -24 dB in both the E and H planes, and as a consequence, the peak gain of the main lobe is increased by 1.4 dB.

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Available abstract

This paper demonstrates a side lobe suppression technique of a marine radar linear slot array antenna by a reflectionless metasurface. The metasurface introduces position-dependent phase shifts so that the phase across the entire aperture can be uniform. It is numerically shown that the metasurface drastically suppresses the maximum side lobe level at 9.41 GHz to be below -24 dB in both the E and H planes, and as a consequence, the peak gain of the main lobe is increased by 1.4 dB.

Key concepts: Side lobe, Main lobe, Antenna (radio), Phase (matter), Radar, Optics, Physics, Antenna aperture

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