頻帶范圍 的英文怎麼說

中文拼音 [bīndàifànwéi]
頻帶范圍 英文
band range
  • 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...
  • 范 : 名詞1 [書面語] （模子） pattern; mould; matrix 2 （模範; 榜樣） model; example 3 （范圍） boundar...
  • 圍 : Ⅰ動詞1 （四周攔擋起來 使裡外不通; 環繞） enclose; surround; corral 2 （繞; 裹） wrap Ⅱ名詞1 （四...
  • 范圍 : scope; limits; extent; boundary; confines; range; range dimension; spectrum
  1. There is a great deal of demand in modern electronics, however, for bandpass amplifiers.

    然而近代電子學對調諧的頻率范圍很寬的帶通放大器提出很多要求。
  2. Channel band ranges

    通道頻帶范圍
  3. We use the term bandwidth to represent such a frequency range.

    我們用頻帶寬度這個詞來代表這樣的頻率范圍。
  4. Used the identification of bandwidth point, a first - order - plus - dead - time model can be available. meanwhile a 4 - parameter model can be obtained with the two points. with the model available, the two - degree - of - freedom pid controller is designed based on the iae specification and a robustness specification

    並利用臨界點的辨識與帶寬點的辨識建立二階純延遲模型，從nyquist圖可以看出，模型在對參數整定關鍵的一段頻率范圍內都能較好的擬和原對象。
  5. Female courtship signal of the brown planthopper was made of many continuous regular pulses and male ' s signal was made of similar syllabics and had two types with different time domain characteristics. second male vibrational signal differed from male courtship signal with wide spectrum range and regular syllabics frequency. time domain characteristics of signals in different individuals even the same individual were different

    頻域特徵分析知，褐飛虱雌蟲求偶嗚聲信號的頻域特性較穩定，個體內比個體間差異小；雄蟲求偶嗚聲信號s 、 e片段頻譜范圍較寬，但主振頻率比較接近，差異不顯著； m片段頻帶較窄，主振頻率mvf略小於s 、 e片段，變異較小； m片段脈沖重復頻率prf為幻
  6. In this paper, for 2 ~ 2000mhz broadband rf front - end, using subsection processing fixed intermediate frequency superheterodyne architecture, and combining with the actual component ’ s level, a broadband rf front - end system simulation platform is presented, which provided the universal, standardization, and modularization of transmitter and receiver

    本文針對頻率范圍2 2000mhz的寬帶射頻前端，採用分段處理的固定中頻超外差結構，並結合目前的器件水平，建立了一個通用化、標準化、模塊化的寬頻帶射頻前端發射機和接收機系統模擬平臺。
  7. In the paper, the transition of ka band rectangular waveguide to micro strip probe and the back - to - back structure are designed. the measurement results indicated the low insert loss and low return loss from 35 ghz to 40 ghz

    本文設計了ka波段矩形波導到微帶探針過渡結構以及背對背結構，測試結果表明，在35 40ghz頻率范圍內，其插入損耗和回波損耗都比較小。
  8. The harmonic factor raises with the growth of volume percentage of hardening particles no mater what detecting direction is. but it is not a linear variation course. the harmonic factor mounts up slowly under the critical value but increases rapidly while exceeds the critical value

    在正、逆向檢測時，隨著強化粒子體積百分數的增加，在有效頻帶范圍內諧波系數同時單調增加，但其變化是非線性的，即在臨界值以下，諧波系數的變化趨于平緩，而超過臨界值以後，隨著強化相粒子體積百分數的增加，諧波系數快速增加。
  9. The honeycomb board impregnated absorbant can reach less reflection within wider frequency band and better mechanical performance and very little density. all these characteristics make it as an material to fabricate some parts of the aircraft

    浸漬吸收劑的蜂窩板可以在寬頻帶范圍內達到較小的反射、有很好的力學性能和很小的比重，這些特點成為製造飛行器吸波結構的最重要的材料。
  10. Receiving antennas for satellite broadcast transmissions in the 11 12 ghz band - part 1 : electrical measurements iec 61114 - 1 : 1999 ; german version en 61114 - 1 : 1999

