注入锁相振荡器的闭合相位噪声测量

Alberto Rodriguez, L. Dunleavy, T. Weller
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引用次数: 0

摘要

描述了一种已发布的注入锁定方法对近相噪声测量的独立实现和验证。实验研究了测量结果对系统内各种参数的灵敏度,包括被测振荡器的功率水平,以及测试系统中是否需要隔离器。结果表明,相位噪声测量对系统内功率电平变化具有较强的鲁棒性,隔离器虽然带宽有限,但在测量中确实发挥了必要的作用。本研究以一对1.4GHz自由运行振荡器作为测试用例。将注入锁定技术的测量结果与传统的检测器和鉴别器方法进行了比较。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Close-In Phase Noise Measurements of Injection Locked Oscillators
Independent implementation and verification is described for a published injection locking approach to close-in phase noise measurements. Experimentation was conducted to study the sensitivity of the measured results to various parameters within the system, including oscillator-under-test power level, and the need for an isolator in the test system. The results show that the phase noise measurement is relatively robust to power level variations within the system, and that the isolator, although bandwidth limiting, does perform a necessary role for the measurement. A pair of 1.4GHz free running oscillators are used as test cases in this study. Measurements from the injection locking technique are compared to those made using the more traditional detector and discriminator methods.
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