通过负载设计两个紧的宽带单极,用线性近似的块组件进行加载
Jiansen Ma1, Weiping Cao1, Xinhua Yu1
1Guangxi Key Laboratory of Wireless Wideband Communication and Signal Processing, Guilin University of Electronic Technology, Guilin 541004, China.
Micromachines
|January 8, 2025
概括
两种新的超宽带单极天线被开发用于远程地面通信. 优化的频率依赖负载使宽带宽成为可能,在不同的频率范围内实现了低于3.5和2.5的VSWR.
科学领域:
- 电气工程 电气工程
- 电磁学 电磁学 电磁学 电磁学
- 天线理论天线理论
背景情况:
- 远程地面通信系统需要具有广泛运行带宽的天线.
- 传统天线通常具有狭窄的带宽,这限制了它们在各种通信场景中的应用.
- 超宽带 (UWB) 天线为高容量,多服务通信提供了解决方案.
研究的目的:
- 设计和模拟两个直线超宽带 (UWB) 单极天线.
- 调查使用线性频率依赖的一次性负载来实现UWB特性.
- 评估用于远程地面通信应用的天线性能.
主要方法:
- 采用带有负载单极和帽子的直线结构的天线设计.
- 模拟固体负载作为线性频率依赖的组件来模拟实际行为.
- 模拟使用时刻方法 (MoM) 与非对称波形评估 (AWE) 结合,以实现高效的频率扫描.
- 对于平行RLC负载的阻抗函数建模,用于用于AWE兼容的频率依赖组件.
主要成果:
- 一个天线实现了30-750 MHz的覆盖范围,电压常态波比 (VSWR) 低于3.5.
- 第二个天线覆盖了800MHz-3000MHz范围,VSWR低于2.5.
- 优化负载参数对于实现所需的超宽带性能至关重要.
结论:
- 开发的直线UWB单极天线显示了对陆地全向应用的有希望的性能.
- 使用依赖频率的负载有效地扩大了天线带宽.
- 模拟方法为设计UWB天线提供了一种高效的方法,使用实用的组件模型.
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