    11 12ghz頻帶范圍內衛星廣播傳送用接收天線.第1部分
  11. Fixed radio systems - point - to - multipoint antennas - antennas for point - to - multipoint fixed radio systems in the 3 ghz to 11 ghz band v. 1. 2. 2

    固定無線電系統.點對多點天線.在3 - 11ghz頻帶范圍上運行的點對多點固定無線電系統用天線
  12. Wavelet transform is better than fourier transform in precision and credibility, and mra enables us to get the information about the frequency which we need

    模擬結果表明多解析度分解可以很容易得到我們需要的頻帶范圍的信息，並且其快速小波演算法也可以在dsp上實現。
  13. That results in good reconstructed images. so the ultrasonic transducers used to detect photoacoustic pressures should be designed and selected according to the frequency ranges of absorbers

    針對大小不同的物體應該採用不同帶寬探測器採集光聲信號或者取寬帶探測器的不同的頻帶范圍進行重建。
  14. The frequency analysis results show conclusions as follows : 1. the relative valid spectral power is declined with the volume percentage of inclusions in terms of exponent curve and the tendency of negative direction is same to that of forward direction

    當ly12鋁合金細小夾雜物（小於0 . 16mm ）的體積百分數從0 0 . 35時，在35 50mhz的頻帶范圍內，超聲波形的有效譜功率按近似指數曲線快速下降，沿相反方向檢測時其變換趨勢相同。
  15. Adsl is a new modem technology ( the bandwidth is from 25. 875k to l. lmhz ) that converts existing copper telephone lines into access paths for multimedia and high speed data communications, and maintains the regular telephone voice services. adsl provides data rates that expand the best existing access capacity ( isdn ) by a factor of 60 or more, and the best existing common analog access capacity ( v. 34 modems ) by a factor of 300, without requiring any new cabling

    它具有傳統模擬modem和isdn無可比擬的速率優越性，其接入速率是isdn的60倍，是現有模擬modem （ v . 34 ）速率的300倍，最大8mbps的下行傳輸速率和最大1mbps的上行傳輸速率，其原因是因為它使用了超過了傳統modem的頻帶范圍（ 25 . 875k到1 . 1mhz的頻帶） ，採用了先進的編碼和調制解調技術。
  16. The power driver yields output power with a gain variation less than 1. 18db and a maximum of 1. 37 - w output power within the entire band of interest. the large - signal bandwidth of this power - driver is 1. 5ghz

    在驅動級放大器的工作頻率范圍內實測的功率增益不平坦度小於1 . 18db ，獲得的最大輸出功率（ 1 . 37w ）帶寬優於1 . 5ghz 。
  17. There are many optical depletion mechanisms, such as diffraction depletion, the transimission of a reflector, scattering of the medium in the cavity, non - life absorption and so on, so the quality factor ( q factor ) is low. in

    利用這種微諧振腔製作的激光器，其自發輻射頻率落在光子晶體的禁帶范圍內，有效降低了激光振蕩的閾值，從而使激光器具有低閾值高效的特點。
  18. Specialties : the range of center frequency it can achieve is bigger than one - piece filter ; at the time it has the features of wide pass - band, low insertion loss and high restraint outside the band

    特點：可實現的中心頻率范圍較單片濾波器寬，通帶寬度范圍大，插入損耗小，帶外抑制高。
  19. At the same time, we have manufactured a transition from microstrip line to rectangle waveguide, working in full ka - band. the insert loss of a single transition is between 0. 25db and 1db

    同時，完成了ka全頻段微帶波導過渡的研製，在26 . 5 39 . 5ghz頻率范圍內，單個微帶波導過渡的插損在0 . 25 1db
  20. This paper studies the design methods and techniques of the broadband lna. using negative feedback techniques and lossy match method, a broadband lna acceptable for sdr is presented. the measured results showed that over 30mhz ~ 3000mhz, the lna achieved a maximum noise figure of 2. 0db, a power gain of 22db with gain flatness of less than 2. 0db

    本文最後對寬帶低噪聲放大器的設計方法進行了詳細探討，並運用負反饋技術和有損匹配的方法，研製了一種適合軟體無線電應用的寬帶低噪聲放大器，經測試，在30 3000mhz頻率范圍內，噪聲系數nf 2 . 0db ，增益g = 22db 2 . 0db 。
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