A Rigorous Analysis of a Phase-Locked Oscillator Under Injection

作者：Li, Chien Jung^*; Hsiao, Chieh Hsun; Wang, Fu Kang; Horng, Tzyy Sheng; Peng, Kang Chun

来源：IEEE Transactions on Microwave Theory and Techniques, 2010, 58(5): 1391-1400.

DOI：10.1109/TMTT.2010.2042898

• Injection locking
• injection pulling
• local oscillator (LO) pulling
• phase-locked loop (PLL)

This study presents injection-pulling effects on a local oscillator (LO) for wireless applications. A discrete-time analysis is provided to predict output spectra of the LO pulled by a sinusoidal and angle-modulated injection signal. A phase-locked loop synthesizer with an injection signal is analyzed in frequency domain to account for the inherent bandpass filtering on the injection signal. In addition, a phase noise model is developed by using the proposed frequency-domain approach to characterize the overall phase noise of a phase-locked oscillator under injection. Comparison between theoretical predictions and experimental results shows excellent agreement.

• 出版日期2010-5
• 单位中山大学