ABSTRACT This paper presents a characteristic mode(CM) analysis of polarization conversion metasurface (MTS) placed in the near field of an exciting antenna. CM analysis has been carried out for three different MTS configurations with respect to excitation slot antenna. A systematic design approach has been adopted by identifying the orthogonal modes with phase difference. The orthogonal modes with broadside radiation patterns are identified and optimized to have 90 excitation phase difference. Simulated, as well as, the measurement results at the designed frequency are presented to validate the analysis.

中文翻译：

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线性到圆偏振转换超表面的特征模式分析

摘要 本文介绍了放置在激励天线近场中的极化转换超表面 (MTS) 的特征模式 (CM) 分析。CM 分析针对三种不同的 MTS 配置进行了激励缝隙天线。通过识别具有相位差的正交模式，采用了系统设计方法。具有宽边辐射模式的正交模式被识别并优化为具有 90 个激发相位差。模拟以及设计频率下的测量结果被提供以验证分析。