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digital frequency synthesizer中文什么意思

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用"digital frequency synthesizer"造句

數字頻率合成器
數字頻率綜合器
數字式頻率合成器

digital: adj. 1.手指的；指狀的。 2.數字的，數據的。 n ...
frequency: n. 1.屢次，頻仍，頻繁。 2.(脈搏等的)次數，出現 ...
synthesizer: n. 合成者，合成物；〔尤指〕【電學】合成器，綜合器。
dfs digital frequency synthesizer: 數位頻率合成器; 數字頻率合成器
direct digital frequency synthesizer: 直接式數字頻率合成器

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Dfs digital frequency synthesizer
數字頻率合成器
Study on direct digital frequency synthesizer technology based on piecewise pperation
基于分段運算的直接頻率合成技術研究
At first , this paper described the basic structure , working principle , sources of spurious signals and characteristics of output spectrum , of direct digital frequency synthesizer ( dds )
首先分析直接數字頻率合成器( dds )的基本結構、工作原理、雜散來源、輸出頻譜特性。
Direct digital frequency synthesizer ( dds ) is an apparatus to generate wave on the required frequency . it provides high frequency resolution , rapid frequency transforma - tion and other superiority
直接數字頻率合成器是現代頻率合成的主要工具,它有頻率分辨率高,頻率轉化快等眾多優點。
Then according to the emphasis of the design , went deeply into the theory of pll frequency synthesizers widely used , described pll ’ s working principle , structure and several types in detail , and made research and analysis of pll frequency synthesizers ’ phase noise , including the effect of the active loop filter on the phase noise , and give some methods to make improvement as well , such as changing loop filter form , reducing divide number , and increase phase detector frequency , etc . then paper introduced the principle character and phase noise analysis of direct digital frequency synthesizer ( dds ) and injection phase lock circuit , which are also important circuits in the design
論文首先對幾十年頻率合成器的發展進行概述,而后針對本次設計的重點,對應用較為廣泛的鎖相頻率合成理論進行了深入的探討,詳細介紹了鎖相環的工作原理、組成結構和鎖相類型,并對鎖相頻率合成器的相噪特性進行了研究分析,包括有源環路濾波器對于相噪的影響,提出了改善相位噪聲的幾點措施:改善環路形式、降低分頻數、增大鑒相頻率等。接著介紹了直接數字頻率合成器( dds )和注入鎖相電路的原理特點以及相噪分析,它們也是本次設計的重要電路。