低档次双频段极化转换金属表面具有全向极化
Jun-Jie Zhang1,2, Wei-Xi Xu1, Yu-Tong Zhao1
1National Key Laboratory of Antennas and Microwave Technology, Xidian University, Xi'an 710071, China.
Materials (Basel, Switzerland)
|June 28, 2023
概括
本研究介绍了一种双频传输极化转换元表面 (PCM),用于高效的交叉极化转换. 低调的超表面在两个不同的频段中实现了超过90%的极化转换率.
科学领域:
- 电磁学和元材料的使用
- 应用物理 应用物理
- 微波工程 微波工程
背景情况:
- 超表面为操纵电磁波提供了新的方法.
- 有效的极化转换对于各种通信和传感应用至关重要.
- 现有的超表面经常受到狭窄的带宽,高配置或有限的角度性能的影响.
研究的目的:
- 提出和演示一个双频传输极化转换元表面 (PCM).
- 为了实现全方位的偏振转换与低档设计.
- 通过理论分析,模拟和实验验证来验证性能.
主要方法:
- 周期单元单元的设计包括三个金属层和两个基板.
- 补丁接收和补丁传输天线在单元细胞内的直角排列.
- 相当电路分析,电磁模拟和实验测量.
主要成果:
- 在双频段实现的极化转换率 (PCR) >90%:4.58至4.69 GHz和5.33至5.41 GHz.
- 在4.64GHz和5.37GHz的中心频率下,最大PCR达到95%.
- 证明了对任意事件极化方向的全向极化转换.
- 制造的元表面具有0.062λL.L.的低配置.
结论:
- 拟议的双频传输PCM有效地以高效率转换交叉极化.
- 超表面表现出全向偏振转换特征.
- 低形和双带性质使其适用于先进的电磁应用.
更多相关视频
相关概念视频
Potential Due to a Polarized Object
442
A neutral atom consists of a positively charged nucleus surrounded by a negatively charged electron cloud. When placed in an external electric field, the external electric force pulls the electrons and nucleus apart, opposite to the intrinsic attraction between the nucleus and the electrons. The opposing forces balance each other with a slight shift between the center of masses of the nucleus and the electron cloud, resulting in a polarized atom. On the other hand, a few molecules, like water,...
442
Group 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
Dual Nature of Electromagnetic (EM) Radiation
2.1K
Electromagnetic (EM) radiation consists of electric and magnetic field components oscillating in planes perpendicular to each other and mutually perpendicular to radiation propagation through space. EM radiation can be classified as a wave, characterized by the properties of waves such as wavelength (denoted as λ) and frequency (represented by ν).
Wavelength is the distance between two consecutive peaks (the highest point) or troughs (the lowest point) in the wave. Frequency is the...
Wavelength is the distance between two consecutive peaks (the highest point) or troughs (the lowest point) in the wave. Frequency is the...
2.1K


