基于螺旋单元的超表面极化转换器研究
发布时间：2018-08-03 17:41
【摘要】：超表面材料是一种具有强大电磁操控能力的人工复合介质,常用于实现吸波、滤波和极化转换等功能。本文提出一种基于螺旋单元的超表面极化转换器,通过对螺旋单元辐射场的原理分析,得到螺旋单元的最优设计参数,并详细分析了线性极化波入射时,该极化转换器对应的有效工作频带、入射角适应范围和极化波轴比。HFSS仿真结果表明,该超表面材料,在2.5~3.5GHz频段内,入射角适应范围为0~70?,-10dB反射波衰减的相对带宽大于10%,在对应频段内透射波的电场轴比小于2,接近圆极化波,达到了较好的极化转换器效果。
[Abstract]:Super-surface material is a kind of artificial composite medium with powerful electromagnetic control ability, which is often used for absorbing, filtering and polarization conversion. In this paper, a supersurface polarization converter based on spiral element is proposed. By analyzing the principle of radiation field of spiral element, the optimal design parameters of spiral element are obtained, and the incident linear polarization wave is analyzed in detail. The simulation results of the effective frequency band, the adaptive range of incident angle and the polarization wave axis ratio of the polarization converter show that the supersurface material is in the 2.5~3.5GHz band. The adaptive range of incident angle is 0 ~ 70 ~ 10dB, the relative bandwidth of reflection wave attenuation is greater than 10, and the electric field axis ratio of transmitted wave is less than 2 in the corresponding frequency band, which is close to the circular polarization wave and achieves a good polarization converter effect.
【作者单位】： 南京理工大学电光学院探测与控制工程系;
【分类号】：TN015
本文编号：2162484
[Abstract]:Super-surface material is a kind of artificial composite medium with powerful electromagnetic control ability, which is often used for absorbing, filtering and polarization conversion. In this paper, a supersurface polarization converter based on spiral element is proposed. By analyzing the principle of radiation field of spiral element, the optimal design parameters of spiral element are obtained, and the incident linear polarization wave is analyzed in detail. The simulation results of the effective frequency band, the adaptive range of incident angle and the polarization wave axis ratio of the polarization converter show that the supersurface material is in the 2.5~3.5GHz band. The adaptive range of incident angle is 0 ~ 70 ~ 10dB, the relative bandwidth of reflection wave attenuation is greater than 10, and the electric field axis ratio of transmitted wave is less than 2 in the corresponding frequency band, which is close to the circular polarization wave and achieves a good polarization converter effect.
【作者单位】： 南京理工大学电光学院探测与控制工程系;
【分类号】：TN015
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