National Tsing Hua University Institutional Repository:Piecewise-linear phase frequency detector for fast-lock phaselocked loops
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    National Tsing Hua University Institutional Repository > 電機資訊學院 > 電機工程學系 > 會議論文  >  Piecewise-linear phase frequency detector for fast-lock phaselocked loops


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    题名: Piecewise-linear phase frequency detector for fast-lock phaselocked loops
    作者: Jen-Chieh Chih;Ching-Te Chiu;Jen-Ming Wu;Shuo-Hung Hsu;Yar-Sun Hsu
    教師: 吳仁銘
    日期: 2011
    出版者: Institute of Electrical and Electronics Engineers
    關聯: Circuits and Systems (MWSCAS), 2011 IEEE 54th International Midwest Symposium on, Seoul, Pages 1-4
    关键词: fast-lock
    Piecewise-linear
    摘要: In this paper, a new structure of the nonlinear PFD is proposed to achieve fast lock as well as small output jitter. The proposed Piecewise-Linear PFD has more flexibility than previous designs, since the lock time and the output jitter of the PLL are no longer tradeoffs. When the phase difference of the reference and the feedback signal is larger than π, additional charging or discharging current is injected to the loop filter (LF) to accelerate the lock process. On the other hand, to keep the jitter small, the Piecewise-Linear PFD acts just like the conventional linear PFD while approaching lock. The post-simulation results show that a speedup of 68% can be achieved with comparison to the conventional PLL. Moreover, the jitter is almost the same. The output frequency of the PLL is up to 2.5GHz.
    相関连結: http://www.ieee.org/
    URI: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/83686
    显示于类别:[電機工程學系] 會議論文
    [積體電路設計技術研發中心] 會議論文
    [通訊工程研究所] 會議論文

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