鎖相濾波器 的英文怎麼說

中文拼音 [suǒxiānglǜbōqì]
鎖相濾波器 英文
phase locked filter
  • 鎖 : Ⅰ名詞1 （安在開合處使人不能隨便打開的器具） lock 2 （姓氏） a surname Ⅱ動詞1 （上鎖） lock up 2 ...
  • 相 : 相Ⅰ名詞1 （相貌; 外貌） looks; appearance 2 （坐、立等的姿態） bearing; posture 3 [物理學] （相位...
  • 濾 : 動詞（除去液體雜質） filter; strain
  • 波 : Ⅰ名詞1 （波浪） wave 2 [物理學] （振動傳播的過程） wave 3 （意外變化） an unexpected turn of even...
  • 器 : 名詞1. （器具） implement; utensil; ware 2. （器官） organ 3. （度量; 才能） capacity; talent 4. （姓氏） a surname
  • 濾波器 : [電子學] electric filter; （electric） wave filter; filter
  1. The third, after theoretically analyzing, the following practicable methods are put forward : 1 ) automatically pick - up the synchronous information by analyzing the spectrum of intercepted video - leaking information ; 2 ) realizing the phase lock and the electronic image stabilization by integral - projection and differential - positioning ; 3 ) improving the effect of accumulation mean filter and the pectination filter by using electronic image stabilization ; 4 ) automatically adjusting image acquisition parameters by detecting the image entropy, therefore the quality acquired image is improved ; 5 ) to realize the quantitative test of a leaking extent, a standard test picture was designed. finally, a proto type for leaking information processing based on our techniques mentioned above and the virtual instrument principle was designed and tested

    在理論分析的基礎上，提出了以下的實用技術： 1 ）用譜分析方法從截獲的信息中自動提取同步信息； 2 ）用積分投影、微分定位的方法進行相位檢測，實現可靠的鎖相和電子穩像； 3 ）將電子穩像技術用於重加濾波和梳狀濾波的濾波方法，改進了濾波效果； 4 ）通過檢測圖像信息熵實現圖像採集參數的自動調整，改進了圖像採集的質量； 5 ）設計了用於儀器定標的標準測試圖，可以對泄漏信息進行定量檢測。
  2. The designs of the pfd, digital filter ocxo and fractional - n counter in the frequency synthesizer unit are discussed, based on the pll theory. in order to improve the precision of pll, some design methods of pfd are given, and its feasibility is validated by the fpga hardware implement

    2 .在鎖相理論指導下，第三章討論了頻率合成器設計中的鑒頻鑒相器、數字濾波器、恆溫壓控振蕩器和分頻電路設計。為了進一步提高頻率合成的精度，文中給出了提高鑒頻鑒相器性能的一些設計思想，結合fpga的硬體設計驗證了其可行性。
  3. The field of video signal processing is now undergoing a digital reform. the digital processing technique is clearly expatiated in this paper, such as a / d convert, anti - alias filter, clamp control, gain control, pll, synchronization circuit, color decoder, comb filters

    本文詳細敘述了視頻圖像的數字處理方法，重點介紹了視頻信號數字化技術、抗混疊濾波器、箝位、增益控制、鎖相技術、同步時鐘產生、電視信號亮色分離、彩色解碼等技術，這些關鍵技術為視頻信號的數字化處理提供了重要的基礎。
  4. The carrier wave is modulated directly by the baseband signal at several frequency point in l band and s band. firstly, this paper clarifies the theory of i / q modulation, elaborates evm and acpl, and analyzes the effect of amplitude and phase unbalance and dc offset on evm. secondly we review the basic principle of phase locked loop and it ’ s composing parts, including the basic conception and design method of pll frequency synthesizer, especially introduce the charge pump pll frequency synthesizer in detail

    首先，在闡述i / q正交調制基本原理的基礎上，通過對誤差矢量和鄰近通道功率泄漏的詳細分析，定性、定量地討論了各種非理想電路因素（如相位不平衡、幅度不平衡、直流偏差等）對調制器性能的影響;其次，介紹了鎖相環的工作原理和基本組成部分，包括鎖相環的設計和環路濾波器的設計，特別詳述了電荷泵鎖相頻率源;第三，介紹了採用直接調制技術模擬衛星信號的射頻前端的設計;最後，對整個直接射頻調制系統進行測試，結果基本上達到了課題要求。
  5. 3. with comprehensive improvement of transponder including structural adjustment to lna ; optimization of ( phase locked loop ) pll filter ; structural adjustment to the transmitter and phase error adjustment to the intermediate frequency demodulation circuit, we have successfully enhanced sensitivity, expanded dynamic range, increased transmitting power and improved the spectrum purity ; decreased capture time for pll ; improved the signal quality after demodulation ; reduced its volume and power consumption. 4

