Getting around that issue used to require a splitter and second mixer just for recording.

游览用来记录所需要的只是一个和第二混频器，分配器问题。

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Second , the noise of double balanced mixer was analyzed, which involved analysis of low frequency flicker noise and high frequency thermal noise.

接着对双平衡混频器的噪声进行理论分析，包括低频闪烁噪声和高频热噪声。

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We computed the input impedance of mixer with the first method, and we also discussed the effect of the convergent parameter on improving the convergence with the second method.

用第一种方法求出了混频器的输入阻抗，用第二种方法讨论了收敛参量对改进收敛性的影响。

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