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      A synchronised Direct Digital Synthesiser

      Payne, Andrew D.; Carnegie, Dale A.; Dorrington, Adrian A.; Cree, Michael J.
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      A synchronised direct digital synthesiser.pdf
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       www-ist.massey.ac.nz
      Citation
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      Payne, A. D., Carnegie, D. A., Dorrington, A. A. & Cree, M. J. (2005). A synchronised Direct Digital Synthesiser. In G. Sen Gupta, S.C. Mukhopadhyay, C.H. Messom (ed/s) Proceedings of the First International Conference on Sensing Technology. First International Conference on Sensing Technology. New Zealand, Massey University, Massey University, Palmerston North, 21-23 November, 2005 (pp. 174-179).
      Permanent Research Commons link: https://hdl.handle.net/10289/2920
      Abstract
      We describe a Direct Digital Synthesiser (DDS) which provides three frequency-locked synchronised outputs to generate frequencies from DC to 160 MHz. Primarily designed for use in a heterodyning range imaging system, the flexibility of the design allows its use in a number of other applications which require any number of stable, synchronised high frequency outputs. Frequency tuning of 32 bit length provides 0.1 Hz resolution when operating at the maximum clock rate of 400 MSPS, while 14 bit phase tuning provides 0.4 mrad resolution. The DDS technique provides very high relative accuracy between outputs, while the onboard oscillator’s stability of ±1 ppm adds absolute accuracy to the design.
      Date
      2005
      Type
      Conference Contribution
      Publisher
      Massey University
      Rights
      This paper has been published in the Proceedings of the First International Conference on Sensing Technology. New Zealand, Massey University, Massey University, Palmerston North, 21-23 November, 2005. Used with permission.
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      • Science and Engineering Papers [3122]
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