SAW振荡器的相位噪声分析

详细信息

Phase Noise Analysis of SAW Oscillators

摘要: 声表面波振荡器是一种典型的反馈振荡器。根据Leeson反馈振荡器相位噪声模型,分析了SAW振荡器的相位噪声特点,特别是不同的SAW反馈元件,分析结果表明不同的SAW反馈元件通常有不同的相位噪声特点。还讨论了降低相位噪声电平,提高振荡器的谱密度的方法和途径。
- 声表面波 /
- 振荡器 /
- 相位噪声 /
- 延迟线
Abstract: Surface acoustic wave (SAW) oscillator is a kind of typical feedback oscillators with feedback elements.Its phase noise characteristics is analyzed in the context of Leeson's model of feedback oscillator phase noise and particular attention is given to the cases of different feedback SAW elements,since different feedback elements ordinarily denote different phase noise characteristics in the view of our points in this paper.Approaches and methods for reducing phase noise levels are discussed along with an analysis of reported attempts to obtain improved spectral purity.
- surface acoustic wave /
- oscillator /
- phase noise /
- delay line