Abstract：The principle of pseudo interleaving of multiple DDSs and spectrum expressions with ideal parameters are analyzed.The model of pseudo interleaving of multiple DDSs with phase truncation is established.Based on the model,the distribution and amplitude of spur caused by phase truncation are discussed and analyzed.Then some important conclusions are drawn and proved by simulation,which can provide theoretical supports for spurious performance evaluation and parameter selection in design signal source or clock generator based on pseudo interleaving technique.
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2011, Vol. 32 
