figure noise 中文意思是什麼

figure noise 解釋

  • figure : n 1 外形，形狀，外觀；姿態。2 畫像，塑像。3 圖形，圖案；插圖；圖表。4 人影，人形；人物。5 風度，...
  • noise : n 1 聲音，聲響。2 叫喊；嘈雜聲，噪音；喧鬧聲；吵鬧，騷動，騷擾。3 〈古語〉謠言，風聲。4 〈美國〉...
  1. According to the application background and the dismatch between single antenna and differential lna, an active balun is needed and has been designed. then we put forward a design scheme that does co - simulation of an active balun and a differential lna on one chip together. at 2. 45ghz, this lna provides a forward gain of 28. 931db with a noise figure of 2. 485db, while drawing 19. 1ma from a 1. 8v supply

    從本設計的應用背景出發，考慮到單端天線與差分lna之間的不匹配性，設計了一個介於兩者之間的有源平衡轉換電路? balun （ balance - unbalunce ） ，並提出了將這個balun電路與前面設計的差分lna作為一個整體進行了模擬的設計方案。
  2. The in - depth analysis of the noise in gilbert mixer including parasitical capacitors, in which the mixer and lna have been connected together and the noise figure of mixer can be expressed explicitly as that of lna

    回在包括寄生電容的情況下，對雙差分對混頻器（ gilbertmixer ）的噪聲性能做了深入分析，把混頻器和低噪放聯系在一起，可像低噪放一樣，直觀的表達混頻器的噪聲系數。
  3. A noise figure improved l - band edfa based on hi - bi ( high birefringence ) fiber loop mirror as ase rejecter is presented for the first time

    主要工作如下: 1 .首次提出了基於雙折射光纖環鏡優化l - bandedfa噪聲性能的方案。
  4. By utilizing the comb - like reflection spectrum of a hi - bi fiber loop mirror to suppress the ase ( amplified spontaneous emission ) of a double - pass edfa, the noise figure of this amplifier is much improved

    利用雙折射環鏡的梳狀反射特性抑制雙通edfa的ase ，從而使放大器的噪聲性能得到了明顯改善。
  5. We illustrate the wavelet package analysis that can obtain the time - frequency distribution figure of noise signal, which can be used to define gray - image. through image - average, we can get the standard time - frequency distribution images of different main bearing gap. based on that, a main bearing wear fault diagnosis model using image matching is set up

    然後對圖像進行平均，得到主軸承在不同間隙狀態下的「標準」時頻分布圖，建立了柴油機主軸承間隙圖像匹配的故障診斷模型，匹配時所用的參數為兩幅圖像之間的歐氏距離。
  6. A research into the effect of funnel mcp on the relationship between current gain and noise figure

    擴口微通道板對電流增益和噪聲因子關系的影響
  7. It is evident from figure 42 that if a ground network contains loops there is a greater danger of it being vulnerable to emfs induced by external magnetic fields, and of ground current ' escaping " from high current areas to cause noise in sensitive regions

    從圖11 . 42可見，如果存在地線迴路，外界磁場切割地線迴路時容易出現感生電動勢，大電流電路會「四處流竄」 ，影響精密電路。
  8. During this precess, using the technology of optimizing the widths of both common source mosfet and common gate mosfet under a fixed power, we obtained a compromised result of power consumption and noise figure

    設計過程中，在限定功耗的前提下，主要針對共源晶體管和共柵晶體管的柵寬，對電路的性能進行了優化，使得設計的lna的噪聲系數最小。
  9. Figure - retrofitting noise barriers - tentative 10 - year implementation programme

    圖道路加裝隔音屏障及隔音罩暫時性方案
  10. Some few minutes had elapsed, and the stranger began to show manifest signs of impatience, when a slight noise was heard outside the aperture in the roof, and almost immediately a dark shadow seemed to obstruct the flood of light that had entered it, and the figure of a man was clearly seen gazing with eager scrutiny on the immense space beneath him ; then, as his eye caught sight of him in the mantle, he grasped a floating mass of thickly matted boughs, and glided down by their help to within three or four feet of the ground, and then leaped lightly on his feet. the man who had performed this daring act with so much indifference wore the transtevere costume

    過了一會兒，此人開始顯示出不耐煩的樣子，正在這時，屋頂的洞口外面發出了一種輕微的響聲，立刻有一個黑影擋住了亮光，那分明是一個男人的身影，那人正在急切而仔細地察看他身下的這一大片地方，當他看到那個穿披風的人時，他就抓住一簇向下飄垂密密地纏結在一起的根須，順著它滑到了離地三四尺的地方，然後輕輕地跳了下來，他穿著一套勒司斐人的服裝。
  11. Assuming the loop is known to be only a single straight segment of 26awg cable, there is no additive loop or afe noise, and the remote - end is terminated by a high - impedance load for all frequencies, figure 5 shows the resulting selt performance

