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- Direct Digital Frequency Synthesis(DDS) technique is introduced and its spurious error is mainly studied. 介紹了直接數字頻率合成技術(shù)以及分析其雜散誤差,對相位截斷誤差和幅度量化誤差進(jìn)行了傅立葉級數分析研究。
- If no frequency synthesis is needed, the DLLs are preferred for the purpose of synchronization. 如果頻率合成非必要的需求，在處理同步問(wèn)題時(shí)，延遲鎖相迴路是較佳的選擇。
- DDS hybrid PLL can take good advantage of both their merit, have become an important area of frequency synthesis. PLL混合頻率合成技術(shù)能綜合兩者的優(yōu)點(diǎn),已成為現今頻率合成領(lǐng)域的重要研究方向。
- The technology of direct digital frequency synthesis(DDS),is a new typed synthesizer technology and signal frequency methods. 直接數字頻率合成技術(shù),即DDS,是一種新型的頻率合成技術(shù)和信號產(chǎn)生方法。
- Direct Digital Frequency Synthesis(DDS) technology is realized on complex programmable logical component(CPLD) with hardware description language. 在復雜可編程邏輯器件(CPLD)上,用硬件語(yǔ)言實(shí)現了直接數字頻率合成(DDS)技術(shù)。
- A UHF instrument which adopted frequency synthesis method used in exploring the partial discharge (PD) in GISs is introduced. 文中介紹一種采用頻率合成技術(shù)對GIS腔體內放電所產(chǎn)生的甚高頻響應進(jìn)行檢測的UHF測量設備。
- Could versus signal passing programme came realize frequency demultiplication, could realize precise frequency synthesis output. 可以對信號通過(guò)編程來(lái)實(shí)現分頻，從而可以實(shí)現精確的頻率合成輸出。
- indirect frequency conversion circuit 間接變頻電路
- Digital look-up table method for synthesizing periodic signals is the most popular technique for direct digital frequency synthesis. 數字查表法合成周期信號是一種最常用的直接數字頻率合成技術(shù)。
- B.G.Goldberg, “Analog and Digital Fractional-N PLL frequency Synthesis: A Survey and Update”, Applied Microwave &Wireless, JUN 1999. 葉家毅;“微波分數頻率合成器之研制與應用”;國立中正大學(xué)電機工程研究所碩士論文;2000.
- The direct digital frequency synthesizes (DDS) to take one kind of new frequency synthesis technology, May realize from the signal parameter to the waveform transformation. 直接數字式頻率合成(DDS)作為一種新的頻率合成技術(shù),它可以實(shí)現從信號參數到信號波形的轉換。
- This paper introduces an improved direct digital frequency synthesis(DDFS) realization method based on CORDIC arithmetic,applying CORDIC arithmetic to substitute large SIN ROM to export fine frequency resolution. 提出了一種基于CORDIC算法的改進(jìn)直接數字頻率合成(DDFS)的實(shí)現方法,應用CORDIC算法替代了龐大的傳統正弦函數ROM,輸出高質(zhì)量的信號。
- His indirect way of telling me to leave annoyed me. 他那種不直截了當地讓我離開(kāi)的方式激怒了我。
- Basing on the discussion of principle and characteristic of direct digital frequency synthesis(DDS) and phase-locked loop frequency synthesis(PLL),a design scheme of frequency synthesizer combining direct digital synthesis used for modern radio is given. 介紹了DDS(直接數字頻率合成)技術(shù)及PLL(鎖相環(huán))頻率合成技術(shù)的工作原理及特點(diǎn),給出了現代電臺設計中基于DDS的頻率合成器的設計方案。
- Introduced the DDS basic principle as well as DDS the chip AD9852 structure, the characteristic, and have given based on in the AD9852 digital frequency synthesis system design and the realization. 本文介紹了DDS的基本原理以及DDS芯片AD9852的結構、特點(diǎn),并給出了基于A(yíng)D9852的數字頻率合成系統中的設計與實(shí)現。
- We took an indirect route to the town. 我們循一條迂回曲折的通路去鎮上。
- The Research on Indirect Frequency Synthesizer of Low Phase Noise Digit PLL 低相噪數字鎖相間接頻率合成器的研究
- Disease transmission by direct or indirect contact. 接觸傳染通過(guò)直接或間接接觸來(lái)傳播的疾病
- The basic principle of using phase locked loop technique to realize the design and analysis of program controlled frequency syntheses was introduced. 本文簡(jiǎn)要地敘述了應用鎖相環(huán)路實(shí)現信號合成的基本原理。
- The taxi driver took an indirect route to avoid the town centre. 為了避免經(jīng)過(guò)市中心，出租車(chē)司機繞道而行。
