環路濾波器 的英文怎麼說

中文拼音 [huánlùlǜbōqì]
環路濾波器 英文
loofilter
  • 環 : Ⅰ名詞1 （環子） ring; hoop 2 （環節） link 3 （姓氏） a surname Ⅱ動詞（圍繞） surround; encircle;...
  • 路 : 1 （道路） road; way; path 2 （路程） journey; distance 3 （途徑; 門路） way; means 4 （條理） se...
  • 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 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。
  2. 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。
  3. This paper presents the general project design firstly, and then introduces the system hardware circuit design in detail which includes the choice of chips, the loop filter parameters computation and the design of the power amplifier ' s peripheral matching circuit

    在介紹了系統總體方案設計之後，本文詳細介紹了系統的硬體電路設計，包括晶元的選擇，環路濾波器參數的設計，以及功率放大器外圍匹配電路的設計。
  4. Finally introduced the method that use adf4113 and provied the real test result of this multi - frequency, low phase noise pll frequency synthesizer with 30mhz working band and 1mhz frequency step. in addition, some method that solved the problem often occurred was introduced

    最後給出了由ad公司的電流泵數字鑒頻鑒相器adf4113和無源環路濾波器構成的頻率合成器的控制方法和實驗測試結果，實現了工作帶寬30mhz ，頻率步進1mhz的多點頻、低相噪頻率合成器。
  5. This research about the uhf frequency synthesizer mostly includes the following parts : 1 ) the dds modules include the dds ad9852 part, the lc band pass filter design part, the amplifier design part and lc low pass filter part. 2 ) the pll modules include the design of the loop filter which is the core of pll, lc band pass filter design and the amplifier design. 3 ) the controller modules of the system include the part of pc rs - 232 com port communication with the mcu and the part of the process of controller about urat and mcu

    本課題的研究主要包括以下幾個方面的內容: 1 ） dds模塊設計:包括ad9852部分、 lc帶通濾波器設計部分、放大器設計部分; 2 ） pll模塊設計:包括pll關鍵部件環路濾波器設計、 rflc帶通濾波器設計、末級放大器設計部分; 3 ）控制模塊設計:包括計算機與單片機串口通信的電路設計部分以及程序設計部分。
  6. The key of the fsk design is the calculation, simulation and optimization of the charge pump pll chip, vco and loop filter

    Fsk電路關鍵是電荷泵pll晶元、 vco電路和環路濾波器的參數計算和模擬優化。
  7. 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。
  8. 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。
  9. 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。
  10. 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。
  11. 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。
  12. The frequency of the pulse is the same as that of the crystal oscillator. the pulses sampled the output of the vco and generate the error signal. the error signal is amplified,

    誤差電壓經放大後送入環路濾波器進行濾波和再放大，然後去改變變容管偏置電壓，控制振蕩器輸出頻率，達到穩頻的目的。
  13. This paper first research on main technologies used by avs standard, which include prediction, transform, quantization, in - loop filter, and entropy encoding, and then focus on the 2d - vlc entropy coder of avs, which is context - based adaptive coder. this encoder operates on run - level pair, and it uses the type of current block and value of current coefficients to switch vlc code - table. these tables are designed according to the distribution of transformed coefficients, and this way is much better than using only one table to code all residual coefficients in one 8x8 block

    本文首先詳細研究了avs標準的核心技術，包括預測編碼、變換量化、環路濾波器以及掃描和熵編碼等，之後重點研究了avs標準中使用的基於上下文的2d - vlc變長編碼方法，這種方法編碼的是（ run ， level ）數對，同時根據當前編碼塊的類型和殘差系數這兩種上下文信息來切換碼表，這些碼表是預先根據變換系數在不同位置的分佈信息設計好的，這樣要比只使用一個變長碼表來編碼塊內所有位置上的殘差系數的壓縮效果要好得多。
  14. Loop filter proportion coefficient

    環路濾波器比例系數
  15. 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。
  16. The design method of loop filter is a new breakthrough, and it is one of the emphases in this paper

    其中，較大篇幅用於介紹位時鐘跟蹤環，該環路中環路濾波器的設計方法是一種全新的方法，也是本文的重點之一。
  17. In the pll ' s design and debugging, the loop filter ' s design theory and the affect of the loop - bandwidth on the phase noise was focused on

    在pll的設計和調試過程中，著重研究了環路濾波器的設計理論和環路帶寬對相噪的影響。
  18. It is sticking point for optimizing the performance of pll to confirm the parameter of vco ( voltage controlled oscillator ) and properly design the loop filter

    確定壓控振蕩器的各項指標、合理設計環路濾波器是優化環路性能的關鍵，本文對此作了比較詳細的分析。
  19. Loop filter is the key component to keep frequency synthesizer working steadily and outputting signal of excellent performance. in this paper, author proposes a practical method for loop filter, and verifies its reliability in experiment

    環路濾波器是頻率合成器能夠穩定的工作和輸出相位噪聲和雜散低的信號的關鍵，本文給出了環路濾波器具體的計算方法，並通過實驗證實了其可靠性。
  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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