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    題名: A ROM-Less Direct Digital Synthesizer Using Piecewise Linear Approximation
    作者: Chen, Hsin-Chuan;Chiang, Jen-Shiun;Kuo, Chung-Yu
    貢獻者: 淡江大學電機工程學系
    關鍵詞: 頻率合成器;分段式線性趨近;相位顫動;Frequency Synthesizer;Piecewise Linear Approximation;Phase Jitter
    日期: 2002-08
    上傳時間: 2014-02-13 11:17:22 (UTC+8)
    摘要: To achieve a low approximation error and to simplify the circuit implementation are two important issues in the design of the direct digital frequency synthesizers (DDS) using approximation approaches . In this paper, we propose a new hardware scheme using piecewise linear approximation method to realize a sine-output DDS, which only has about a 0.005 maximum approximation error. Neither ROM lookup table existed in the conventional DDS nor small correcting data ROM used for the DDS with initial guess/correction methods is required. Furthermore, by modifying the behavior of the conventional phase accumulator, the proposed DDS also provides the flexibility for tuning frequency and a reduction of phase jitter.
    關聯: 2002年超大型積體電路設計暨計算機輔助設計技術研討會論文集=Proceedings of of the 2002 VLSI Design/CAD Symposium,頁496-499
    顯示於類別:[電機工程學系暨研究所] 會議論文

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