    3 、對通信機的全面改進，包括lna結構的調整、鎖相環環路濾波器的優化、發射部分結構的調整以及中頻解調電路的相差調整，提高了系統的接收靈敏度、改善了本振的頻譜純度、減少了鎖相環的鎖定時間、使中頻解調后的信號質量大為提高，同時還減少了體積、節約了系統的功耗。
  6. Critical circuits in developing this board, such as tht modulation circuit, demodulation circuit, pll and filter, were analyzed in detail. parameters adopted in these circuits were also calculated. based on all that mentioned above, a rf board was implemented and related tests and experiments were successfully done as well

    本文主要對cdpd移動終端數據機的硬體開發中的關鍵部分?高頻部分電路進行了研究，論文在cdpdv1 . 1規范的基礎上，提出了射頻部分電路的實現方案，選擇了合適的核心晶元，並對電路中的調制解調電路、鎖相環、濾波器等關鍵模塊進行了較為詳細的分析，對電路中的有關參數進行了計算。
  7. First, we analysize the performance of coherent and noncoherent dlls, then we give an implementation scheme of dll and a design method of carrier tracking loop. the design methods and a implemention scheme of a fir shaping filter is proposed in the fifth part

    首先分析了相干和非相干延遲鎖定環的性能，接著給出了一種dll跟蹤環路的實現方案和一種載波跟蹤環路的設計方法。第五部分介紹了一種fir成型濾波器的設計和實現方法。
  8. Then the paper researches the operational principle and realization method of each subassembly of the digitized phase - locked loop, which includes numerical controlled oscillator, digital phase dectector, and digital filter etc., and also discusses the method of improving the performance of each subassembly

    接著闡述了數字化鎖相環各個部件的工作原理及實現方法，包括數字控制振蕩器，數字鑒相器，數字濾波器等，研究了改進各部件性能的方法。
  9. The basic operation principle of phase - locked frequency synthesizer and the type of circuits are expatiated systematicly in this paper. the principle of operation on sampling phase detector and some characteristics including the linear tracking and phase noise in phase loop circuits are analyzed deeply. the research is emphased on the theory and design method of circuits in the sampling phase - locked frequency synthesizer. then, the expansion capturing circuit is analyzed and designed for better performance of capturing loop circuits. at last, the loop filter is also analyzed and contrived taking account of effection of additional phase shift by the sampling - holder. the general research on the theory and technology of sampling phase lock in the paper will make a basement for the development of new product

    本文系統的闡述了鎖相頻率合成器的基本工作原理及電路類型；較深入地分析了取樣鑒相工作原理及電路、鎖相環路的線性跟蹤特性和相位噪聲特性；重點對取樣鎖相頻率合成器電路理論和設計方法進行了研究；為了改善環路的捕獲性能，對擴捕電路進行了分析和設計，並用wewb32軟體對電路進行了模擬；考慮到取樣保持器的附加相移影響，對環路濾波器進行了分析和設計。
  10. In this paper, a pll frequency synthesizer working in l band is researched. at fist, we review the basic of phase lock loop and it ' s constituent part. after that the basic conception and design method of pll frequency synthesizer was introduced, especially introduced the charge pump pll frequency synthesizer in detail

    本文是採用鎖相原理設計的l波段頻率合成器，首先對鎖相環路的工作原理和基本組成部分進行了簡單的介紹，然後介紹了鎖相頻率合成器的原理和設計方法，主要介紹了目前小型頻率合成器產品中使用最廣泛的由電荷泵數字鑒頻鑒相器和無源環路濾波器構成的頻率合成器。
  11. Then according to the emphasis of the design, went deeply into the theory of pll frequency synthesizers widely used, described pll ’ s working principle, structure and several types in detail, and made research and analysis of pll frequency synthesizers ’ phase noise, including the effect of the active loop filter on the phase noise, and give some methods to make improvement as well, such as changing loop filter form, reducing divide number, and increase phase detector frequency, etc. then paper introduced the principle character and phase noise analysis of direct digital frequency synthesizer ( dds ) and injection phase lock circuit, which are also important circuits in the design

    論文首先對幾十年頻率合成器的發展進行概述，而後針對本次設計的重點，對應用較為廣泛的鎖相頻率合成理論進行了深入的探討，詳細介紹了鎖相環的工作原理、組成結構和鎖相類型，並對鎖相頻率合成器的相噪特性進行了研究分析，包括有源環路濾波器對于相噪的影響，提出了改善相位噪聲的幾點措施:改善環路形式、降低分頻數、增大鑒相頻率等。接著介紹了直接數字頻率合成器（ dds ）和注入鎖相電路的原理特點以及相噪分析，它們也是本次設計的重要電路。
  12. Phase - lock part of the system was simulated in system view that is a eda tool, including picking - up carrier synchronization algorithm and designing filter, etc

