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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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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