電小天線 的英文怎麼說

中文拼音 [diànxiǎotiānxiàn]
電小天線 英文
electronically small antenna
  • 電 : Ⅰ名詞1 （有電荷存在和電荷變化的現象） electricity 2 （電報） telegram; cable Ⅱ動詞1 （觸電） give...
  • 小 : Ⅰ形容詞1 （體積、面積、數量、強度等不大） small; little; petty; minor 2 （年紀小的; 年幼的） youn...
  • 線 : 名詞1 （用絲、棉、金屬等製成的細長的東西） thread; string; wire 2 [數學] （一個點任意移動所構成的...
  1. Above this 34 - m antenna, called dss - 13, is one of those large dishes of the deep space network in goldstone, california and is primarily used for receiving echoes reflected from asteroids when they are beamed by groundbased radio signals

    圖上這座口徑34米的天線，編號dss - 13 ，隸屬美國加州的深空網路。當天文學家從地面向小行星發射無線電波時，小行星會把部分電波反射回地球，並由dss - 13所接收。
  2. Above ) this 34 - m antenna, called dss - 13, is one of those large dishes of the deep space network in goldstone, california and is primarily used for receiving echoes reflected from asteroids when they are beamed by groundbased radio signals

    （圖上）這座口徑34米的天線，編號dss - 13 ，隸屬美國加州的深空網路。當天文學家從地面向小行星發射無線電波時，小行星會把部分電波反射回地球，並由dss - 13所接收。
  3. The circular monopole antenna is a kind of miniaturized and easy - feed ultra - wideband antenna

    本課題所研究的圓盤單極天線是一種小型化、饋電簡單的超寬帶天線。
  4. The core adopts cr20ni80 which is covered by silicon rubber insulation material. there also is heat conducting media outside of heating line with life time of over 1200h according to qb t1296 - 91electric heater for fridge 5. 12. 3, heating cable should bear 1. 15 times of the input voltage and 50 day continue life test

    使用壽命可連續達到1 200小時以上根據qbt 1 29691家用電冰箱用電熱線5 ， 123 ，電熱線應能承受額定輸入電壓的115倍，連續通電50天的壽命試驗。
  5. Then we introduce the character of the atmosphere channel, which we emphasized on the atmosphere scatter, absorption and scintillation ' s effect on the laser beam. in chapter, we explain why we used cassegrain telescope to collect the optical signal at first, then the lightsource, detector, front amplifier used in optical communication has been compared to that of fiber communication, the noise including shot noise, thermal noise and background light noise has been explained here for analysis the snr and ber in the next section

    在第三章介紹無線光接入系統的光收發單元，採用多孔徑卡塞格倫式的收發天線對消除減小大氣湍流影響有較大作用，針對大氣通道的特點無線光系統收發單元在光源、光探測器、前置放大電路上存在許多有別于光纖通信的技術，同時還闡述了光接收機包括背景噪聲的噪聲機制和接收靈敏度、誤碼率等指標，最後給出了一個整個傳送鏈路的功率預算。
  6. The antenna design is based on using capacitive loads and slits on two crossed narrow patches with via fed - through feed system, which can reduce the size of the antenna, improve the isolation between two ports and keep considerable bandwidth respectively

    通過電容性加載減小整個天線的尺寸，通過在天線上開槽來增加天線埠之間的隔離度，採用viafed - through的饋電方式。
  7. The antenna can provide high isolation and low return loss in a compact space with simple fabrication, no needing complex feed network

    整個兩埠天線結構在滿足回波損耗小和高隔離度的同時，還具有緊湊、不需要復雜饋電網路、製作簡單的特點。
  8. A hybrid method which combines the mom with the method of wavelet is used to calculate the current distributions along a wire antenna

    將小波變換引入矩量法，得到求解線天線電流分佈的一般方法，比普通的矩量法減少了計算量。
  9. Some novel electrically small antennas and wide band antennas such as hybrid loaded monopole, open - circuited transmission line loaded antenna and wire - taper antenna are designed according to these effective technologies found before

    設計了混合加載線天線、頂部套筒電小天線、線錐天線等幾種新型的小型化天線和寬帶化天線結構。
  10. Due to restriction with the array aperture transition time, traditional phased array radar works under relative narrow signal bandwidth, so this restricts the application of phased array radar in the field where high performance is demanded. however, optically controlled phased array radar ( ocpar ) adopts the photoelectron technology, counteracts the aperture transition time via the method of optical true time delay ( ottd ), so it can realize wide instantaneous bandwidth and squint - free operation ; meanwhile, it can realize the miniaturization of phased array radar and has super anti - electromagnetism interference capability

    而光控相控陣雷達採用光電子技術，通過光實時延遲的方法來抵消孔徑渡越時間，可以實現相控陣雷達的寬帶寬角掃描;同時也可以使得相控陣雷達小型化，並具有強的抗電磁干擾的能力;另外，由於光纖傳輸具有損耗低、頻帶寬等固有優點，採用光纖連接雷達天線和雷達控制中心，可以使兩者的距離較採用同軸電纜有較大的提高，更有利於保護雷達控制中心。
  11. Many technologies of electrically small antennas and wide band antennas are discussed in theory, simulation and experiment. and some novel electrically small or wide band antennas are proposed. the loaded monopole is analyzed in depth integrating the genetic algorithm ( ga ) with the method of moments ( mom ) in order to increase the gain and decrease the vswr of antennas used at hf / vhf band

