Phase noise analysis of source injection coupled quadrature oscillator,International Journal of Circuit Theory and Applications

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Phase noise analysis of source injection coupled quadrature oscillator
International Journal of Circuit Theory and Applications ( IF 1.8 ) Pub Date : 2020-03-05 , DOI: 10.1002/cta.2763
Hengameh Azizi ₁ , Soolmaz Abbasalizadeh ₂ , Hossein Miar‐Naimi ₁

Affiliation

This paper analyzes the thermally induced phase noise and the up‐conversion of flicker noise into phase noise of source injection coupled quadrature oscillator (SIC‐QOSC), for the first time. Furthermore, this paper provides a complete analysis for the injection current of the SIC‐QOSC and extracts the closed‐form expressions for it for the first time, too. These expressions lead to obtaining the harmonics of the injection current as well as the oscillation amplitude, which is necessary for the phase noise analysis. To evaluate the extracted equations, this paper compares the calculated results with appropriate simulations. Comparisons confirm the accuracy of the proposed injection current expressions and the phase noise formulas. Using the closed‐form equations of phase noise, designers can understand the SIC‐QOSC's design tradeoffs and design the oscillator for given phase noise.

中文翻译：

源注入耦合正交振荡器的相位噪声分析

本文首次分析了热引起的相位噪声和闪烁噪声上转换为源注入耦合正交振荡器（SIC-QOSC）的相位噪声。此外，本文还对SIC-QOSC的注入电流进行了全面分析，并首次提取了封闭式表达式。这些表达式导致获得注入电流的谐波以及振荡幅度，这是相位噪声分析所必需的。为了评估提取的方程，本文将计算结果与适当的仿真进行了比较。比较证实了所提出的注入电流表达式和相位噪声公式的准确性。使用相位噪声的闭合形式方程，设计人员可以了解SIC-QOSC'

更新日期：2020-03-05

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