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基于數(shù)字化相位特征處理的相位噪聲測量技術(shù)
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資料類別
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電子電工畢業(yè)論文（設(shè)計） |
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課程(專業(yè))
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測試計量技術(shù)及儀器 |
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關(guān)鍵詞
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相位噪聲|等效鑒相頻率 |
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適用年級
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研究生 |
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身份要求
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普通會員 |
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金 幣
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50 （金幣如何獲得？） |
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nh |
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文件大小
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1080K |
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發(fā)布時間
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2011-08-11 10:49:00 |
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預(yù)覽文件
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無 |
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0 |
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kj008 |
內(nèi)容簡介：
碩士學(xué)位論文 基于數(shù)字化相位特征處理的相位噪聲測量技術(shù)，正文共83頁。
【摘要】 隨著通信等現(xiàn)代電子系統(tǒng)的廣泛應(yīng)用和迅速發(fā)展,對標(biāo)準(zhǔn)信號使用的高精密頻率源提出了越來越高的要求。因?yàn)樗鼈兣c相位噪聲測量的要求密不可分,在很多高級電子系統(tǒng)和設(shè)備中,核心技術(shù)往往是有一個低相位噪聲的頻率源,它常常是整個系統(tǒng)的限制因素。相位處理和相噪測量在基本頻率源的特性、頻率基標(biāo)準(zhǔn)的研究應(yīng)用及性能測試中發(fā)揮著越來越重要的意義。近些年來因?yàn)轭l譜儀日益完善,頻域相位噪聲的測量技術(shù)在頻率短期穩(wěn)定度測量方面已占主導(dǎo)地位。在本論文中長期進(jìn)行基于等效鑒相頻率的相位處理方法的研究,在已有研究成果的基礎(chǔ)上,提出了一種新的技術(shù)途徑—基于數(shù)字化相位特征處理的異頻相位處理方法。它從原理上突破了傳統(tǒng)相位處理方法中必須同頻才能鑒相的理論,使得相位處理變得更具有普遍意義。論文第三章從原理上進(jìn)行分析,第四章中詳細(xì)介紹了基于該原理的相位噪聲測量系統(tǒng)各個模塊的設(shè)計及實(shí)現(xiàn),第五章中通過前期的實(shí)驗(yàn)證明方案的可行性與新穎性。相比傳統(tǒng)相位噪聲測量系統(tǒng),不必借助于高精度的頻率合成器,就可以組建出基于單一參考源的相位噪聲測量系統(tǒng)。由于不需要采用頻率合成的方法來進(jìn)行相位噪聲的測量,降低了成本,使儀器的復(fù)雜性大大降低,有利于減小測量系統(tǒng)的本底噪聲,而且更有利于精度的進(jìn)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.
【關(guān)鍵詞】 相位噪聲； 等效鑒相頻率； 數(shù)字化； 異頻相位處理；
【Key words】 Phase Noise； Equivalent Phase Comparison Frequency； Digitization； Phase Processing between Signals with Different Frequencies；
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