在1747.5 MHz的高精度SAW带宽过用于LTE应用,使用波波变换技术
Hagar A Ali1, Mohamed I Ibrahem2, Hala M Abdelkader2
1Department of Communications and Electronics Engineering , October High Institute for Engineering and Technology , 12573, Giza, Egypt.
Scientific reports
|November 25, 2025
概括
本研究介绍了一种基于波幅变换的新型表面声波 (SAW) 过器,用于移动通信. 先进的射频 (RF) 过器设计为下一代系统提供高光谱分辨率和稳定的性能.
科学领域:
- 电气工程 电气工程
- 材料科学 材料科学 材料科学
- 信号处理 信号处理
背景情况:
- 移动通信需要更高的数据速率,需要更高频率的先进无线电频率 (RF) 过器.
- 表面声波 (SAW) 过器对于移动应用至关重要,因为其插入损失低,尺寸紧,成本效益高.
- 现有的SAW过器面临着满足越来越高的运行频率和精确过的需求的挑战.
研究的目的:
- 为GSM/LTE应用设计和模拟基于波形变换的SAW带通波器.
- 使用多阶段配置和窗口功能优化过器,以精确控制带宽和侧叶抑制.
- 用有限元素建模分析石英基板中的机电行为和声波传播.
主要方法:
- 设计了一个以1747.5 MHz为中心的表面声波 (SAW) 带通波器,使用波波变换集成.
- 采用多阶段配置与高斯,凯泽,汉宁和哈明窗口功能用于光谱分解和信号处理.
- 使用了COMSOL多物理来模拟压电石英基板的有限元模型,以及用于波形域分析的MATLAB.
主要成果:
- 实现了大约17.736 MHz的通带宽,侧叶衰减低于140 dB.
- 通过基板性质的变化证明了稳定的中心频率对齐.
- 通过FFT图表和位移配置文件确认了强大的频率选择性和基板依赖的声波传播.
结论:
- 拟议的波形集成SAW波器具有高光谱分辨率,强大的频率稳定性和低损耗传输.
- 这种设计显示了集成到下一代移动通信射频前端系统的巨大潜力.
- 波形变换集成有效地降低了计算复杂性,并增强了SAW波器设计的频域分析.
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