The main structure of the mixer adopts two symmetrical single-balanced mixers, with phase-shifting of the up and down path signals to eliminate the image frequency.
混频器主结构采用两只对称的单平衡混频器组合，通过上下两路信号移相来达到消除镜频的目的。
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Meanwhile, combining these two ideas, we propose a new kind of single-source shortest path algorithm based on bucket structure, which has good time complexity and parallelism property.