In chapter three, after presenting the working principle of mixer and image-reject mixer, some problems which should be paid attention to during the mixer design are discussed.

第三章介绍了微波混频器及镜频抑制混频器的工作原理，讨论了设计微波镜频抑制混频器中应该注意的一些问题。

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Abstract: This paper analyzes the Chinese domestic and foreign vertical egg machine status, to design a new type mixer.

摘要：本文分析了中国国内外立式打蛋机的现状，设计出一新型立式打蛋机。

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A design method of mm wave mixer with double ridged waveguide used as signal port has been presented.

该文介绍用双脊波导作信号端制作毫米波宽频带混频器的设计方法。

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