[硕士论文] 基于数字化相位特征处理的相位噪声测量技术 [复制链接]

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硕士论文-基于数字化相位特征处理的相位噪声测量技术，正文共83页。
【摘要】 随着通信等现代电子系统的广泛应用和迅速发展,对标准信号使用的高精密频率源提出了越来越高的要求。因为它们与相位噪声测量的要求密不可分,在很多高级电子系统和设备中,核心技术往往是有一个低相位噪声的频率源,它常常是整个系统的限制因素。相位处理和相噪测量在基本频率源的特性、频率基标准的研究应用及性能测试中发挥着越来越重要的意义。近些年来因为频谱仪日益完善,频域相位噪声的测量技术在频率短期稳定度测量方面已占主导地位。在本论文中长期进行基于等效鉴相频率的相位处理方法的研究,在已有研究成果的基础上,提出了一种新的技术途径—基于数字化相位特征处理的异频相位处理方法。它从原理上突破了传统相位处理方法中必须同频才能鉴相的理论,使得相位处理变得更具有普遍意义。论文第三章从原理上进行分析,第四章中详细介绍了基于该原理的相位噪声测量系统各个模块的设计及实现,第五章中通过前期的实验证明方案的可行性与新颖性。相比传统相位噪声测量系统,不必借助于高精度的频率合成器,就可以组建出基于单一参考源的相位噪声测量系统。由于不需要采用频率合成的方法来进行相位噪声的测量,降低了成本,使仪器的复杂性大大降低,有利于减小测量系统的本底噪声,而且更有利于精度的进一步提高。
【Abstract】 With modern electronic systems widely used and quickly development, high precision frequency sources used in standard signals has been put forward higher and higher requirements. They are inseparable from the phase noise measurement requirements. In many advanced electronic systems and equipment, the core technology is often has a low phase noise frequency source. It is often limited factors of the whole system. Phase processing and phase noise measurement now play an increasingly important role in the research and performance measurement of the basic frequency sources.These Days, with the gradual perfection of Spectrum Analyzer, phase noise measurement in frequency domain has played an important role in the measurement of short term frequency stability. In this paper,we make a long term research of phase processing technology based on equivalent phase comparison frequency , on the basis of research achievement,a new method of phase processing between two signals with different frequencies technology based on digital phase feature is presented. It breaks through the traditional theory which should use phase discrimination in signal of same frequency, and has more general significance for phase processing. In this paper, the principles was showed in Chapter three, the design and realization of the system were described in detail in the fourth chapter. The advance experiments in the fifth chapter proved that this scheme is feasible and novel. Compared with the traditional phase noise measurement system, because of no use of frequency synthesizer, low cost, simple circuits, high locking precision and low phase noise is possible.
【关键词】 相位噪声； 等效鉴相频率； 数字化； 异频相位处理；
【Key words】 Phase Noise； Equivalent Phase Comparison Frequency； Digitization； Phase Processing between Signals with Different Frequencies；

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• 硕士论文-基于数字化相位特征处理的相位噪声测量技术
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