双光束和双圆极化复杂反射阵列,用于Ku频段卫星通信
Yutian Ma1, Yuhui Ren2, Lehu Wen3
1School of Information Science and Technology, Northwest University, Xi'an, 710127, China.
Scientific reports
|March 14, 2025
概括
一种新的双循环偏振反射阵 (双CP RA) 已被开发用于Ku波段卫星通信. 这种低调的设计可以实现高收益和宽带宽,用于左手和右手循环偏振波.
科学领域:
- 电磁学和波浪理论
- 天线工程天线工程
- 超材料是什么?超材料是什么?
背景情况:
- 卫星通信系统需要高效的宽带天线.
- 双循环极化反射阵列在极化灵活性和增益方面具有优势.
- 现有的设计往往面临的限制在配置文件高度和带宽.
研究的目的:
- 提出一种新的宽带,低调的双循环偏振反射阵 (双CP RA) 用于Ku波段卫星通信.
- 为了研究一个单层的超表面单位电池,用于独立控制LHCP和RHCP波的相位.
- 为了证明1600细胞双CP RA的性能,用于特定的光束转向应用.
主要方法:
- 用功能,空气和金属层设计和模拟单层超表面单元细胞.
- 使用动态相和贝里相方法,通过改变微条线尺寸或细胞旋转来实现独立的极化控制.
- 在11.725 GHz工作的1600细胞双CP RA的制造和测量.
主要成果:
- 拟议的单元电池实现了0.12λ0的低配置,由于空气层扩展了带宽.
- 双CP RA成功地在20° (LHCP) 和-20° (RHCP) 产生了两个光束.
- 测量的增益为29.1dB (LHCP) 和29.22dB (RHCP),光圈效率分别为47%和48.3%.
- 实现了1dB增强带宽的37.4% (LHCP) 和37% (RHCP).
结论:
- 开发的低调双CP RA满足了Ku频道卫星通信的要求.
- 新型的超表面单元细胞设计使双圆极化能够独立控制.
- 取得的性能指标证明了这种设计对先进通信系统的潜力.
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