双带和高效率的地球表面循环到线性偏振转换器
Baoqin Lin1, Wenzhun Huang1, Jianxin Guo1
1Xijing University, Xi'an, People's Republic of China.
PloS one
|June 2, 2023
概括
这项研究引入了一种新型的异构性超表面,用于高效的双带圆向线性极化转换. 拟议的设备有效地将循环偏振波转换为两种不同的频率范围的线性偏振波,并具有高精度.
科学领域:
- 电磁学 电磁学 电磁学 电磁学
- 超材料是指一种超材料.
- 纳米光子学 纳米光子学
背景情况:
- 超表面为波浪操纵提供独特的电磁性质.
- 有效的圆向线性偏振转换对于各种应用至关重要.
- 不同类型的超表面使得定制的极化控制成为可能.
研究的目的:
- 提出并演示一种新型的异性质超表面,用于循环向线性极化转换.
- 为了实现高效率和双频带偏振转换.
- 通过理论分析,数值模拟和实验测量来验证设计.
主要方法:
- 理论分析一个Orthotropic异质异质的Metasurface.
- 数字模拟以确定反射相差 (Δφuv).
- 一个原型极化转换器的制造和测量.
主要成果:
- 超表面的反射相差 (Δφuv) 在两个频段接近+90°.
- 实现了高效的双带圆向线性偏振转换.
- 从8.08-9.27 GHz和13.80-27.11 GHz转换右手圆极化 (RHCP) 波为y极化波和左手圆极化 (LHCP) 波为x极化波.
- 在两个频段中,极化转换率 (PCR) 始终高于99.7%.
- 实验结果显示与模拟的良好一致.
结论:
- 拟议的异型变极表面是高性能双带圆向线性极化转换的可行解决方案.
- 该设计在指定的频率范围内显示出出色的效率和宽带宽.
- 经过验证的设计对需要精确的极化控制的应用具有前景.
相关概念视频
01:01Group Polarization
34.4K
Group polarization is the strengthening of an original group attitude following the discussion of views within a group (Teger & Pruitt, 1967). That is, if a group initially favors a viewpoint, after discussion the group consensus is likely a stronger endorsement of the viewpoint. Conversely, if the group was initially opposed to a viewpoint, group discussion would likely lead to stronger opposition.
34.4K
01:18Clipper Circuit
498
A clipper circuit is a fundamental wave-shaping device that harnesses the unique properties of diodes to alter and control waveform characteristics. This technology is widely used in electronic devices, especially in television and radar communication systems, where it enhances waveform modulation in both transmitters and receivers.
The operation of a clipper circuit can be exemplified by analyzing a dual-clipper configuration setup that integrates two ideal diodes, each paired with a biasing...
The operation of a clipper circuit can be exemplified by analyzing a dual-clipper configuration setup that integrates two ideal diodes, each paired with a biasing...
498