頻段 的英文怎麼說

中文拼音 [bīnduàn]
頻段 英文
frequency range; frequency channel
  • 頻 : Ⅰ形容詞（次數多） frequent Ⅱ副詞（屢次） frequently; repeatedly Ⅲ名詞1 [物理學] （物體每秒鐘振動...
  • 段 : Ⅰ量詞（部分） section; segment; part; paragraph; passage Ⅱ名詞（姓氏） a surname
  1. Digital cellular system at 1800mhz dcs

    頻段的數字蜂窩系統
  2. In the ehf band mixer design the crossbar mixer type was used

    Ehf頻段混頻器採用crossbar的混頻電路形式。
  3. Propagation characteristics of the pc3 frequency range pulsation in the cusp latitudes

    3頻段脈動的傳播特性
  4. Besides the more obvious broadcast, emergency and mobile radio services there are cellular and cordless telephones, radar, garage door openers and other remote controls, telemetry, and amateur and cb radio

    無線電頻譜除了廣播頻段，應急通信頻段和移動通信頻段以外，還包括蜂窩電話、無繩電話、雷達、遙控器、無線電愛好者和民用頻段。
  5. Based on those and the practical needs of some projects, the thesis mainly focuses on two different kind millimeter mixers : a ka band mixer and an ehf band mixer

    根據以上分析和應用項目的實際需要，最後本文集中於對兩種混頻器的研製：一種ehf頻段混頻器；一種ka頻段混頻器。
  6. Light visible to human eyes however occupies only a very narrow band in the whole electromagnetic spectrum

    然而，人眼可見的光在整個光譜中只佔一個非常狹窄的頻段。
  7. The brief name ring, measures a device right high, inside, low and each segment scope for ability for even emersion of signal, pointing lowestly validity returning putting the frequency with tallestly validity returning put of the frequencying. request towards device rang contain both side, on is a scoping as far as possible breadth, can be namely frequency bottom that replay the is as far as possible low, and the upper limit is as far as possible high ; two is a frequency scope the inside is at all point to respond to as far as possible flat, avoided to appeared the big motion

    簡稱頻響，衡量一件器材對高中低各頻段信號均勻再現的能力，指最低有效回放頻率與最高有效回放頻率之間的范圍。對器材頻響的要求有兩方面，一是范圍盡量寬，即能夠重播的頻率下限盡量低，上限盡量高二是頻率范圍內各點的響應盡量平坦，避免出現過大的波動。
  8. Above all, the system fuse the eradiate noise ' s different sides " feature and offer strong elements for the next process : classifying. it is very important to study the classifier in this dissertation

    其中線譜特徵反映了船舶輻射噪聲的頻域信息，能量特徵綜合了不同頻段內的信息，而分維特徵反映了信號的時域的信息。
  9. Through the inspecting, the author selected three methods of eradiate noise ' s feature extraction. the methods include the pedigree, e - filter, fractal. in those methods, the pedigree is based on frequency field, the e - filter is based on the energy field and the fractal is based on time field

    本文作者經過考察，採用了三種前期研究中較為有效的水下目標特徵提取方法? ?基於功率譜估計的線譜特徵提取方法、基於小波分析的不同頻段內能量特徵提取方法和基於水聲信號分維特性的特徵提取方法。
  10. Mixers are the key components of many microwave and millimeter - wave systems. the super - heterodyne receiver is always applied in modern communication system, mixer becomes the key component as is at the first part of system. but it is more and more difficult to get the choiceness lo source of the same band with the system is working at high frequency especially in the millimeter - wave. sub - harmonic mixer is a good solution to this problem now. in this circuit we need just half 、 quarter 、 even 1 / 8 of the rf signal frequency. in this paper the design and fabricate of sub - harmonic hmic mixers ( 2, 4 ) at w - band are introduced

    混頻器是微波通信、射電天文學、雷達、等離子物理、遙控、遙感、電子對抗，以及許多微波測量系統中至關重要的部件。在現代通信系統中，毫米波頻段通常採用超外差接收機，混頻器作為第一級就成為關鍵部件。由於在毫米波頻段，同頻段高性能的本振源成本高，技術難度大，採用分諧波混頻技術是解決此問題的有效途徑，只需射頻頻率1 / 2 、 1 / 4甚至1 / 8的本振頻率即可實現混頻。
  11. Binary linear ( vertical and horizontal ) polarization is used by all chinese communication satellites, and binary circular ( right - hand and left - hand ) polarization is often used by some intelsat and some russian satellites in c - band

    中國通信衛星都採用由垂直極化和水平極化構成的雙線極化頻率復用方式，國際衛星組織和俄羅斯的一些c頻段衛星則採用由左旋極化和右旋極化構成的雙圓極化頻率復用方式。
  12. After elaborating the principle of an 802. lib key modulation scheme - complementary code keying ( cck ), this paper proposes and realizes a hardware circuit solution of 802. 11b pcmcia wlan interface card, which can reliably offer a maximal 11mbps data rate and freely switch within 14 working channels in 2. 4ghz frequency band

    接著在詳細闡述了802 . 11b協議核心調制技術?互補碼鍵控（ cck ）的原理的基礎上，本文提出並實現了一種峰值傳輸速率為11mbps的802 . 11bpcmcia高速無線網卡的硬體電路設計方案，在2 . 4ghz頻段該網卡可在14個工作通道上自動切換，實現高速突發數據的可靠傳輸。
  13. The interaction between atoms and photons has been investigated comprehensively by cavity quantum electronics - dynamic ( cavity qed ) in the last decades. with the manipulation of atoms developed by laser cooling and trapping and improvement of high finesses cavity with ultra - low losses, the interaction between atoms and photons has reached what is called strong - coupling range in optical domain

    從上世紀90年代發展起來的腔量子電動力學（ cqed ）從根本上揭示了光與原子的相互作用，光頻段腔qed對認識原子與光場的作用至關重要：隨著冷原子技術與高品質光學腔的發展，原子與光子的相互作用達到強耦合。
  14. It will also be necessary to free up radio spectrum now used for military and satellite communications

    同樣地，也有必要開放目前用於軍事和衛星通訊的無線電頻段。
  15. It ' s got am, fm, shortwave, longwave, ssb and aircraft band frequencies

    它的獲得時，調頻，短波，長波， ssb及飛機頻段頻率。
  16. Two high q bandpass filters at millimeter wave band based on substrate integrated waveguide ( siw ) and low temperature co - fired ceramics ( ltcc ) are designed in this thesis, and one is realized

    本文主要講述了基於介質集成波導（ siw ）技術和ltcc工藝的毫米波頻段高q濾波器的研製。
  17. A doctor can find different spectrum distribution at each time segment, and can also look over frequency field corresponding time domain information

    醫生可以查找任一時段的不同譜峰分佈，也可以查看任一頻段對應的時域情況。
  18. Design and implementation of a c - band frequency synthesizer

    頻段頻率合成器的設計與實現
  19. While simulating the resonant circuits, we finished a microstrip resonance, which has high q - factor and fits to design w - band low phase noise oscillators. select beam lead hyperabrupt junction varactor and gunn die made in china as vco ’ s frequency turning component and minus resistance

    此外，文中還對w頻段微帶結構直流偏置網路、微帶波導過渡等外圍電路進行了模擬優化，設計方法和結論對毫米波微帶電路設計具有通用的參考價值。
  20. Those spectrums with few bids would likely use the " blind " bidding process

    那些很少報價的頻段極有可能會採取黑箱式的競拍過程。
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