放射頻帶 的英文怎麼說

中文拼音 [fàngshèbīndài]
放射頻帶 英文
emission band
  • 放 : releaseset freelet go
  • 射 : Ⅰ動詞1 （用推力或彈力送出） shoot; fire 2 （液體受到壓力迅速擠出） discharge in a jet 3 （放出） ...
  • 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...
  1. From some characteristics observed, such as the short lift time, narrow frequency band, fast frequency drift, quasi - periodic pulsation, spike event and complex magnetic structure, it is considered that the radiation mechanism of these events may be principally due to the electromagnetic waves magnified directly by the instable electronic cyclotron

    從它們的觀測特徵：短壽命，窄頻帶，頻率快速漂移，及尖峰事件與磁結構復雜的大黑子活動區密切相關等，認為這些事件的輻射機制可能是電子迴旋脈澤不穩定直接放大電磁波所致。
  2. The amplifier request band width, to adapt radiation pulse randomness and its extremely quick front

    放大器要求頻帶寬，以適應輻射脈沖的隨機性和其極快的前沿。
  3. And some useful rules are concluded from these experiments. the pd signals on different frequency scopes are surveyed, and the thesis explores anti - noise narrowband detection of partial discharge signals. for the first time the thesis brings forward the choosing - frequency detection of pd ground on the radio frequency communication

    同時，進行了局部放電不同頻段信號檢測，為窄帶抗干擾檢測技術奠定基礎，並首次提出基於射頻通訊原理的選頻檢測原理及檢測設想；在實驗室中進行了局部放電超高頻信號的檢測，驗證了超高頻法檢測局放信號時對空間電暈干擾的抑制作用。
  4. The event gave us a good opportunity to discuss the processes of magnetic change, energy release and particle acceleration in the corona during the preflare, especially using decimetric and microwave fine structure data. in this thesis, we report the solar type iv bursts and its associated fiber fine structures recorded on 14 july 2000

    中國國家天文臺懷柔觀測站的寬帶頻譜射電望遠鏡，觀測到了來自內日冕區的射電爆發及其精細結構，攜帶著耀斑爆發初期磁場變化、能量釋放的豐富信息，很有必要對其進行深入的理論分析和計算。
  5. At the operating voltage and current less than rated values, the amplifier provides a maximum of 5. 94 - w ( continuous wave ) output power when driven into saturation. the average combining efficiency over the operating band was estimated at 82 %. the maximum combining - efficiency and the overall power - added efficiency ( pae ) is 87 % and 13. 6 %, respectively

    該功率合成放大器在低於mmics功率單片額定工作值的情況下獲得了1 . 7ghz帶寬的最大飽和輸出功率5 . 94w （連續波） ;整個帶內合成效率估計平均為82 % ，最大合成效率達87 % ，功率相加效率（ pae ）約為13 . 6 % ;若電源達到mmics單片的額定值，估計最大輸出射頻功率將會達到7w 。
  6. According to the principle of correlation detection, an automatic measurement system for extinction ratio of polarizer consisted of monochromator and dsp lock - in amplifier and compurer is designed not only to eliminate the influence on measurement accuracy caused by drift of intensity of light source but also to obatain approximate extinction spectrum

    摘要基於相干檢測原理設計了一套由單色儀、數字鎖相放大器和計算機聯合使用的透射式偏光鏡消光比智能化測試實驗系統，採用雙頻雙光路分光單探測器接收鎖相放大器分離信號比對法進行源補償測量，克服了光源光強漂移所帶來的影響；實現了可見光區消光比的精確自動測量，而且可以測得近似的消光光譜。
  7. Abstract : this paper describes the thermal effects of a coaxial rf - excitedco2 laser ， based on the balance equations of electron density and energy ， current continuity equation ， and heat conduction equation. depende ncies of the spatial distributions of gas temperature on some discharge parameters arediscussed

    文摘:通過求解放電等離子體中的帶電粒子密度和能量的平衡方程、電流連續性方程以及熱傳導方程，研究了同軸射頻（ rf ）激勵co2激光器中放電混合氣體的溫度效應，分析了有關放電參數對溫度分佈的影響。
  8. As far as linearity and efficiency are concerned, several techniques and theoretical analyses on linearity are extensively demonstrated. hybrid use of linear techniques and adaptation technologies in sdr are fully studied so that it can provides amplify with broadband, high efficiency and linearity. the paper presents a new scheme of an adaptive feedforward correction connected with a predistorter to amplify in sdr

    在高效線性放大方面，廣泛討論了射頻功放的幾種線性化技術和非線性理論分析基礎，深入研究了在軟體無線電中組合使用線性化技術和自適應技術以保證寬帶、高效率的線性放大，創新地提出了基於軟體無線電寬帶線性射頻放大的預失真和自適應前饋線性技術結合的方案。
  9. Built - in patterns with writing stop, level rotation, zoom, roll, smooth movement, dot drawing, slow drawing, 3d cartoon, strobe and dimmer laser performing effect. housing : high temperature resistant plastic covering, epoxy paint finish

    內置圖案，帶斷筆，水平旋轉，縮放，水平移動，描點， 3d卡通，頻閃，調光等鐳射效果。
  10. The radio frequency receiver supports interface for instrument and base station and air interface for mobile station, and it takes the task of magnifying low noise and down - convert and digital baseband processor filtering and magnifying intermediate frequency to reverse link signal. the digital baseband processor samples the received signal after down - convert radio frequency signal to intermediate frequency signal and processes other processing and supports interfaces to computer, next sends data to computer. the gps receiver supports interface for instrument and gps system, and receives gps system signal, next it demodulates the correlative information and sends out benchmark clock signal we need

    射頻接收部分主要為儀器和基站、移動臺提供空中介面，其主要任務是在反向鏈路上對接收到的射頻調制信號進行低噪聲放大、射頻下變頻變換、中頻濾波放大等;數字基帶部分為對接收信號變頻為中頻后進行a / d采樣，以及其他的rsp處理並和計算機提供介面，將數據送至計算機進行后臺處理、顯示等; gps接收機部分為儀器和gps系統提供介面，接收gps系統信號並解調相關信息，輸出所需的電文及時鐘基準信息等。
  11. In view of the importance of rf front - end circuits in the receiver system, the paper finally is focused on the analysis and design of the rf front - end circuits, including the design of low noise amplifier ( lna ), microstrip filter and balanced mixer. all the circuits above are simulated individually using ansoft serenade, and the results are satisfying with the desired performance

    考慮到射頻前端電路性能的好壞會直接影響到整機的性能，文中還重點論述了該接收機射頻前端電路的分析和設計，主要包括低噪聲放大器、微帶濾波器和單平衡混頻器的理論分析和實際設計，並在ansoftserenade環境下進行了模擬模擬，模擬結果符合設計要求。
  12. Integrated circuits - measurement of electromagnetic emissions, 150 khz to 1 ghz - measurement of radiated emissions - tem cell and wideband tem cell method

    集成電路. 150khz至1ghz電磁輻射的測量.輻射釋放測量. tem輻射室和寬頻帶tem輻射室法
  13. As a key component of rf front - end, broadband low noise amplifier ( lna ) becomes important in the sdr receiver

    寬帶低噪聲放大器作為接收機射頻前端的關鍵部件之一，在軟體無線電中起著重要的作用。
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