在 IoST CubeSat 应用中用于认知无线电的低距离天线系统
Khaled Aljaloud1, Kamel Sultan2, Muhammad Ikram2
1College of Engineering, Muzahimiyah Branch, King Saud University, Riyadh 11451, Saudi Arabia.
Sensors (Basel, Switzerland)
|July 11, 2023
概括
这项研究介绍了用于空间物联网 (IoST) CubeSat应用中的认知无线电 (CR) 的新型低调天线. 该天线有效地利用超高频 (UHF) 频段,提高了空间通信系统的频谱利用率.
科学领域:
- 电气工程 电气工程
- 航空航天工程 航空航天工程
- 无线通信无线通信
背景情况:
- 立方卫星越来越多地用于空间物联网 (IoST) 应用.
- 有效利用有限的超高频 (UHF) 和非常高频 (VHF) 频谱对于立方卫星应用至关重要.
- 认知无线电 (CR) 为频谱管理提供了一种动态和灵活的方法.
研究的目的:
- 建议在UHF频段运行的IoST CubeSat应用中为CR提供一个低调,高效的天线.
- 提高对立方卫星通信系统的频谱利用率.
- 为各种IoST应用提供多功能天线解决方案.
主要方法:
- 一个单层基板天线的设计,集成一个循环极化宽带 (WB) 半六角槽和两个窄带 (NB) 频率可重新配置的循环槽.
- 半六角槽的激发使用直角的缩料线和电容器加载用于循环极化.
- 集成瓦拉克特二极管到环槽中,以实现频率重新配置和模式多样性.
主要成果:
- 在WB插槽中,在宽带 (0.57GHz到0.95GHz) 中实现左手/右手圆极化.
- 证明了两个NB天线在宽带 (0.6GHz至1.05GHz) 上的频率重新配置.
- 微型化的天线尺寸使用曲环设计,并实现了图案多样性.
结论:
- 拟议的天线设计有效地解决了在IoST CubeSat应用中高效频谱利用的需求.
- 将CR技术与可重新配置的天线集成,提高了空间通信的灵活性和性能.
- 测量结果验证了模拟性能,证实了天线适用于UHF频段IoST CubeSat应用的适用性.
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