基于特征模理论的圆极化超表面天线设计

2020 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO) Pub Date : 2020-12-07 DOI:10.1109/NEMO49486.2020.9343602

Chang Ding, Jian Dong, Meng Wang, Jinjun Mo

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引用次数: 2

摘要

提出了一种基于特征模理论的圆极化超表面天线。求解了超表面结构的特征模态。确定了实现圆偏振的两种相互正交的特性模式。通过在超表面增加矩形槽来改变模式电流的正交性，提高了超表面天线的轴比性能。天线的总尺寸为35×35×4 mm3 (0.72λ×0.72λ×0.08λ在6.2 GHz)。仿真的S11带宽和3dB轴比带宽分别为30% (5.1 GHz ~ 6.9 GHz)和17.3% (5.8 GHz ~ 6.9 GHz)。

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Design of a Circularly Polarized Metasurface Antenna with Characteristic Mode Theory

A circularly polarized metasurface antenna based on characteristic mode theory is proposed in this paper. The characteristic modes of the metasurface structure were solved. And two mutually orthogonal characteristic modes to realize circular polarization was determined. By adding rectangular slots on the metasurface to change the orthogonality of the mode currents, the axial ratio performance of the metasurface antenna is improved. The antenna with an overall size of 35×35×4 mm3 (0.72λ×0.72λ×0.08λ at 6.2 GHz) is presented. The simulated S11 bandwidth and 3dB axial ratio bandwidth are 30% (5.1 GHz - 6.9 GHz) and 17.3% (5.8 GHz - 6.9 GHz), respectively.

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来源期刊

2020 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO)

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