From the noise figure formula of the cascade system, we know that NF of the waveguide-to-microstrip transiton affects the NF of the whole system most.
由级联系统的噪声系数公式可知,系统的第一级对噪声系数的影响最大,在本方案中波导-探针-微带过渡对整个接收前端系统的噪声系数影响最大,所以设计出结构简单、损耗低的波导-探针-微带过渡显得尤为重要。
参考来源 - 毫米波低噪声三通道接收机前端的研制·2,447,543篇论文数据,部分数据来源于NoteExpress
In this paper, a digital cascade system setting parameters computer algorithm based on the enlarge frequency method is given.
给出了一个以扩充频率法为基础的数字串级系统参数整定的计算机算法。
The results show that the proposed cascade system improves the performance gain by 2 to 6 dB compared to traditional BICM system.
结果证明,该文级联系统取得高出一般位交织编码调制系统2—6分贝的性能增益。
This method can be used to make the calculation easier and more accurate and give a mucll detailed description of the spatial structure of the cascade system.
使设计计算结果更精确。 该方法简单易行,可对叶栅系统的空间结构进行更加详细的描述。
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