A 2.5-GHz Direct Digital Frequency Synthesizer with spurious noise cancellation

DOI Web Site 被引用文献2件 参考文献9件
  • Jun-an Zhang
    Collage of Communication and Information Engineering, University of Electronic Science and Technology of China Key Laboratory of Analog Integrated Circuit
  • Guang-jun Li
    Collage of Communication and Information Engineering, University of Electronic Science and Technology of China
  • Rui-tao Zhang
    Key Laboratory of Analog Integrated Circuit
  • Jiao-xue Li
    Key Laboratory of Analog Integrated Circuit
  • Ya-feng Wei
    Key Laboratory of Analog Integrated Circuit
  • Bo Yan
    Collage of Communication and Information Engineering, University of Electronic Science and Technology of China
  • Ru-zhang Li
    Key Laboratory of Analog Integrated Circuit

抄録

A 2.5 GHz Direct Digital Frequency Synthesizer (DDS) with spurious noise cancellation is presented. Seven auxiliary DDSs have been used as spur cancellers which can generate opposition signal to counteract the spurs in DDS’s output spectrum. Principle of spur cancellation and its implementation scheme is discussed. Key steps of spur cancellation procedure are also described. This DDS is implemented in a 0.18 µm CMOS technology, occupies 4.6 mm × 4.2 mm including bond pads. Measured performance is SFDR > 58 dB for output signal frequencies up to 1 GHz, more than 20 dB’s improvement is achieved comparing to its intrinsic SFDR performance.

収録刊行物

  • IEICE Electronics Express

    IEICE Electronics Express 11 (14), 20140533-20140533, 2014

    一般社団法人 電子情報通信学会

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