相鄰通道頻率 的英文怎麼說

中文拼音 [xiānglīntōngdàobīn]
相鄰通道頻率 英文
adjacent channel frequency
  • : 相Ⅰ名詞1 (相貌; 外貌) looks; appearance 2 (坐、立等的姿態) bearing; posture 3 [物理學] (相位...
  • : 通量詞(用於動作)
  • : Ⅰ名詞(道路) road; way; route; path 2 (水流通過的途徑) channel; course 3 (方向; 方法; 道理) ...
  • : 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...
  • : 率名詞(比值) rate; ratio; proportion
  • 相鄰 : adjoin; adjoining; adjacent
  • 通道 : thoroughfare; passageway; pass; enterclose; gallery; drong; tunnel; avenue; alure; way; row; key ...
  • 頻率 : frequency; rate
  1. 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,過對誤差矢量和泄漏的詳細分析,定性、定量地討論了各種非理想電路因素(如位不平衡、幅度不平衡、直流偏差等)對調制器性能的影響;其次,介紹了鎖環的工作原理和基本組成部分,包括鎖環的設計和環路濾波器的設計,特別詳述了電荷泵鎖源;第三,介紹了採用直接調制技術模擬衛星信號的射前端的設計;最後,對整個直接射調制系統進行測試,結果基本上達到了課題要求。
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