    在本論文的研究過程中，通過合理利用各種現有的天線寬帶化和小型化的理論成果、有效的綜合各種技術措施，運用矩量法和遺傳優化演算法等數值方法，深入研究了加載單極子天線問題，旨在全面提高高頻/甚高頻頻段內的天線增益和降低電壓駐波比，以獲得較高增益的、基本滿足駐波要求的小型超寬帶天線。
  12. Based on the previous theory, the fdtd method is used to analyze practical antennas, which include dipole antenna, microstrip antenna, log - periodic antenna and broadband resistance loaded monopoles. the particular problems that occur in the calculating of vary type antennas are discussed. the cross - section field of microstrip line and two - conductor line are analyzed, and the effect on the numerical result arising from the incident cross - section mesh size is discussed

    在前面理論的基礎上，將fdtd用於振子天線、微帶天線、對數周期天線、電阻加載振子天線等各種天線的計算中，對各種不同類型天線計算中所遇到的特殊問題進行了詳細的討論，並分析各種開放場傳輸線如微帶線、平行雙線等橫向場分佈，討論了入射網格橫向截斷區域的大小對計算結果的影響。
  13. There are a good many actual significances for the miniaturization of microstrip antennas in the fields of modern communication, navigation, orientation, and electronic countermeasure, etc. the research and exploitation of compact antennas with high performance are becoming one of the hotspots in the antenna field

    微帶天線的小型化已成為現代通信、導航、定位、電子對抗等領域的研究熱點之一。目前，國內外研究者已經提出了很多關于微帶天線的小型化的實現方法，包括採用特殊材料、特殊結構或附加有源網路等。
  14. The simulated results show that we can improve the sensitivity by setting the optical bias at / 2, reducing the gap of electrode, increasing the overlap integral factor, reducing the insert lose, adopting suitable segmentation number, increasing the electrode length, increasing the optical power, reducing the wavelength and the relative intensity noise and reducing the receive bandwidth ; obtain the wider bandwidth utilizing reducing the electrode length and the capacitance of modulator, segmentation the electrode ; increase the dynamic range using lowering noise, increasing the optical power at the detector and lower optical bias

    通過計算得知，使傳感器相位偏置為/ 2 ，減小電極間距，提高電光重疊因子，減小器件插入損耗，採用合適的分段數，增加電極長度，增大光功率，降低激光的波長，減小相對強度噪聲，減小接收帶寬，對提高靈敏度的效果是非常明顯的。而減小天線長度，降低調制器電容，電極分段，都可以獲取較大的帶寬。降低系統噪聲;增加到達探測器的光功率，採用較低的光學偏置，都可以增大線性動態范圍。
  15. The joining device of 7 / 16 ( l29 ) type has whorl to join the organization, its characteristic is the power, the capacity is large, voltage little to stay bob, three steps it pays to be superior to transfer performance, kind airtight have, suitable for radio, tv aerial system, jump line join and microwave communication system present cable connection spend mainly

    型連接器具有螺紋連接機構，其特點是功率、容量大，電壓駐波比小，三階交調性能優越，氣密性好，可供廣播、電視天線系統、跳線連接以及微波通訊系統主饋電纜連接用。
  16. Electronically small antenna

    電小天線
  17. According to the particularity of the hfsw oht by ship, we have done research on a special electrically small antenna, crossed - field - antenna ( cfa )

    由於高頻地波艦載超視距雷達對天線有小型化、適裝性等各方面的特殊要求，我們對新型電小天線?交叉場天線cfa （ crossedfieldantenna ）進行研究。
  18. Moreover, the matching circuit of electrically small antennas using transmission line is studied in this dissertation. a model is presented. and some theory analyses and the measure result are given

    另外，論文中對電小天線的傳輸線匹配模型進行了初步的探討，給出了一種傳輸線匹配電路的形式，以及理論的分析和實驗結果。
  19. At this background, the miniature and wide band technology of antenna become more and more important. this dissertation mainly researches the ultra - wide band communication antennas and electrically small antennas

    本論文研究的主要內容是天線的寬帶化和小型化技術，對超寬帶電小天線的分析方法、寬帶化、小型化等關鍵技術以及實際天線的研製等方面進行了一些探索。
  20. This dissertation is mainly focused on the key technologies of smart antenna for mobile station : ( 1 ) the electrically small antennas with two ports, ( 2 ) the performance evaluation of smart antenna for mobile station, and ( 3 ) the retrodirective antenna with multi - feed ports

    本文的工作主要圍繞移動臺智能天線的關鍵技術進行，包括三方面研究內容： （ 1 ）適用於移動臺的兩埠電小天線； （ 2 ）移動臺智能天線的性能評估； （ 3 ）多饋電一體化方向回溯天線。
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