    假定已知環路只有一個單個的直段26awg電纜，沒有附加的環路或者afe噪聲，對所有的頻率遠端通過一個高祖抗負載終止，圖5給出了selt的性能結果。
  12. Based on our theoretical predictions, we find optimal splicing parameters on fsm - 30s fiber splicer for low loss joints between erbium doped fiber and other single mode fibers. we also experimentally demonstrate a novel three - stage erbium - doped fiber amplifier with high gain, low noise figure, and high output power. finally, a prototype of a gain - clamped fiber amplifier is obtained with high gain ( 26 db ), low noise figure ( 5. 3 db ), high output power ( 17 dbm ), and large bandwidth ( 31 nm )

    文章研究了摻鉺光纖（ edf ）與其他光纖低損耗焊接問題，得到光纖熔接機低損耗熔接的最佳參數，這對摻鉺光纖放大器的科研生產具有一定的指導意義；研究了新型的三段級聯泵浦優配的摻鉺光纖放大器的優化光路結構，得到高增益，低噪聲，大輸出功率的摻鉺光纖放大器；最後研製成功高增益（ 26db ） ，低噪聲（ 5 . 3db ） ，大輸出功率（ 17dbm ） ，寬帶（ 31nm ）增益箝制摻鉺光纖放大器樣機。
  13. In order to measure the characteristics of such semiconductor optical amplifier, we adopted a set of measurement system. this measurement system can be used to measure the characteristics of all kinds of active or inactive optical passive components. such device presents good polarization insensitivity ( < 0. 9db ), wide 3db bandwidth ( > 33nm ) at 0 - 200ma and different input signal light wavelength and power, the maximum fiber - to - fiber gain of 10db, lossless operation current of 50 - 75ma for different input signal light wavelength and power, large extinction ratio ( > 50db ) and lower noise figure ( nf ) ( < 8db )

    與張瑞英博士一起，首次利用該種有源區結構制備出偏振不靈敏半導體光放大器，並在0 - 200ma注入電流范圍內獲得33nm的3db帶寬，在不同信號波長，不同信號功率0 - 200ma的注入電流范圍內，偏振相關損耗均《 0 . 9db ，在耦合差損為7db / facet的條件下，最大fiber - to - fiher增益達10db ，無損操作電流為50 - 70ma ，消光比達50db以上，而噪聲指數則低於8db ，最小可達4 . 6db 。
  14. A novel method based on a map of noise figure and gain is proposed to analyze efficiently the dependence of the noise figure and gain for edfas on the edf length and the pump power. the characteristics of various edfas are studied and compared. secondly, some important parameters are introduced to describe the characteristics of edfas

    文中從理論上系統分析設計了結構參數對各種edfa性能的影響，最後通過實驗驗證；第四，針對波分復用系統要求edfa必須具備增益鎖定功能，提出採用單根光纖光柵的方法來箝制l - bandedfa的增益。
  15. Noise factor, noise figure

    躁聲系數
  16. Noise factor noise figure

    躁聲系數
  17. The methods and the experimental setups for measuring the gain and noise figure of an edfa are emphasized. we introduce how to measure the characteristics of each component of an edfa, especially the gain and absorption coefficient of an erbium doped fiber ( edf ). thirdly, four types of simple and novel l - band edfa structures with low noise, high gain and low gain ripple are proposed to satisfy the requirement of a dwdm system

    基於考慮自發輻射噪聲（ ase ）的giles模型，建浙江大學博士學位論文立了這種edfa的全光增益箱制理論模型;理論和實驗分析了四種可能的光路結構、泵浦波長、光纖光柵反射波長和反射率、泵浦功率以及摻餌光纖長度等參t對其箱制特性的影響。
  18. Using the order - up - to ( out ) method and two demand forecasting patterns, that are exponential smoothing forecasting and moving average forecasting, we give the frequency response plot and the noise bandwidth figure with the help of the system control tool of matlab. we show that information sharing helps to reduce the bullwhip effect, especially at higher levels in the chain. however, the bullwhip effect problem is not completely eliminated and it still increases as one moves up the chain

    本文的重點內容就是用控制論的理論和方法來研究牛鞭效應，應用補充到目標庫存策略（ out ）和兩種不同的需求預測方法，即指數平衡預測法和移動平均數預測法，用matlab的系統控制工具箱作為分析工具，分別給出了信息共享情況下和無信息共享情況下的頻率響應圖和帶寬比較圖，證明了信息共享能夠減弱牛鞭效應，尤其是在供應鏈的高級階段，但牛鞭效應並不能完全消除，仍舊隨著供應鏈階段的上升而增加。
  19. Optical amplifiers - part 3 - 2 : test methods for noise figure parameters - electrical spectrum analyser method

    光學放大器.第3 - 2部分:噪音指數參數的試驗方法.電頻譜分析儀法
  20. Optical fibre amplifiers - basic specification - test methods for noise figure parameters - electrical spectrum analyzer method

    光纖放大器.基礎規范.噪音指數參數的試驗方法.電頻譜分析儀法
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