調幅度測試器 的英文怎麼說

中文拼音 [diàoshì]
調幅度測試器 英文
percentage modulation meter
  • 調 : Ⅰ動詞1 (配合得均勻合適) harmonize; suit well; fit in perfectly 2 (使配合得均勻合適) mix; adju...
  • : Ⅰ名詞1. (布帛、呢絨等的寬度) width of cloth 2. (泛指寬度) width; size 3. (姓氏) a surname Ⅱ量詞(用於布帛、呢絨、圖畫等)
  • : 度動詞[書面語] (推測; 估計) surmise; estimate
  • : 動詞1. (測量) survey; fathom; measure 2. (測度; 推測) conjecture; infer
  • : 名詞(古代占卜用的器具) astrolabe
  • : 名詞1. (器具) implement; utensil; ware 2. (器官) organ 3. (度量; 才能) capacity; talent 4. (姓氏) a surname
  • 幅度 : range; scope; extent; [古詞] latitude; breadth; [數學] argument; [電學] amplitude
  • 測試 : test; testing; checkout; measurement
  1. Static and dynamic trial experiments indicate that the system, not only can well simulate the prime governor and self _ equilibrium characteristics of a prime mover with its simple hardware line, small size and versatility, but also can highly improve the whole system ' s control precision, reliability and stability when compared with the system design of the analogy circuits

    靜態、動態實驗表明:該控制系統,不僅硬體線路大為簡化、體積小、通用性強,能夠很好地實現對原型調及原動機自平衡特性的模擬,而且與模擬電路的設計方案相比,整個系統的控制精、可靠性和穩定性等大提高,具有明顯的優勢。
  2. The carrier wave is modulated directly by the baseband signal at several frequency point in l band and s band. firstly, this paper clarifies the theory of i / q modulation, elaborates evm and acpl, and analyzes the effect of amplitude and phase unbalance and dc offset on evm. secondly we review the basic principle of phase locked loop and it ’ s composing parts, including the basic conception and design method of pll frequency synthesizer, especially introduce the charge pump pll frequency synthesizer in detail

    首先,在闡述i / q正交調制基本原理的基礎上,通過對誤差矢量和鄰近通道功率泄漏的詳細分析,定性、定量地討論了各種非理想電路因素(如相位不平衡、不平衡、直流偏差等)對調性能的影響;其次,介紹了鎖相環的工作原理和基本組成部分,包括鎖相環的設計和環路濾波的設計,特別詳述了電荷泵鎖相頻率源;第三,介紹了採用直接調制技術模擬衛星信號的射頻前端的設計;最後,對整個直接射頻調制系統進行,結果基本上達到了課題要求。
  3. This paper uses an optically modulated scatterer system to measure microwave field with minimal disturbance. this method is especially adapt to measure magnitude and phase of microwave field close to conductor and microwave field with complex path between source and field. so it can be used to measure radiation antenna ’ s near - field and microwave into slots

    調制散射量方法最大限地減少了量裝置對被場的擾動,特別適合於量導體附近和具有復雜路徑場的值和相位分佈,可以用於對輻射天線近場的以及孔縫耦合中場的量,可為天線的設計,微波孔縫耦合效應的研究提供較精確的實驗數據。
  4. Vector modulators have been used in this paper to vary the phase and amplitude of signals in the in - band spurious cancellation loop of feed - forward power amplifiers ( ffpa ). in the two - tone test, 3. 5ghz ffpa developed in this paper shows more than 35db improvement in the third - order inter - modulation ( im3 ), offers approximately - 60dbc im3 output, achieves the expected goal, and meets the communication requirement

    本文研製的3 . 5ghz前饋放大採用了矢量調來實現前饋環路的和相位調節,在雙音結果中,三階交調im3的改善超過了35db ,前饋系統輸出im3抑制近- 60dbc ,達到了預期指標,滿足了通信需要。
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