    系統採用相干解調方法，載波同步採用costas環，在系統開發過程中，利用eda工具systemview對鎖相部分包括載波同步演算法和數字濾波器設計等內容進行了模擬分析。
  13. The thesis describes a prototype fractional frequency synthesizer which is supported by a project granted by the ministry of science and technology of pr china. firstly, based on the principle of pll, this paper briefly describes three basic pll components : phase detector ( pd ), low pass filter ( lpf ), voltage controlled oscillators ( vco ), analyzes the linearized pll and summaries the transfer functions of third - order pll with ideal intergrator filter respectively. based on a microwave vco, the single point frequency pll frequency ranging from 2. 2 to 2. 5ghz is developed

    首先，從鎖相環的基本理論、原理出發，分析了鎖相環中的三個基本部件：鑒相器、環路濾波器和壓控振蕩器，此後，針對線性化鎖相環進行了分析，研究了在使用比例積分濾波器時，三階鎖相環的環路參數計算；在電路實現時選用了lmx2353 ，在此基礎上，完成了2 . 2 ~ 2 . 5ghz范圍內的小數頻率合成器設計。
  14. This paper introduces the principle of phase - locked loop and analyzes the performance characteristics of pll chip adf4106 which has wide bandwidth and low power consumption. and then introduces the design method of a kind of low phase noise frequency synthesizers which uses single chip processor to control the chip. the application supplies a good design method for high frequency synthesizer

    介紹了鎖相環路的工作原理，分析了低功耗寬帶集成鎖相環晶元adf4106的工作特性，並介紹了一種利用單片機控制該晶元的低相位噪聲頻率合成器的設計方法，討論了環路濾波器的設計，為高頻頻率合成器的設計提供了很好的思路。
  15. After pin ’ s noise and equivalent circuit are discussed, this thesis introduces technology and methods of signal management, including pre - amplifier and differential - amplifier, bpf, lia, etc. at the end of paper, the system of photoacoustic spectrometer is proved by experiment

    本文在討論了光電二極體的噪聲和等效電路之後，介紹了信號處理的技術和方法，包括前置放大器、差分放大器和有源帶通濾波器的設計及用於微弱信號檢測的鎖相放大技術。
  16. On the basis of our lab ' s previous achievements, the author has studied three kinds of digital signal processing methods - the method based on a digital phase locked loop, the method based on quadrature demodulation, and the method based on adaptive funnel filter ( aff ) and sliding goertzel algo rithm ( sga ). the author has also studied the cmf driving principle, various analog driving circuits, driving waves, and digital driving methods

    主要研究了三種科氏流量計的數字信號處理方法：基於數字鎖相環的方法、基於正交解調的方法和基於自適應funnel濾波器和滑動goertzel演算法的方法；以及科氏流量計驅動的原理、各種模擬驅動的波形、電路以及數字驅動的方法等。
  17. Sigma delta modulation frequency synthesis is an advanced technology that applies in pll ( phase - locked loop ) frequency synthesizer, which could transform the spurs created by fractional - n synthesizers into phase noise that could be filtered by inherent low - pass identity in pll

    此技術應用-調制將鎖相環頻率合成器中分數分頻器產生的相位雜散轉化為相位噪聲，通過鎖相環本身低通濾波特性濾除，從而使用單環即可獲得很高頻率解析度和極低的相位雜散。
  18. The paper introduces the phase - locked loop first, including its working theory, the design of the loop filter and noise

    本文首先介紹了鎖相環。對它的工作原理、環路濾波器的設計以及噪聲理論進行了闡述。
  19. On the basis of previous work, we developed a new data processing system by use of dsp & oop. the new system overcame the problems existed in the old data processing system successfully, such as the bug which cause program dead loop when the data is too long, and the frequency leak due to principle limit of fft filter. in addition, we eliminated the measurement error brought on by phase warp

    我們在前人的工作基礎上，利用現代數字信號處理技術和面向對象的軟體開發技術，統一了彈上黑匣子數據處理系統的操作平臺，完善了轉速、掃描角測試數據處理系統，修正了原有處理程序中的因數據長度過長而導致程序死鎖的bug ；利用有限沖擊響應（ fir ）濾波器，在濾去噪聲的同時，有效地解決了矩形窗fft濾波的頻譜泄漏問題；另外還解決了因相位偏差而導致的測試誤差。
  20. The fourth, mainly talk about the phase noise in the pll, and discuss the specific affect on out put phase noise caused by different components in frequency synthesizer, such as mixer, amplifier, multipler, divider, oscillator, phase detector etc. the last part is about how to choice the natural frequency of pll in order to get the better performance in phase noise

    第二章從鎖相環的基本原理出發，介紹了鎖相環的幾個基本部件:鑒相器?環路濾波器和壓控振蕩器，對線性化鎖相環進行了詳細的分析，對數字鎖相環做了詳細的介紹，分析了鎖相環的相位噪聲模型，討論了頻綜中的混頻器
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