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

Side Lobe Suppression of Marine-Radar Linear Array Antenna by a Reflectionless Metasurface
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无反射超表面抑制海洋雷达线性阵列天线的旁瓣

DOI:
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发表时间:
2019
期刊:
2019 International Symposium on Antennas and Propagation (ISAP)
影响因子:
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通讯作者:
A. Sanada
A. Sanada
中科院分区:
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文献类型:
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作者:
Y. Kato;Y. She;S. Kurokawa;A. Sanada

文献摘要

被引文献

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本文提出了一种基于无反射变换面的舰船雷达线缝阵天线旁瓣抑制技术。超表面引入了与位置相关的相移,因此整个孔径上的相位可以是均匀的。数值计算结果表明,该亚表面极大地抑制了9.41 GHz处E面和H面的最大旁瓣电平,使主瓣的峰值增益提高了1.4dB。
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.