一个紧的三带全向天线设计用于CubeSat应用程序
Rao Shahid Aziz1, Slawomir Koziel2,3, Anna Pietrenko-Dabrowska3
1Department of Engineering, Reykjavik University, Reykjavik, Iceland. raos@ru.is.
Scientific reports
|April 8, 2025
概括
本研究介绍了一个紧的,封闭的立方卫星三带天线,在UHF,L和S频段运行. 它的设计确保了强大的,通向通讯,非常适合小型卫星任务.
科学领域:
- 航空航天工程 航空航天工程
- 电气工程 电气工程
- 电磁学 电磁学 电磁学 电磁学
背景情况:
- 立方卫星需要紧,高效的天线来实现可靠的通信.
- 传统的立方卫星天线通常需要外部部署,这带来了整合和机械挑战.
- 多频段操作对于多功能立方卫星通信系统至关重要.
研究的目的:
- 为CubeSat应用设计和验证一个紧的三带全向天线.
- 为了实现稳定的多频段共振和增强阻抗匹配在一个小的足迹.
- 提供一个完全封闭的天线解决方案,以提高机械强度和易于集成.
主要方法:
- 在天线设计中使用了有缺陷的地面结构 (DGS) 和金属通道.
- 模拟了超高频,L频段和S频段的天线性能.
- 制造并通过实验验证天线的阻抗匹配,辐射模式和效率.
主要成果:
- 实现了适合1U立方卫星的紧天线足迹 (0.26λ × 0.26λ × 0.013λ).
- 在0.755GHz (UHF),1.25GHz (L频段) 和2.28-3.74GHz (S频段) 显示稳定的多频段共振.
- 测量辐射效率超过90%,在所有工作频段的全向模式下.
结论:
- 拟议的封闭式三带天线为立方卫星通信提供了强大而高效的解决方案.
- DGS和金属vias有效地提高了性能,并使小型化成为可能.
- 这种设计非常适合下一代立方卫星任务,需要可靠,多频段,全向通信.
相关概念视频
01:20Design Example: Capacitance Multiplier Circuit
630
In integrated circuit technology, a capacitance multiplier is often utilized to produce a larger capacitance value when a small physical capacitance falls short. This is achieved by a circuit that multiplies capacitance values by a factor of up to 1000, such that a 10-pF capacitor can replicate the performance of a 100-nF capacitor.
The circuit illustrated in Figure 1 below incorporates two op-amps, with the first operating as a voltage follower and the second acting as an inverting amplifier.
The circuit illustrated in Figure 1 below incorporates two op-amps, with the first operating as a voltage follower and the second acting as an inverting amplifier.
630
01:23Transmission Line Design Considerations
107
Aluminum has become the material of choice for overhead transmission lines, surpassing copper due to its abundance and cost-effectiveness. The most prevalent type is the aluminum conductor, steel-reinforced (ACSR), which combines aluminum strands around a steel core. Other variants include all-aluminum conductors (AAC), all-aluminum alloy conductors (AAAC), aluminum conductor alloy-reinforced (ACAR), and aluminum-clad steel conductors. Advanced designs, such as aluminum conductors with steel...
107