數字振蕩器 的英文怎麼說

中文拼音 [shǔzìzhèndàngqì]
數字振蕩器 英文
digital oscillator
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 字 : Ⅰ名詞1 （文字） character; word 2 （字音） pronunciation 3 （字體） form of a written or printed ...
  • 振 : 動詞1. （搖動; 揮動） shake; flap; wield 2. （奮起） brace up; rise with force and spirit
  • 蕩 : Ⅰ動詞1 （搖動; 擺動） swing; sway; wave 2 （無事走來走去; 閑逛） loaf; wander; roam; loiter; go a...
  • 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
  • 數字 : 1. （表示數目的文字; 表示數目的符號） figure; digit; numeral; character; numeric character 2. （數量） quantity; amount
  1. Delay line oscillator is composed of broadband amprifer adjustable attenuator and saw sensor device. after output signal of delay line oscillator is smoothed, it mixes with 109mhz local oscillation signal. its differential frequency signal is smoothed by low - pass filter trimmed by shaping circuit and processed by digital processing circuit

    延遲線振蕩器由寬帶放大器、可調衰減器和聲表面波質量傳感器件構成。延遲線振蕩器輸出信號經濾波后與109mhz的本機晶體振蕩器輸出信號相混頻，通過低通濾波取其差頻，並經整形後由數字信號處理電路處理。
  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. For digital audio encoding and decoding modules, delta - sigma modulation is introduced and audio data, preambles with accessorial data are multiplexed according to the digital audio interface standard ; for carrier wave, pll frequency synthesizer is used ; for frequency modulation, voltage control oscillator is taken ; for demodulation, pll frequency discrimination is adopted

    調制方式，並按照數字音頻介面標準對音頻數據、同步字和附加信息進行通道復用;對于載波信號，採取鎖相環頻率合成技術手段;對于頻率調制，採用壓控振蕩器;對于解調電路，採取鎖相環鑒頻電路。
  4. Single frequency source is usually used as local oscillator in communication system and radar system, also as a reference clock in digital circuits, so it is a extensive - applied technique

    固定頻率源可以在在通訊系統和雷達系統中作為本機振蕩器，也可以作為數字電路的基準時鐘信號，因此得到了廣泛的應用。
  5. Firstly, the theory basis of if digital receiver is introduced, which includes over - sampling digital mixing receiving scheme and mathematic model with which the scheme is proved correctly. secondly, the numerically controlled oscillator ( nco ) is designed and realized

    首先介紹了中頻數字接收機採用的過采樣數字混頻數字接收方案，然後給出數學模型，從理論上論證了該方案的可行性;二、數控振蕩器設計與實現。
  6. 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。
  7. It is very difficult to realize digital rf, but we can realize digital if. digital if mainly include : digital up convert ( duc ^ digital down convert ( ddc ), a / tk d / a and number control oscillator ( nco )

    目前實現射頻數字化還有一定的困難，但可以實現中頻部分數字化。數字中頻處理主要包括數字上變頻、數字下變頻、 a d與d a的處理以及數控振蕩器等。
  8. In this dissertation, the method to design and realize the digital receiver in the field programmable gate array ( fpga ) has been discussed ; combining coordinate rotation digital compute ( cordic ) to design nco, we get a efficient structure without multiplications

    本論文正是運用現場可編成邏輯器件（ fpga ）設計與實現數字接收機問題開展研究，結合坐標旋轉數值計算（ cordic ）演算法實現數控振蕩器（ nco ） ，得到一種免乘法器高效可移植性好的數字接收機fpga實現結構，並在現有的硬體平臺上進行了接收機系統的調試，測試結果表明該接收機能夠達到系統指標要求。
  9. Therein, microprocessor temperature compensation crystal oscillator ( mtcxo ) is a comparatively new - type digital compensated crystal oscillator

    在tcxo中，微處理機溫度補償晶體振蕩器（ mtcxo ）是一種比較新型的數字式溫度補償晶體振蕩器。
  10. Comparing with digital temperature compensated crystal oscillator ( dtcxo ), the mcxo introduced in this paper has many advantages as follows, simple in structure, small in size, low in power, low in price and short in startup time

    與數字溫度補償晶體振蕩器（ dtcxo ）相比，本文所敘述的微機補償晶體振蕩器具有體積小，造價低，功耗小等優勢。加上有開發系統用於開發生產，使其更具有市場競爭力。
  11. A full - digital demodulation technique is introduced in this paper, which can make it easy and quick to design and achieve binary phase shift keying ( bpsk ) demodulator, and also can reduce the requirement of the oscillator frequency precision and the degree of stability of the receiver

    本文介紹了一種適合於用數字信號處理器（ dsp ）實現的全數字解調技術。該技術能方便、靈活地設計實現二進制相移鍵控（ bpsk ）解調器，而且使用該技術可以大大降低對接收機本身的振蕩頻率精度和穩定度的要求。
  12. 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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