邊帶放大器 的英文怎麼說

中文拼音 [biāndàifàngdàqì]
邊帶放大器 英文
marginal amplifier
  • 邊 : 邊Ⅰ名詞1 （幾何圖形上夾成角的直線或圍成多邊形的線段） side; section 2 （邊緣） edge; margin; oute...
  • 放 : releaseset freelet go
  • 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
  • 邊帶 : rim band
  • 放大器 : amplifier; pantograph; lawnmower; enlarger; magnifier
  • 放大 : amplify; magnify; boost; enlarge; blow up; gain; amplification; enhancement; multiplication; magn...
  1. Slightly observant of the smoky lights ; of the people, pipe in mouth, playing with limp cards and yellow dominoes ; of the one bare - breasted, bare - armed, soot - begrimed workman reading a journal aloud, and of the others listening to him ; of the weapons worn, or laid aside to be resumed ; of the two or three customers fallen forward asleep, who in the popular high - shouldered shaggy black spencer looked, in that attitude, like slumbering bears or dogs ; the two outlandish customers approached the counter, and showed what they wanted

    這兩位帶點外國味的顧客走進了朦朧的燈光里，經過了口裡銜著煙斗手上玩著軟沓沓的紙牌或泛黃的多米諾骨牌的人，走過了一個光著上身滿身煙塵大聲讀著報的人和他的聽眾，走過了人們掛在世卜或放在手邊備用的武器，也走過了兩三個躬著身子睡覺的人一一他們穿著流行的高肩粗布黑短衫，像是幾頭酣睡的熊或狗。
  2. Theoretical analysis and simulation results demonstrate that asymmetries in lower and upper sidebands and imd magnitude variation depending on envelope frequency and junction temperature can appear, these results are in accordance with measurement results, and show that electrical and thermal memory effects exist

    理論分析和模擬結果表明功率放大器上下邊帶不平衡和互調失真幅度依賴于包絡頻率和結溫，結果和測量的結果是一致的，說明存在電和熱記憶效應。
  3. At present the manufacture of surface acoustic wave use the technology of the final submicron. a series of the devices of low insertion loss, high q saw rayleigh surface acoustic wave resonators or stws that insertion loss has less than 5db, load quality factor ( ql ) is more than 1000 on the quartz piezoelectric with zero of first temperature factor in the research. these difference frequencies are 60mhz, 280mhz, 739mhz and 1ghz of normal frequency and at also surface acoustic wave. using 1. 25db noise factor amplifier, careful design curcuit, good setting printed curcuit board, and using the 1ghz surface transverse wave resonator as frequency element, researching the low phase noise surface acoustic wave with sideband phase noise near ? 120dbc / hz deviating 1khz on carrier, spurious suppress with 80db

    本研究採用一階溫度系數為零的壓電石英基片上製作出損耗小於5db 、有載品值因素（ ql值）超過1000的一系列低損耗、高q值聲表面波rayleigh波或stw諧振器，頻率分別為60mhz 、 280mhz 、 739mhz和1ghz等不同頻率的高性能聲表面波諧振器。並採用噪聲系數為1 . 25db的低噪聲系數放大器，精心設計電路，優化設計布置印製電路板，用標稱頻率為1ghz的聲表面波諧振器為頻率控制元件，製作出在偏離載頻1khz處的單邊帶相位噪聲近- 120dbc / hz 、雜波抑制達80db以上的低相位噪聲聲表面波振蕩器。
  4. There are three power transistor which have been widely used in s band now : bipolar junction transistor ( bjt ), gaas metal - oxide semiconductor field effect transistor ( gaas mosfet ) and lateral diffuse metal - oxide semiconductor field effect transistor ( ldmos fet ). thanks to the advantages, such as, wide frequency, easy power supply, good stability, the ldmos fet has used in the motion telecommunication

    目前在s波段人們常用的放大器有雙極性晶體管（ bjt ） 、砷化鎵場效應晶體管（ gaasmosfet ） 、邊緣擴散場效應晶體管（ ldmosfet ）等，由於ldmosfet具有頻帶寬、供電方便、穩定可靠等優勢，目前已經廣泛用於移動通信3g的研究。
  5. Based on the sufficient analysis of ppf control rule, the research into the algorithm combination between fuzzy control and ppf control is made to develop the intellectual ppf control system and design automatic tracking system to the edge of strip steel by the step motor, the signal collecting circuit with the capacitance sensor, servo magnifying circuit, and interface circuit are designed also

    本文在充分分析ppf的控制規律的基礎上，研究了模糊控制與ppf控制演算法結合，組成智能ppf控制系統，設計了步進電動機帶鋼邊緣自動跟蹤系統，電容傳感器信號採集電路，伺服放大電路及介面電路。
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