紧型IC-Fed空洞支持的CP交叉双极天线,具有宽带宽和宽光束宽度,用于SatCom移动终端
Kunshan Mo1,2, Xing Jiang1, Ling Peng1,3
1School of Information and Communication, Guilin University of Electronic Technology, Guilin 541004, China.
Sensors (Basel, Switzerland)
|January 28, 2026
概括
这项研究介绍了用于移动卫星通信终端的紧型,宽带宽,循环偏振天线. 它实现了稳定的性能和广角覆盖,非常适合多频段应用.
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:
- 卫星通信 (SatCom) 移动终端需要带宽和光束宽的天线来实现可靠的连接.
- 传统天线在广泛频率范围内实现稳定的循环极化 (CP) 性能时经常面临局限性.
研究的目的:
- 为移动SatCom终端提供一种新的紧型,宽带宽,宽光束宽的循环极化 (CP) 天线设计.
- 为了提高CP性能稳定性,并缩小天线尺寸以实现实际集成.
主要方法:
- 使用一个空腔支持的交叉二极体作为主要散热器.
- 集成了商用方位功率分离器/相位变换器IC,以取代传统的相位延迟线,减轻分散引起的相位误差.
- 包含一个紧密合的弧形寄生条和减少腔体截面,以扩大光束和增强辐射.
主要成果:
- 实现了1.76至3.08 GHz的测量阻抗带宽 (IMBW),完全覆盖了轴比 (AR) 带宽 (<3dB).
- 在1.7-3.1 GHz频段中保持了2dBic以上的峰值增益.
- 在工作频段中,已证明半功率光束宽度 (HPBW) 为 114-142°,轴向比光束宽度 (ARBW) 为 114-144°,为 3 dB.
结论:
- 拟议的天线设计为需要宽带和广角覆盖的多频段SatCom终端提供了一个有前途的解决方案.
- 集成先进的组件和结构修改有效地解决了小型化和稳定的CP性能要求.
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